Management Software ® AT-S25 ◆ User’s Guide AT-8316F/MT, AT-8316F/VF, AT-8316F/SC, AND AT-8324 FAST ETHERNET SWITCHES VERSION 2.0.
Copyright © 2003 Allied Telesyn, Inc. 960 Stewart Drive Suite B, Sunnyvale, CA 94085 USA All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn, Inc. Microsoft is a registered trademark of Microsoft Corporation, Netscape Navigator is a registered trademark of Netscape Communications Corporation.
Table of Contents List of Figures ........................................................................................................................................................................................................ 8 List of Tables ........................................................................................................................................................................................................11 Preface ................................................
Table of Contents Telnet Management Session ........................................................................................................................................................................... 38 Starting a Telnet Management Interface ........................................................................................................................................... 38 Quitting from a Telnet Management Interface...................................................................
AT-S25 Management Software User’s Guide Enabling or Disabling STP or RSTP .............................................................................................................................................................. 101 STP and RSTP Parameters .............................................................................................................................................................................. 102 Configuring STP .......................................................
Table of Contents Chapter 11 Class of Service .................................................................................................................................................................................................161 Class of Service Overview ...............................................................................................................................................................................162 Configuring CoS ...............................................
AT-S25 Management Software User’s Guide Chapter 19 Port Trunks ........................................................................................................................................................................................................ 216 Creating a Port Trunk ....................................................................................................................................................................................... 217 Modifying a Port Trunk ..........
List of Figures Figure 1: Figure 2: Figure 3: Figure 4: Figure 5: Figure 6: Figure 7: Figure 8: Figure 9: Figure 10: Figure 11: Figure 12: Figure 13: Figure 14: Figure 15: Figure 16: Figure 17: Figure 18: Figure 19: Figure 20: Figure 21: Figure 22: Figure 23: Figure 24: Figure 25: Figure 26: Figure 27: Figure 28: Figure 29: Figure 30: Figure 31: Figure 32: Figure 33: Figure 34: Figure 35: Figure 36: Figure 37: Figure 38: System Booting Window ...............................................................
AT-S25 Management Software User’s Guide Figure 39: Figure 40: Figure 41: Figure 42: Figure 43: Figure 44: Figure 45: Figure 46: Figure 47: Figure 48: Figure 49: Figure 50: Figure 51: Figure 52: Figure 53: Figure 54: Figure 55: Figure 56: Figure 57: Figure 58: Figure 59: Figure 60: Figure 61: Figure 62: Figure 63: Figure 64: Figure 65: Figure 66: Figure 67: Figure 68: Figure 69: Figure 70: Figure 71: Figure 72: Figure 73: Figure 74: Figure 75: Figure 76: Figure 77: Figure 78: Figure 79: Figure 80: Figure 81
List of Figures Figure 94: Figure 95: Figure 96: Figure 97: Figure 98: Figure 99: Figure 100: Figure 101: Figure 102: Figure 103: Figure 104: Figure 105: Figure 106: Figure 107: Figure 108: Figure 109: Figure 110: Figure 111: Figure 112: Figure 113: Figure 114: Figure 115: Figure 116: STP Settings Window .............................................................................................................................................................. 234 Monitoring - Spanning Tree Window .......
List of Tables Table 1: Table 2: Table 3: Table 4: Table 5: Table 6: Table 7: Table 8: Table 9: Table 10: Table 11: Table 12: Table 13: Table 14: Table 15: Table 16: Table 17: Table 18: Table 19: Table 20: Table 21: Table 22: Table 23: Table 24: Table 25: Table 26: Table 27: Basic Switch Parameters 43 Port Configuration Parameters 61 Port Status Parameters 65 Trunked Ports on 10/100 Mbps and 100 Mbps Expansion Modules 81 Port Mirroring Parameters 90 Bridge Priority Value Increments 94 Auto-Detect Port Cos
Preface This guide contains instructions on how to configure an AT-8300 Series switch or AT-8300 Series stack using the AT-S25 management software.
AT-S25 Management Software User’s Guide How This Guide is Organized This manual is divided into three sections. Section I: Overview This section contains just one chapter. It reviews the different ways that you could access the AT-S25 management software on a switch. Section II: Local and Telnet Management The chapters in this section explain how to manage an AT-8300 Series stack from a local management interface or a Telnet management interface.
Preface Document Conventions This document uses the following conventions: Note Notes provide additional information. Warning Warnings inform you that performing or omitting a specific action may result in bodily injury. Caution Cautions inform you that performing or omitting a specific action may result in equipment damage or loss of data.
AT-S25 Management Software User’s Guide Contacting Allied Telesyn This section provides Allied Telesyn contact information for technical support as well as sales or corporate information. Online Support E-mail and Telephone Support For Sales or Corporate Information You can request technical support online by accessing the Allied Telesyn Knowledge Base from the following web site: http://kb.alliedtelesyn.com.
Preface Where to Find Web-based Guides The installation and user guides for all Allied Telesyn products are available in Portable Document Format (PDF) on our web site at http://www.alliedtelesyn.com. You could view the documents on-line or download them onto a local workstation or server. Obtaining Management Software Updates New releases of management software for our managed products can be downloaded from the Allied Telesyn web site: http://www.alliedtelesyn.com.
AT-S25 Management Software User’s Guide Upgrading AT-S25 Version 1.5.6.2 or Earlier to Version 2.0.2 or Later This section contains the procedures for upgrading an image file to AT-S25 Version 2.0.2 or later. Caution The configuration file in the AT-S25 Version 1.5.6.2 or earlier version is not compatible with the AT-S25 Version 2.0.2 or later versions of code; therefore, the user needs to save the configuration settings such as the static MAC addresses, VLAN settings, port configuration settings, etc.
Preface TFTP Guidelines In the legacy code of AT-S25 Version 1.5.6.2 or an earlier version and Version 1.5.6.3, the TFTP server software runs on the switch, so the user has to use the Put command of the TFTP client software on a PC to download an image file to the switch. However, AT-S25 Version 2.0.2 and after is designed to use the TFTP client software on the switch. As a result, the user must run TFTP server on the PC to download the image file to the switch when Version 2.0.
AT-S25 Management Software User’s Guide Using TFTP to Download the AT-S25 Version 2.0.2 Image File to the Master Switch of the Stack In a network consisting of several AT-8316F or AT-8324 switches, you could simplify the upgrade procedure with the two-step process below: ❑ First, download Version 1.5.6.3 image file “ATS25_V1563.IMG” to the Master switch of the stack. ❑ Secondly, download Version 2.0.2 image file “ATS25_V202.IMG” to the Master switch of the stack.
Preface Note The ATS25_V1563.IMG file is not required when using the XModem method. To download the AT-S25 Version 2.0.2 image file “ATS25_V202.IMG” using the XModem method, perform the following procedure: 1. In HyperTerminal, verify that your current port settings are set as follows: - Bits per second = “9600” - Data bits = “8” - Parity = “None” - Stop bits = “1” - Flow control = “None” 2. Start the AT-S25 management software. The System Booting window as shown in Figure 1 is running.
AT-S25 Management Software User’s Guide 3. Immediately hit any key to run the system diagnostics. The ATI Diagnostics menu in Figure 2 is displayed. Figure 2 ATI Diagnostics Menu Note The current terminal speed is 9600 baud. For faster transfer, select the highest speed available. 4. Type Z to change the terminal speed. 5. Type 5 to select the new speed at 115200. 6. From the local management interface menu, select Disconnect from the Call menu or click the Disconnect icon .
Preface 7. From the local management interface menu bar, select Properties from the File menu or click the Properties icon . The AT-S25 Properties window in Figure 3 is displayed. Figure 3 AT-S25 Properties Window 8. Click the Configure button. The Properties window of the connecting COM in Figure 4 is displayed. Figure 4 COM1 Properties Window 9. From the Bits per second pull-down list, select 115200; and click OK. You are returned to the AT-S25 Properties. 10. In the AT-S25 Properties window, click OK.
AT-S25 Management Software User’s Guide 11. From the local management interface menu, select Connect from the Call menu or click the Call icon . 12. In the HyperTerminal window, hit any key to activate the ATI Diagnostics menu. 13. In the ATI Diagnostics menu, type X to select XMODEM download updated System Software, and press the Enter key. The following prompt is displaying, indicating that the system is ready for the download: The System is now ready for download. Please start your XMODEM transfer. 14.
Preface The software immediately begins to download onto the switch. The Xmodem File Send window in Figure 7 displays current status of the software download. The download process take a couple minutes to complete. Figure 7 XModem File Send Window Once the download process is completed, the following prompt is displayed: XMODEM transfer has successfully completed. Now writing to Flash PROM. Please wait for FLASH writes to complete. This may take up to 1 minute. Do not reset, do not remove power.
Section I Overview The chapter in this section provides a brief overview of the AT-S25 management software. It explains some of the functions that you could perform with the management software and reviews the different methods for accessing the AT-S25 software on an AT-8316F or an AT-8324 Fast Ethernet Switch.
Chapter 1 Overview The AT-S25 management software is intended for an AT-8300 Series stack of AT-8316F and AT-8324 Fast Ethernet Switches. The software is used to monitor and adjust a stack’s operating parameters.
AT-S25 Management Software User’s Guide Note The default settings for the management software can be found in Appendix A, AT-S25 Default Settings on page 272. To actively manage an AT-8300 Series stack, such as to change or adjust the operating parameters, you must access the switch’s AT-S25 management software. The AT-S25 software has a menu interface that makes it very easy to use. There are four different ways that you can access the AT-S25 management software.
Section I: Overview Local Management Session You establish a local management session with an AT-8300 Series stack by connecting a terminal or a PC with a terminal emulator program to the RS-232 Terminal port on the Master switch of the stack, using a straight-through RS-232 cable. This type of management interface is referred to as “local” because you must be physically close to the stack, such as in the wiring closet where the stack is located.
AT-S25 Management Software User’s Guide Telnet Management Session Any management workstation on your network that has the Telnet application protocol can be used to manage an AT-8300 Series stack. This type of management session is referred to in this guide as a remote management because you do not have to be in the wiring closet where the stack is located. You can manage a stack from any workstation on the network that has the application protocol.
Section I: Overview Web Browser Management Session You can also use a web browser to manage an AT-8300 Series stack. This too is referred to as remote management because you can manage a stack from any workstation on your network that has a web browser. Note For instructions on starting this type of management session, refer to Starting a Web Browser Interface on page 190.
AT-S25 Management Software User’s Guide SNMP Management Session Another way to remotely manage a AT-8300 Series stack is with an SNMP management program. A familiarity with Management Information Base (MIB) objects is necessary for this type of management. The AT-S25 software supports the following MIBs: ❑ SNMP MIB-II (RFC 1213) ❑ Bridge MIB (RFC 1493) ❑ Interface Group MIB (RFC 1573) ❑ Ethernet MIB (RFC 1643) ❑ Remote Network MIB (RFC 1757) ❑ Allied Telesyn Managed Switch MIB (atiStackSwitch.
Section I: Overview Management Access Levels An AT-8300 Series stack has two levels of management access. They are: ❑ Manager: When you log in as a Manager, you can view and configure all of a switch’s operating parameters. The username for Manager access is “manager” and the default password is “friend”. ❑ Operator: When you log in as an Operator, you can only view the operating parameters, but you cannot change values. The username for Operator access is “operator” and the default password is “operator”.
Section II Local and Telnet Management Sessions The chapters in this section explain how to manage an AT-8300 Series stack from a local or Telnet management session.
Chapter 2 Starting a Local or Telnet Management Session This chapter contains the procedure for starting a local or Telnet management session on an AT-8300 Series stack.
AT-S25 Management Software User’s Guide Local Management Session To start a local management session on an AT-8300 Series stack, you connect a terminal or personal computer with a terminal emulator program to the RS-232 Terminal Port on the Master switch in the stack, using a straight-through RS-232 cable. Once you have started the session, you will be able to manage all of the switches in the stack.
Section II: Local and Telnet Mangement Note Do not connect the terminal to the RS-232 port on a slave switch. To start a local management interface on a stack, you must connect the terminal to the RS-232 port on the master switch. 2. Connect the other end of the cable to an RS-232 port on a terminal or PC with a terminal emulator program. 3.
AT-S25 Management Software User’s Guide The Main Menu window is displayed in Figure 9. Figure 9 Main Menu To select a menu item, type the corresponding letter or number. Pressing the Esc key or typing the letter “R” in a submenu or window returns you to the previous menu. Quitting from a Local Interface To quit a local management interface, return to the Main Menu and type Q for Quit. Note You should always exit from a management session when you are finished managing a stack.
Section II: Local and Telnet Mangement Telnet Management Session You can use the Telnet application protocol from a workstation on your network to manage an AT-8300 Series stack. This type of management is referred to as remote management because you do not have to be physically close to the switch to start the interface, as with a local management session. Any workstation on your network that has the application protocol can be used to manage the switch.
AT-S25 Management Software User’s Guide The Main Menu of a Telnet management session is identical to the Main Menu of a local management session, shown in Figure 9 on page 37. You can perform nearly all the same functions from a Telnet management session as you can from a local management session. The menus also function the same. To make a selection, type its corresponding number or letter. To return to a previous menu, type R or press the Esc key.
Section II: Local and Telnet Mangement Selecting a Switch Module in the Stack Most of the procedures in this guide have you select the switch module in the stack on which you want to perform the procedure. For example, to display the status of the ports on the third switch module, you would perform the following procedure: 1. From the Main Menu, type M to select M - Select another module. The prompt message is displayed: Select Module ID: [1 to 8] -> 2.
Chapter 3 Basic Switch Parameters This chapter contains a variety of information and procedures. There is a discussion on when to assign an IP address to a switch and the different ways that you could go about it. There are also procedures for resetting the switch, activating the original switch default settings, and more.
Section II: Local and Telnet Mangement When Does a Switch Need an IP Address? If you want to remotely manage an AT-8300 Series stack, you must assign it an IP address. The IP address is assigned to the Master switch of the stack and is shared by all the switches in the stack. When you assign a stack an IP address, you must also assign it a subnet mask. The stack uses the subnet mask to determine which portion of an IP address represents the network address and which the node address.
AT-S25 Management Software User’s Guide The basic switch parameters can be found in the Administration Menu, as shown in Figure 10. Figure 10 Administration Menu Table 1 lists the basic switch parameters used in the Administration Menu. Table 1 Basic Switch Parameters PARAMETER DESCRIPTION 1 - IP Address This parameter specifies the IP address of the stack. You must specify an IP address if you intend to remotely manage the stack using a Telnet utility, an SNMP management program, or a Web browser.
Section II: Local and Telnet Mangement PARAMETER DESCRIPTION 5 - Administrator This parameter specifies the name of the network administrator responsible for managing the stack. The value range is 1 to 39 alphanumeric characters. This parameter is optional. 6 - Comments This parameter specifies additional information about the stack, such as its location (for example, 4th Floor wiring closet 402B). The value range is 1 to 39 alphanumeric characters. This parameter is optional.
AT-S25 Management Software User’s Guide Configuring an IP Address and Switch Name The procedure in this section explains how to manually assign an IP address, subnet mask, and gateway address to an AT-8300 Series stack from a local or Telnet management interface. (If you want the stack to obtain its IP configuration from a DHCP or BOOTP server on your network, go to the procedure Activating the BOOTP and DHCP Services on page 46.
Section II: Local and Telnet Mangement Activating the BOOTP and DHCP Services The BOOTP and DHCP application protocols were developed to simplify network management. They are used to automatically assign IP configuration information to the devices on your network, such as an IP address, subnet mask, and a default gateway address. An AT-8300 Series switch supports these protocols and can obtain its IP configuration information from a BOOTP or DHCP server on your network.
AT-S25 Management Software User’s Guide For information on this parameter setting, refer to Table 1 on page 43. Note If you activated BOOTP/DHCP, the switch immediately begins to query the network for a BOOTP or DHCP server. The switch will continue to query the network for its IP configuration until it receives a response.
Section II: Local and Telnet Mangement Resetting a Stack To reset a stack, perform the following procedure: 1. From the Main Menu, type 4 to select Administration Menu. The Administration Menu as shown in Figure 10 on page 43 is displayed. 2. From the Administration Menu, type 9 to select Reset Switch. The following prompt is displayed: Do you want to proceed with the switch reboot? [Yes/No] -> 3. Type Y to reset the switch or N to cancel this procedure.
AT-S25 Management Software User’s Guide Pinging a Remote System You could instruct the switch to ping a remote device on your network. This procedure is useful in determining whether a valid link exists between the switch and another device. To ping a network device, perform the following procedure: 1. From the Main Menu, type 4 to select Administration Menu. The Administration Menu as shown in Figure 10 on page 43 is displayed. 2. From the Administration Menu, type P to select Ping a Remote System.
Section II: Local and Telnet Mangement Configuring the AT-S25 Software Security Features The AT-S25 software has several security features that can help prevent unauthorized individuals from changing the parameter settings of an AT-8300 Series stack. The security features are: Manager and Operator Passwords - The management software has two standard, management login accounts: ❑ For Manager access, type manager as the user name. The default password is “friend”.
AT-S25 Management Software User’s Guide Configuring the Management Passwords There are two levels of management access on an AT-8300 Series stack: Manager and Operator. When you log in as a Manager, you can view and configure all of a stack’s operating parameters. When you log in as an Operator, you can only view the operating parameters; you cannot change any values. You log in as a Manager or an Operator by entering the appropriate password when you start an AT-S25 management software.
Section II: Local and Telnet Mangement 6. When prompted, re-enter the new Manager or Operator password. For information on these parameters, refer to Table 1 on page 43. Note The password can be from 0 to 15 alphanumeric characters. The passwords are case sensitive. Caution You should not use spaces or special characters, such as asterisks (*) and exclamation points (!), in a password if you will be managing the stack from a web browser. Many web browsers cannot handle special characters in passwords.
AT-S25 Management Software User’s Guide 3. To configure SNMP access, type 3 to select SNMP Access. When prompted, type E to enable SNMP management access or D to disable it. By default, SNMP Access is Disabled. With the SNMP Access disabled, no one will be able to manage the stack remotely using an SNMP management program. 4. To configure web browser access, type 4 to select Web Server Access. When prompted, type E to enable web access or D to disable web access. By default, Web Server Access is Enabled.
Section II: Local and Telnet Mangement Configuring SNMP Community Strings and Trap IP Addresses To configure the SNMP community strings for the switch and to assign up to four IP addresses of management stations to receive traps from the switch, perform the following procedure: 1. From the Main Menu, type 5 to select System Config Menu. The System Config Menu as shown in Figure 12 on page 52 is displayed. 2. From the System Config Menu, type A to select Advanced Configuration.
AT-S25 Management Software User’s Guide 3. From the Advanced Configuration window, type 2 to select SNMP Configuration. The SNMP Configuration menu in Figure 14 is displayed. Figure 14 SNMP Configuration Menu 4. Enter or modify the parameters as desired. To change a value, type its corresponding number and, when prompted, enter the new value.
Section II: Local and Telnet Mangement Returning the AT-S25 Software to the Factory Default Values The procedure in this section returns all AT-S25 software parameters to their default values. This procedure also deletes any VLANs that you have created on the switch. Note The AT-S25 software default values can be found in Appendix A, AT-S25 Default Settings on page 272. To return the AT-S25 management software to its default settings, perform the following procedure: 1.
AT-S25 Management Software User’s Guide Caution If the switch is being managed remotely and its configuration has DHCP Enabled, this parameter will be set to Disabled after resetting the switch to Factory Defaults. This action will result in the loss of management until either the IP address is manually set or DHCP is enabled again via the serial port.
Section II: Local and Telnet Mangement Viewing the AT-S25 Version Number and Basic Switch Information The procedure in this section displays the following switch information: ❑ AT-S25 Version Number ❑ Application Software Version ❑ Application Software Build Date ❑ MAC Address ❑ Stack Info Menu 1. To display the information, type 8 to select Diagnostics Menu from the Main Menu. The Diagnostics Menu window in Figure 15 is displayed. Figure 15 Diagnostics Menu 2.
Chapter 4 Port Parameters The chapter contains the procedures for viewing and changing the parameter settings for the individual ports on a switch.
Section II: Local and Telnet Mangement Configuring Port Parameters To configure the parameter settings for a port on a switch, perform the following procedure: 1. From the Main Menu, type 1 to select Ports Menu. 2. From the Ports Menu, type M if you wish to select a module other than the one currently displayed. The prompt message is displayed: Select Module ID: [1 to 8] -> 3. Enter the ID of the module you wish to select, and press the Enter key. 4.
AT-S25 Management Software User’s Guide The Port Configuration menu in Figure 16 is displayed. Figure 16 Example of Port Configuration Menu Note The example Port Configuration window in the figure above is for a 10/100 Mbps twisted pair port. The window for a fiber optic port will contain a subset of the parameters. 7. Enter or modify the parameters in the window as desired. Changes to the parameters take effect immediately on the switch.
Section II: Local and Telnet Mangement PARAMETER 3 - Negotiation DESCRIPTION Configures a port for Auto-Negotiation or to manually set a port’s speed and duplex mode. Settings for this parameter are: • Auto: Sets a port’s speed and duplex mode automatically. (default) • Manual: Set a port’s speed and duplex mode manually. If you select Auto, the switch will set both speed and duplex mode for the port automatically. If you select Manual, two additional selections are displayed in the window: 4 - Duplex ...
AT-S25 Management Software User’s Guide PARAMETER B - Back Pressure DESCRIPTION Sets back pressure on the port. This parameter only applies to ports that are operating in half-duplex mode. A port operating with back pressure transmits a JAM pattern to halt the transmission of packets from the end node when the port’s buffer is full and it cannot receive any more packets. Possible settings for this parameter are: • Disable (default) • Enable 8.
Section II: Local and Telnet Mangement Displaying Port Status To display the status of the ports on the switch, perform the following procedure: 1. From the Main Menu, type 1 to select Ports Menu. The Ports Menu in Figure 17 is displayed. Figure 17 Ports Menu 2. From the Ports Menu window, type M if you want to select a module in the stack other than the one currently displayed. The following prompt is displayed: Select Module ID: [1 to 8] -> 3.
AT-S25 Management Software User’s Guide The Port Status window is displayed. Figure 18 is an example of the window. Figure 18 Port Status Window Table 3 lists the parameters appeared in the Port Configuration window. These parameters are for viewing purposes only. Table 3 Port Status Parameters PARAMETER DESCRIPTION PortName/ UplinkType The name of the port or, in the case of an optional uplink port, the uplink model (AT-A14, AT-A15, AT-A17, AT-A18, or AT-A19). State The current state of the port.
Section II: Local and Telnet Mangement PARAMETER Link DESCRIPTION The status of the link between the port and the end node connected to the port. Possible settings for this parameter are: • Up - indicates that a valid link exists between the port and the end node. • Down - indicates that the port and the end node have not established a valid link. Speed The operating speed of the port.
Chapter 5 Port Security This chapter contains the procedures for setting port security. The sections in this chapter include: ❑ Port Security Overview on page 68 ❑ Configuring Limited Security Level on page 72 ❑ Activating a Port Security Level on page 75 Note You can set port security only from a local management session. You cannot set it from a Telnet management session.
Section II: Local and Telnet Mangement Port Security Overview The port security feature can enhance the security of your network. You can use the feature to control which network devices can forward frames through the stack. There are four levels of port security. Only one security level can be active on an AT-8300 Series stack at a time. The security levels are: ❑ Automatic ❑ Limited ❑ Secure ❑ Lock All Ports Note Only one security level can be active on a stack at a time.
AT-S25 Management Software User’s Guide ❑ The MAC address aging time is disabled under this security level. Once a dynamic MAC address has been learned on a port and added to a MAC Address Table, it remains in the table and is not purged unless one member of the group experiences a link down condition or the switch is power cycled. ❑ Static MAC addresses are retained and are not included in the count of maximum addresses that can be learned by a port group.
Section II: Local and Telnet Mangement The AT-8316F/SC switch also has four groups, as shown in Figure 21.
AT-S25 Management Software User’s Guide Lock All Ports This security level causes the stack to stop learning new dynamic MAC addresses. The stack forwards frames based on the dynamic MAC addresses that it has already learned and any static MAC addresses that the network administrator has entered. You can add more static MAC addresses once this security level is activated.
Section II: Local and Telnet Mangement Configuring Limited Security Level Perform the following procedure if you intend to activate the Limited security level on the stack. This procedure explains how to set the maximum number of MAC addresses the port groups can learn. (The default is 100.) You must set these values before you activate Limited security level.
AT-S25 Management Software User’s Guide The Port Security Limited-Mode menu in Figure 23 is displayed. Figure 23 Port Security Limited-Mode Menu 4. From the Port Security Limited-Mode menu, type M if you want to configure the Limited security level on a switch other than the one currently managing. The prompt message is displayed: Select Module ID: [1 to 8] -> 5. Enter the ID of the module you want to select, and press the Enter key. 6.
Section II: Local and Telnet Mangement 10. Type 1 to select Display MAC Threshold. The current MAC address limits for the port groups are displayed. 11. Examine the MAC limits. Check to be sure that they are correct. If you assigned different values to different port groups, be sure that the different values apply to the correct groups. If necessary, repeat this procedure to change any MAC address limits. 12. Type S to select Save Configuration Changes. 13.
AT-S25 Management Software User’s Guide Activating a Port Security Level The following procedure explains how to activate a port security level on a stack. Note Before activating the Limited security level, configure the maximum number of MAC addresses each port group can learn. For instructions, refer to Configuring Limited Security Level on page 72. Note This procedure can only be performed from a local management session. You cannot perform it from a Telnet management session.
Section II: Local and Telnet Mangement 3. From the Port Security menu, type 1 to select Port Security Mode: Automatic. The following prompt is displayed: Enter new mode (A-Automatic, L-Limited, S-Secured, K-locKed) : 4. Select the desired security level by typing the appropriate letter. For a description of the security levels, refer to Port Security Overview on page 68. A change to the security level is immediately activated on a stack. 5. Type S to select Save Configuration Changes.
Chapter 6 Port Trunking This chapter contains the procedures for creating and deleting port trunks.
Section II: Local and Telnet Mangement Port Trunking Overview Port trunking is an economical way for you to increase the bandwidth between two switches. A port trunk is a group of 2 to 8 ports that have been grouped together to function as one logical path. A port trunk increases the bandwidth between switches and is useful in situations where a single physical data link between switches is insufficient to handle the traffic load.
AT-S25 Management Software User’s Guide Using Ports from the Same Group The ports on the AT-8300 Series switch are divided into groups. When selecting ports for a trunk, the selected ports must be members of the same group. The AT-8324 Switch has five groups, as illustrated in Figure 26.
Section II: Local and Telnet Mangement As an example of a port trunk on an AT-8324 Switch, you could use Ports 4 and 5 as one port trunk, since the ports are members of the same group. However, you could not use Ports 7, 8, 9, and 10 because they belong to different groups. Creating Only One Trunk Per Group Each port group can support one port trunk.
AT-S25 Management Software User’s Guide Creating Port Trunks on 10/100 Mbps and 100 Mbps Expansion Modules The ports on an expansion card that contains two or more 10/100 Mbps or 100 Mbps twisted pair or fiber optic ports can be grouped together to form a port trunk, as shown in Table 4. Table 4 Trunked Ports on 10/100 Mbps and 100 Mbps Expansion Modules Number of Ports on Expansion Module Port Trunks 1 Does not support port trunking. 2 One port trunk consisting of two ports.
Section II: Local and Telnet Mangement Creating a Port Trunk This section contains the procedure for creating a port trunk on the switch. Be sure to review the guidelines in Port Trunking Overview on page 78 before performing the procedure. Caution Do not connect the cables to the ports in a port trunk until after you have configured the trunk with the management software.
AT-S25 Management Software User’s Guide 5. From the Port Trunking menu, type 1 to select Create 10/100 Trunk. The prompt similar to the following is displayed. Enter Trunk Number -> [1 to 5] -> 6. Enter the port group containing the ports to be in the trunk and press the Enter key. (For port groupings, refer to Using Ports from the Same Group on page 79.) The following prompt appears: Enter Trunk Name -> 7. Enter a name for the trunk and press the Enter key.
Section II: Local and Telnet Mangement 7. Type S to select Save Configuration Changes. 8. Configure the ports on the remote switch for port trunking. 9. Connect the cables to the ports of the trunk on the switch. The port trunk is ready for network operation. A prompt similar to the following appears: Enter trunk ports [1 - 8] -> Enter Trunk Number -> [1 to 2] -> 10. Enter the ports that will constitute the port trunk; then press the Enter key. You can specify the ports individually (e.g.
AT-S25 Management Software User’s Guide Modifying a Port Trunk To add or remove ports from a 10/100 Mbps port trunk, perform the following procedure: 1. From the Main Menu, type 1 to select Ports Menu. 2. From the Ports Menu, type 3 to select Port Trunking. The Port Trunking menu in Figure 29 on page 82 is displayed. 3. To modify a port trunk on a switch other than the one currently selected, type M. The following prompt is displayed: Select Module ID: [1 to 8] -> 4.
Section II: Local and Telnet Mangement Modifying a Trunk Name To modify the name of a port trunk, perform the following procedure: 1. From the Main Menu, type 1 to select Ports Menu. 2. From the Ports Menu, type 3 to select Port Trunking. The Port Trunking menu in Figure 29 on page 82 is displayed. 3. To modify a port trunk on a module other than the one currently selected, type M. The following prompt is displayed: Select Module ID: [1 to 8] -> 4.
AT-S25 Management Software User’s Guide Deleting a Port Trunk Caution Disconnect the cables from the port trunk on the switch before performing the following procedure. Deleting a port trunk without first disconnecting the cables can create loops in your network topology, which can result in broadcast storms and poor network performance. To delete a port trunk from the switch, perform the following procedure: 1. From the Main Menu, type 1 to select Ports Menu. 2.
Chapter 7 Port Mirroring This chapter contains the procedures on how to create a port mirror.
AT-S25 Management Software User’s Guide Port Mirroring Overview The port mirroring feature allows you to unobtrusively monitor the traffic being received and transmitted on a port on a switch by having the traffic copied to another switch port. You could connect a network analyzer to the port where the traffic is being copied and monitor the traffic on the other ports without impacting network performance or speed.
Section II: Local and Telnet Mangement Creating a Port Mirror To create a port mirror, perform the following procedure: 1. From the Main Menu, type 1 to select Ports Menu. 2. From the Ports Menu, type 2 to select Port Mirroring. The Port Mirroring menu in Figure 30 is displayed. Figure 30 Port Mirroring Menu 3. Type 1 to select Enable/Disable. The following prompt is displayed. Enter Enable (E)/Disable (D): 4. Type E to enable the port mirroring feature or D to disable the port mirroring feature.
AT-S25 Management Software User’s Guide PARAMETER DESCRIPTION 4 - Source Module Use this option to specify the switch in the stack containing the source port. 5 - Source Port Use this option to specify the source port. This is the port whose traffic will be copied to the destination port. You can specify only one port. 6. Configure the options in the menu as needed. Refer to the table above for option definitions. 7. Type S to select Save Configuration changes.
Chapter 8 STP and RSTP This chapter provides background information on the Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP). The chapter also contains procedures on how to adjust the STP and RSTP bridge and port parameters.
AT-S25 Management Software User’s Guide STP and RSTP Overview A significant danger to Ethernet network performance is the existence of a data loop in a network topology. A data loop exists when two or more nodes on a network can transmit data to each other over more than one data link. The problem that data loops pose is that data packets can become caught in repeating cycles, referred to as broadcast storms, that needlessly consume network bandwidth and significantly reduce network performance.
Section II: Local and Telnet Mangement Bridge Priority and the Root Bridge The first task that bridges perform when a spanning tree protocol is activated on a network is the selection of a root bridge. A root bridge distributes network topology information to the other network bridges and is used by the other bridges to determine if there are redundant paths in the network.
AT-S25 Management Software User’s Guide Path Costs and Port Costs Once the Root Bridge has been selected, the bridges must determine if the network contains redundant paths and, if one is found, they must select a preferred path while placing the redundant paths in a backup or blocking state.
Section II: Local and Telnet Mangement Port Priority If two paths have the same port cost, the bridges must select a preferred path. In some instances this can involve the use of the port priority parameter. This parameter can be used as a tie-breaker when two paths have the same cost. The port priority has a range of from 0 to 240. As with the bridge priority, this range is broken into increments, in this case multiples of 16.
AT-S25 Management Software User’s Guide To forestall the formation of temporarily data loops during topology changes, a port designated to change from blocking to forwarding passes through two additional states, listening and learning, before it begins to forward frames. The amount of time a port spends in these states is set by the forwarding delay value. This value states the amount of time that a port spends in the listening and learning states prior to changing to the forwarding state.
Section II: Local and Telnet Mangement Point-to-Point Ports and Edge Ports Note This section applies only to RSTP. Part of the task of configuring RSTP is defining the port types on the bridge. This relates to the device(s) connected to the port. With port type defined, RSTP can reconfigure a network much quicker than STP when a change in network topology is detected. There are two possible selections: Point-to-Point and Edge Port.
AT-S25 Management Software User’s Guide If a port is operating in half-duplex mode and is not connected to any further bridges participating in STP or RSTP, then the port is an edge port. Figure 32 illustrates an edge port on an AT-8324 Switch. The port is connected to an Ethernet hub, which in turn is connected to a series of Ethernet workstations. This is an edge port because it is connected to a device operating at half-duplex mode and there are no participating STP or RSTP devices connected to it.
Section II: Local and Telnet Mangement Mixed STP and RSTP Networks RSTP IEEE 802.1w is fully compliant with STP IEEE 802.1d. Your network can consist of bridges running both protocols. STP and RSTP in the same network should be able to operate together to create a single spanning tree domain. There is no reason not to activate RSTP on an AT-8316F or an AT-8324 Switch even when all other switches are running STP. The AT-8316F or AT-8324 Switch can combine its RSTP with the STP of the other switches.
AT-S25 Management Software User’s Guide Enabling or Disabling STP or RSTP To enable or disable a spanning tree protocol (STP) or a rapid spanning tree protocol (RSTP), perform the following procedure: 1. From the Main Menu, type 3 to select Spanning Tree Menu. The Spanning Tree Menu in Figure 35 is displayed. Figure 35 Spanning Tree Menu 2. To select the spanning tree protocol version, type 2 to select STP or RSTP as Active Protocol Version.
Section II: Local and Telnet Mangement STP and RSTP Parameters Since both STP and RSTP are sharing the same parameters; instead of having them listed by sections in this chapter, they are now listed in the Table 9 below: Note Any changes made to the common parameters will be take effect on both protocols such as: Bridge Priority, Bridge Hello Time,….
AT-S25 Management Software User’s Guide Table 9 STP and RSTP Parameters PARAMETER DESCRIPTION Bridge Max Age The length of time after which stored bridge protocol data units (BPDUs) are deleted by the bridge. All bridges in a bridged LAN use this aging time to test the age of stored configuration messages called BPDUs. For example, if you use the default 20, all bridges delete current configuration messages after 20 seconds. This parameter can be from 6 to 40 seconds. The default is 20 seconds.
Section II: Local and Telnet Mangement Table 9 STP and RSTP Parameters PARAMETER DESCRIPTION Edge Port This parameter defines whether the port is functioning as an edge port. This parameter only applies to RSTP. For an explanation of this parameter, refer to Point-to-Point Ports and Edge Ports on page 98. Port The port number. State The current state of the selected port. Role The current role of the selected port.
AT-S25 Management Software User’s Guide Configuring STP This section contains the following procedures: ❑ Configuring a Bridge’s STP Settings on page 105 ❑ Configuring a Port’s STP Settings on page 107 Configuring a Bridge’s STP Settings This section contains the procedure for configuring a bridge’s STP settings. Caution The default STP parameters are adequate for most networks. Changing them without prior experience and an understanding of how STP works might have a negative effect on your network.
Section II: Local and Telnet Mangement 5. Enter or modify the bridge STP settings as desired. For description of the parameters displayed in this window, refer to Table 9, STP and RSTP Parameters on page 102. 6. After adjusting the parameters, type S to select Save Configuration changes. Changes to the parameters take effect immediately on the switch. Note The aging time for BPDUs is different from the aging time used by the MAC address table. 7.
AT-S25 Management Software User’s Guide Configuring a Port’s STP Settings To adjust a port’s STP parameters, perform the following procedure: 1. From the Spanning Tree Menu, type 2 to select Active Protocol Version. The following prompt is displayed: Enter new value (S-STP, R-RSTP): 2. Type S to select STP. 3. Type 3 to select STP Configuration. The STP Menu in Figure 36 on page 105 is displayed. 4. From the STP Menu, type P to select STP Port Parameters.
Section II: Local and Telnet Mangement The following prompt is displayed: End Port to Configure [1 - 24] -> ❑ To configure just one port, enter the same port number here as you entered in the previous step. ❑ To configure a range of ports, enter the last port of the range. 9. Press the Enter key. The Configure STP Port Settings menu in Figure 38 is displayed. Figure 38 Configure STP Port Settings Menu 10. Enter or modify a port’s STP settings as desired.
AT-S25 Management Software User’s Guide Displaying Port’s STP Status and Setting To display a port’s STP status and settings, perform the following procedure: 1. From the Spanning Tree Menu, type 2 to select Active Protocol Version. The following prompt is displayed: Enter new value (S-STP, R-RSTP): 2. Type S to select STP. 3. Type 3 to select STP Configuration. The STP Menu in Figure 36 on page 105 is displayed. 4. From the STP Menu, type P to select STP Port Parameters.
Section II: Local and Telnet Mangement Configuring RSTP This section contains the following procedures: ❑ Configuring a Bridge’s RSTP Settings on page 110 ❑ Configuring a Port’s RSTP Settings on page 111 Configuring a Bridge’s RSTP Settings This section contains the procedure for configuring a bridge’s RSTP settings. Caution The default RSTP parameters are adequate for most networks.
AT-S25 Management Software User’s Guide 5. Enter or modify the parameters in the RSTP Menu window as desired. For description of the parameters displayed in this window, refer to Table 9, STP and RSTP Parameters on page 102. 6. After adjusting the parameters, type S to select Save Configuration changes. Changes to the parameters take effect immediately on the switch. Note The aging time for BPDUs is different from the aging time used by the MAC address table. 7.
Section II: Local and Telnet Mangement 6. From the RSTP Port Parameters window, type M if you wish to select a module other than the one currently displayed. The prompt message is displayed: Select Module ID: [1 to 8] -> 7. Enter the ID of the module you wish to select, and press the Enter key. 8. From the RSTP Port Parameters window, type 1 to select Configure RSTP Port Settings. The following prompt is displayed: Start Port to configure [1 - 24] -> 9. Enter the number of the port you wish to configure.
AT-S25 Management Software User’s Guide 11. Enter or modify the parameters in the window as desired. For description of the parameters displayed in this window, refer to Table 9, STP and RSTP Parameters on page 102. 12. After making your changes, type S to select Save Configuration changes. Note All changes to a port’s RSTP settings, with the exception of port cost, are activated immediately. A change to the port cost value requires you to reset the switch.
Section II: Local and Telnet Mangement Displaying Port’s RSTP Status and Settings Unlike the information displayed for STP, the RSTP status and settings information are listed separated in the AT-S25 software, under the following menus: ❑ Display RSTP Port Settings ❑ Display RSTP Port State Displaying a Port’s RSTP Settings To display a port’s RSTP settings, perform the following procedure: 1. From the Spanning Tree Menu, type 2 to select Active Protocol Version.
AT-S25 Management Software User’s Guide The Display RSTP Port Configuration window in Figure 39 is displayed. Figure 43 Display RSTP Port Configuration Window The parameters displayed in this window are for viewing purposes only. For description of the parameters, refer to Table 9, STP and RSTP Parameters on page 102. Displaying a Port’s RSTP Status To display a port’s RSTP status, perform the following procedure: 1. From the Spanning Tree Menu, type 2 to select Active Protocol Version.
Section II: Local and Telnet Mangement 7. In the RSTP Port Parameters window, type 3 to select Display RSTP Port State. The Display RSTP Port State window in Figure 44 is displayed. Figure 44 Display RSTP Port State Window The parameters displayed in this window are for viewing purposes only. For description of the parameters, refer to Table 9, STP and RSTP Parameters on page 102.
Chapter 9 Virtual LANs This chapter contains basic information about virtual LANs (VLANs). It also explains how to create, modify, and delete VLANs from a local or Telnet management session. This chapter also describes the Basic VLAN mode and how you could change a switch’s VLAN operating mode.
Section II: Local and Telnet Mangement VLAN Overview A VLAN is a group of ports on an Ethernet switch that form a logical Ethernet segment. The ports of a VLAN form an independent traffic domain where the traffic generated by the nodes of a VLAN remains within the VLAN. With VLANs, you could segment your network through the switch’s management software and so be able to group nodes with related functions into their own separate, logical LAN segments.
AT-S25 Management Software User’s Guide But with VLANs, you could change the LAN segment assignment of an end node connected to the switch through the switch’s ATS25 management software. VLAN memberships can be changed any time through the management software without moving the workstations physically, or having to change group memberships by moving cables from one switch port to another. Additionally, a virtual LAN can span more than one switch.
Section II: Local and Telnet Mangement Port-based VLAN Overview As explained in the VLAN Overview section earlier in this chapter, a VLAN consists of a group of ports on one or more Ethernet switches that form an independent traffic domain. Traffic generated by the end nodes of a VLAN remains within the VLAN and does not cross over to the end nodes of other VLANs unless there is an interconnection device, such as a router or Layer 3 switch.
AT-S25 Management Software User’s Guide You could assign this number manually or allow the management software to do it automatically. If you allow the management software to do it automatically, it will simply select the next available VID. This is acceptable when you are creating a new, unique VLAN. If you are creating a VLAN on a switch that will be part of a larger VLAN that spans several switches, then you will need to assign the number yourself so that the VLAN has the same VID on all switches.
Section II: Local and Telnet Mangement ❑ A port can be an untagged member of only one port-based VLAN at a time. ❑ Each port must be assigned a PVID. This value must be the same for all ports in a port-based VLAN and it must match the VLAN’s VID. This value is assigned automatically by the AT-S25 management software. ❑ If there are end nodes in different VLANs that need to communicate with each other, a router or Layer 3 switch is required to interconnect the VLANs.
AT-S25 Management Software User’s Guide Port-based VLAN Example Figure 45 is an example of two port-based VLANs that span an AT-8316F or an AT-8324 Switch and one AT-8024 Switch.
Section II: Local and Telnet Mangement Table 10 lists the ports assignments for the Sales and Production VLANs: Table 10 Port Assignments of the Port-based VLAN Example Switch Sales VLAN (VID 2) Production VLAN (VID 3) AT-8324 Switch (Master) Ports 1 - 7 (PVID 2) Ports 17, 19 - 24 (PVID 3) AT-8324 Switch (Slave) Ports 1 - 4, 8 (PVID 2) Ports 20, 21, 23, 24 (PVID 3) AT-8024 Switch Ports 1 - 4, 7 (PVID 2) Ports 19, 21 -2 4 (PVID 3) Each VLAN is briefly summarized below: ❑ Sales VLAN — This VLAN has
AT-S25 Management Software User’s Guide Tagged VLAN Overview The second type of VLAN supported by the AT-8300 Series switch is the tagged VLAN. VLAN membership in a tagged VLAN is determined by information within the frames that are received on a port. This contrasts to a port-based VLAN, where the PVIDs assigned to the ports determine VLAN membership. The VLAN information within an Ethernet frame is referred to as a tag or tagged header.
Section II: Local and Telnet Mangement VLAN Name For an explanation of VLAN Name, refer to VLAN Name on page 120. VLAN Identifier For an explanation of VLAN Identifier, refer to VLAN Identifier on page 120. Tagged and Untagged Ports You need to specify which ports will be members of the VLAN. In the case of a tagged VLAN, it will usually be a combination of both untagged ports and tagged ports. You specify which ports will be tagged and which untagged when you create the VLAN.
AT-S25 Management Software User’s Guide Tagged VLAN Example Figure 46 is an example of a network that uses tagged ports in two tagged VLANs to share network devices.
Section II: Local and Telnet Mangement The port assignments for the VLANs are as follows: Sales VLAN (VID 2) Production VLAN (VID 3) Untagged Ports Untagged Ports Tagged Ports Tagged Ports AT-8316F or AT-8324 Switch AT-8324 Switch (Master) 1 to 6, 9 (PVID 2) 19 - 24, 15 (PVID 3) AT-8324 Switch (Slave) 1 - 4 (PVID 2) 10, 16 22 - 24 (PVID 3) 10, 16 AT-8024 Switch 1 - 4 (PVID 2) 9 21 - 24 (PVID 3) 9 This configuration is similar to the port-based VLAN example earlier in this appendix, but u
AT-S25 Management Software User’s Guide Basic VLAN Mode Overview The Fast Ethernet switches support a special VLAN configuration referred to as Basic VLAN Mode. When the Basic VLAN Mode is activated, frames are forwarded based solely on MAC addresses. All VLAN information, including PVIDs assigned to ports and VLAN tags in tagged frames, is ignored. Tagged frames are analyzed only for priority level. Packets are passed through the switch unchanged.
Section II: Local and Telnet Mangement Creating a Port-based or Tagged VLAN This procedure explains how to create a new VLAN. A new VLAN automatically spans all of the switches in a stack, making it unnecessary for you to have to create the VLAN on each switch in a stack. Once you have assigned the new VLAN a name and VID, you designate the ports of the VLAN from the different switches in the stack. To create a new port-based or tagged VLAN, perform the following procedure: 1.
AT-S25 Management Software User’s Guide 3. Type 1 to select Create VLAN. The Create VLAN window is shown in Figure 49. Figure 49 Create VLAN Menu 4. Type 1 to select VLAN Name. The following prompt is displayed: Enter new value -> 5. Enter a name for the new VLAN of from one to nineteen alphanumeric characters. The name should reflect the function of the nodes of the VLAN (for example, Sales or Accounting).
Section II: Local and Telnet Mangement 7. You are now ready to begin add ports to the new VLAN. But before you do, examine the prompt in the upper right portion of the window to determine the switch module of the stack your management session is currently addressing. If there are ports on this switch you want to add as tagged or untagged ports to the VLAN, then continue with the following sub-steps.
AT-S25 Management Software User’s Guide Note When you create a new VLAN, ports designated as untagged ports of the new VLAN are automatically removed from their current untagged VLAN assignment. For example, if you are creating a new VLAN on a switch that contains only the Default_VLAN, the ports that you specify as untagged ports of the new VLAN are automatically removed from the Default_VLAN when they are moved to the new VLAN.
Section II: Local and Telnet Mangement Modifying a VLAN This procedure explains how to change the name and the tagged and untagged ports of a VLAN. You cannot change a VLAN’s VID. Note To modify a VLAN, you need to know its VID. To view VLAN VIDs, refer to the procedure Displaying VLAN Information on page 137. To modify a VLAN, perform the following procedure: 1. From the Main Menu, type 2 to select VLAN Menu. 2. From the VLAN Menu, type 1 to select VLAN Definition. 3.
AT-S25 Management Software User’s Guide should reflect the function of the nodes of the VLAN (for example, Sales or Accounting). The name can not contain spaces nor special characters, such as asterisks (*) or exclamation points (!). 7. You are now ready to add or delete ports from the VLAN. But before you do, examine the prompt in the upper right portion of the window to determine the switch module of the stack your management session is currently addressing.
Section II: Local and Telnet Mangement 9. Type U to select Update VLAN. The changes to the VLAN are activated on the stack. 10. Type S to select Save Configuration changes. 11. Repeat this procedure to modify other VLANs.
AT-S25 Management Software User’s Guide Displaying VLAN Information To view the name, VID number, and member ports of all the VLANs on a switch, perform the following procedure: 1. From the Main Menu, type 2 to select VLAN Menu. 2. From the VLAN Menu, type 1 to select VLAN Definition. 3. From the VLAN Definition menu, type 4 to select Show All VLANs. The Show All VLANs window is displayed. An example of the window is shown in Figure 51.
Section II: Local and Telnet Mangement Deleting a VLAN This procedure deletes a port-based or tagged VLAN from a stack. Note To delete a VLAN, you need to know its VID. To view a VLAN’s VID, perform to the procedure Displaying VLAN Information on page 137. To delete a VLAN, perform the following procedure: 1. From the Main Menu, type 2 to select VLAN Menu. 2. From the VLAN Menu, type 1 to select VLAN Definition. 3. From the VLAN Definition menu, type 3 to select Delete VLAN.
AT-S25 Management Software User’s Guide 6. Type D to delete the VLAN or R to cancel the procedure. The following confirmation prompt is displayed: Are you sure you want to delete this VLAN (Y/N) [Yes/No] -> 7. Type Y to delete the VLAN or N to cancel the procedure. Press the Enter key.
Section II: Local and Telnet Mangement Deleting All VLANs This section contains the procedure for deleting all VLANs, except the Default_VLAN, from a stack. To delete selected VLANs, perform the procedure Deleting a VLAN on page 138. To delete all VLANs on a stack, perform the following procedure: 1. From the Main Menu, type 2 to select VLAN Menu. 2. From the VLAN Menu, type 1 to select VLAN Definition. 3. From the VLAN Definition menu, type 6 to select Clear All VLANs.
AT-S25 Management Software User’s Guide Displaying PVIDs The following procedure displays a window that lists the PVIDs for all the ports on the switch. You cannot change the PVID of a port. The AT-S25 management software automatically sets the PVID when a port is made an untagged member of a VLAN, assigning it a PVID value equal to the VID. The window described in this section also contains the priority queue settings for each port.
Section II: Local and Telnet Mangement Figure 54 Show Port VLANs and Priorities Window The PVID column displays the current PVID value for each switch port. Note The Priority and Override Priority columns relate to the switch’s Class of Service feature. For information, refer to Chapter 11, Class of Service on page 161.
AT-S25 Management Software User’s Guide Specifying a Management VLAN In order for you to remotely manage an AT-8316F or AT-8324 Switch, there must exist a communications path through which the management station and the switch to be managed can communicate. If the management station is connected directly to a port on the switch, either through a tagged or untagged port, then the communications path automatically exists and you could fully manage the switch.
Section II: Local and Telnet Mangement Now let’s assume that you have decided to create a VLAN called NMS with a VID of 24 for the sole purpose of remote network management. For this, you would need to create the NMS VLAN on each AT-8316F or AT-8324 Switch that you wish to manage remotely, being sure to assign each NMS VLAN the VID of 24. You would also need to specify the NMS VLAN as the management VLAN on each switch using the management software.
AT-S25 Management Software User’s Guide Switching the VLAN Mode To switch a VLAN’s mode from Tagged to Basic, or vice versa, perform the following procedure: 1. From the Main Menu, type 5 to select System Config Menu. The System Config Menu in Figure 47 is displayed. Figure 55 System Config Menu 2. Type 1 to select Switch Mode and press the Enter key. The prompt message is displayed: The switch will be rebooted after changing the switch mode. Do you want to continue? (Y/N): 3.
Chapter 10 MAC Address Table The chapter contains the procedures for viewing the static and dynamic MAC addresses in the MAC address table.
AT-S25 Management Software User’s Guide MAC Address Overview The AT-8300 Series switch has a MAC address table up to 12K in size. The switch uses the table to store the MAC addresses of the network nodes connected to its ports, along with the port number on which each address was learned. The devices that you connect to your network have a unique MAC address. A MAC address is assigned to a device by the device’s manufacturer.
Section II: Local and Telnet Mangement The type of MAC address described above is referred to as a dynamic MAC address. Dynamic MAC addresses are addresses that the switch learns by examining the source MAC addresses of the frames received on the ports. Dynamic MAC addresses are not stored indefinitely in the MAC Menu. The switch deletes a dynamic MAC address from the table if it does not receive any frames from the node after a specified period of time.
AT-S25 Management Software User’s Guide Viewing MAC Addresses To display the MAC Menu, perform the following procedure: 1. From the Main Menu, type 6 to select MAC Menu. The MAC Menu in Figure 56 is displayed. Figure 56 MAC Menu Viewing All MAC Addresses To display all the MAC addresses, including the static, dynamic, or multicast MAC addresses, perform the following procedure: 1. From the Main Menu, type 6 to select MAC Menu. 2. From the MAC Menu, type 1 to select Show all MAC addresses.
Section II: Local and Telnet Mangement Figure 57 Show all MAC addresses Window Table 11 lists the parameters appeared in the Show all MAC addresses window. These parameters are for viewing purposes only. Table 11 Show all MAC address Parameters PARAMETER DESCRIPTION MAC Address The MAC address of the node connected to the port. Module The switch module in the stack where the MAC address was learned. Port The port on the switch where the MAC address was learned.
AT-S25 Management Software User’s Guide Viewing Static MAC Addresses Only To display only static MAC addresses, perform the following procedure: 1. From the Main Menu, type 6 to select MAC Menu. 2. From the MAC Menu, type 2 to select Show all static MAC addresses. A window is displayed with all the MAC addresses. An example of the Show all MAC addresses window is displayed in Figure 58.
Section II: Local and Telnet Mangement Viewing Multicast MAC Addresses Only To display only multicast MAC addresses, perform the following procedure: 1. From the Main Menu, type 6 to select MAC Menu. 2. From the MAC Menu, type 3 to select Show all multicast MAC addresses. A window is displayed with all the multicast MAC addresses. An example of the Show all multicast MAC addresses window is shown in Figure 59.
AT-S25 Management Software User’s Guide Viewing MAC Addresses on Base Ports Only This selection is useful if you are managing an AT-8300 Series stack that has switches containing optional expansion modules. You could use this selection to view only those MAC addresses learned on the base ports of the switches and exclude the ports on the expansion modules. To view only the MAC addresses learned on the base ports, perform the following procedure: 1. From the Main Menu, type 6 to select MAC Menu. 2.
Section II: Local and Telnet Mangement Viewing MAC Addresses by Port & Module This section contains the procedure for viewing the dynamic MAC addresses that have been learned on a particular port. You could also use this procedure to view any static MAC addresses that have been assigned to a port. 1. From the Main Menu, type 6 to select MAC Menu. 2. From the MAC Menu, type 7 to select Show MAC addresses by port & module. The following prompt is displayed: Please enter module number -> [1 to 8] -> 3.
AT-S25 Management Software User’s Guide Viewing the MAC Addresses of a VLAN The procedure in this section can be useful if you created VLANs on the switch and want to view the MAC addresses of the nodes of a particular VLAN. (This procedure is not of much value if the switch contains only the Default VLAN, in which case displaying the entire MAC address table, as explained earlier in this chapter, produces the same result.
Section II: Local and Telnet Mangement Identifying a Port or a Module Number by MAC Address In some situations, you might want to know which port a particular MAC address was learned. You could display the MAC Menu and scroll through the list looking for the MAC address. But if the switch is part of a large network, finding the address could prove difficult. The procedure in this section offers an easier way.
AT-S25 Management Software User’s Guide Deleting MAC Addresses The following procedure explains how to delete a static, dynamic, or multicast MAC address from the MAC Menu. To delete an address from the MAC Menu, perform the following procedure: 1. From the Main Menu, type 6 to select MAC Menu. 2. From the MAC Menu, type A to select Delete MAC Address. The following prompt is displayed: Please enter a MAC address -> 3.
Section II: Local and Telnet Mangement Deleting All Dynamic MAC Addresses The management software allows you to purge the MAC Menu of all dynamic MAC addresses. Once the table has been purged, the switch immediately begins to relearn the MAC addresses as frames are received on the ports. Note This procedure does not delete static MAC addresses. To delete all dynamic MAC addresses from the MAC Menu, perform the following procedure. 1. From the Main Menu, type 6 to select MAC Menu. 2.
AT-S25 Management Software User’s Guide Adding Static and Multicast MAC Addresses This section contains the procedure for adding the static and multicast addresses to the switch. You could assign up to 150 static MAC addresses on a stack of an AT-8316F or an AT-8324 Switch. To add a static or multicast address to the MAC Menu, perform the following procedure: 1. From the Main Menu, type 6 to select MAC Menu. 2. From the MAC Menu, type 9 to select Add static MAC address.
Section II: Local and Telnet Mangement Changing the Aging Time The switch uses the aging time to delete inactive dynamic MAC addresses from the MAC Menu. When the switch detects that no packets have been sent to or received from a particular MAC address in the table after the period specified by the aging time, the switch deletes the address. This prevents the table from becoming full of addresses of nodes that are no longer active. To adjust the aging time, perform the following procedure: 1.
Chapter 11 Class of Service This chapter contains the procedures for configuring the Class of Service (CoS) feature of the AT-S25 software.
Section II: Local and Telnet Mangement Class of Service Overview The AT-8316F or AT-8324 Switch supports CoS as specified in the IEEE 802.1p and 802.1Q standards. CoS can be important in network environments where there are time-critical applications, such as voice transmission or video conferencing, that can be adversely affected by packet transfer delays. Prior to CoS, network traffic was handled in a best-effort manner. File transfer delays did occur, but were mostly transparent to network users.
AT-S25 Management Software User’s Guide Configuring CoS To configure CoS for a port, perform the following procedure: 1. From the Main Menu, type 2 to select VLAN Menu. 2. From the VLAN Menu, type 2 to select Configure Port Priorities. The Configure Port Priorities menu in Figure 61 is displayed. Figure 61 Configure Port Priorities Menu 3. Type 1 to select Configure Port Priorities. The following prompt is displayed: Enter port number -> 4.
Section II: Local and Telnet Mangement The default setting is No. Observe the following when setting the Override Priority. ❑ When the Override is set to No and the Port Priority Level is set to 0, all incoming packets are directed to the queue indicated in the Tag Priority Level. ❑ When the Override is set to No and the Port Priority Level is set to 1, all incoming packets are directed to “high” priority queue.
AT-S25 Management Software User’s Guide Show Port VLANs & Priorities To display the port VLANs and priorities, perform the following procedure: 1. From the Main Menu, type 2 to select VLAN Menu. 2. From the VLAN Menu, type 2 to select Configure Port Priorities. The Configure Port Priorities menu in Figure 61 on page 163 is displayed. 3. If necessary, use the M - Select another module option to change to another switch module in the stack. 4.
Chapter 12 IGMP Snooping This chapter explains how to activate and configure the Internet Group Management Protocol (IGMP) snooping feature on the stack.
AT-S25 Management Software User’s Guide IGMP Snooping Overview IGMP enables routers to create lists of nodes that are members of multicast groups. (A multicast group is a group of end nodes that want to receive multicast packets from a multicast application.) A router creates a multicast membership list by periodically sending out queries to the local area networks connected to its ports. A node wanting to become a member of a particular multicast group responds to a query by sending a report.
Section II: Local and Telnet Mangement Without IGMP snooping, a switch would have to flood multicast packets out all of its ports, except the port on which it received the packet. Such flooding of packets can negatively impact the switch and network performance. The AT-8300 Series switch supports both IGMP Version 1 and Version 2.
AT-S25 Management Software User’s Guide Activating IGMP Snooping To activate or deactivate IGMP snooping on the stack and to configure IGMP snooping parameters, perform the following procedure: 1. From the Main Menu, type 5 to select System Config Menu. 2. From the System Config Menu, type A to select Advanced Configuration. 3. From the Advanced Configuration window, type 1 to select IGMP Snooping Configuration. The IGMP Snooping Configuration menu in Figure 63 is displayed.
Section II: Local and Telnet Mangement Table 13 lists the parameters appeared in the IGMP Snooping Configuration menu. Table 13 IGMP Snooping Configuration Parameters PARAMETER DESCRIPTION 1 - IGMP Snooping Status Enables and disables IGMP snooping on the stack. After selecting this option, type E to enable or D to disable this feature. 2 - Multicast Host Topology Defines whether there is only one host node per stack port or multiple host nodes per port.
AT-S25 Management Software User’s Guide PARAMETER DESCRIPTION 3 - Host/Router Timeout Interval Specifies the time period in seconds after which the stack determines that a host node has become inactive. An inactive host node is a node that has not sent an IGMP report during the specified time interval. The range is from 1 second to 86,400 seconds (24 hours). The default is 260 seconds.
Section II: Local and Telnet Mangement Displaying a List of Host Nodes You could use the AT-S25 software to display a list of the multicast groups on a stack, as well as the host nodes. To display the list, perform the following procedure: 1. From the Main Menu, type 5 to select System Config Menu. 2. From the System Config Menu, type A to select Advanced Configuration. 3. From the Advanced Configuration window, type 1 to select IGMP Snooping Configuration.
AT-S25 Management Software User’s Guide Displaying a List of Multicast Routers A multicast router is a router that is receiving multicast packets from a multicast application and transmitting the packets to host nodes. You could use the AT-S25 software to display a list of the multicast routers that are connected to the stack. To display a list of the multicast routers, perform the following procedure: 1. From the Main Menu, type 5 to select System Config Menu. 2.
Chapter 13 Ethernet Statistics This chapter contains the procedures for displaying and clearing data traffic statistics.
AT-S25 Management Software User’s Guide Displaying Port Statistics To display Ethernet port statistics, perform the following procedure: 1. From the Main Menu, type 7 to select Ethernet Statistics. The Ethernet Statistics menu in Figure 66 is displayed. Figure 66 Ethernet Statistics Menu 2. From the Ethernet Statistics menu, type M if you wish to select a module other than the one currently displayed. The prompt message is displayed: Select Module ID: [1 to 8] -> 3.
Section II: Local and Telnet Mangement Table 16 lists the parameters appeared in the Display Port Statistics and Display Module Statistics windows. These parameters are for viewing purposes only. Table 16 Port and Module Statistics Parameters PARAMETER DESCRIPTION TX_Total (Transmit Packets) Number of packets transmitted out the port. RX_Total (Receive Packets) Number of packets received on the port. RX-Ucast (Received Unicast) Number of unicast packets received on the port.
AT-S25 Management Software User’s Guide Displaying Switch Statistics To display Ethernet statistics for an entire switch, perform the following procedure: 1. From the Main Menu, type 7 to select Ethernet Statistics. 2. From the Ethernet Statistics menu, type M if you wish to select a module other than the one currently displayed. The prompt message is displayed: Select Module ID: [1 to 8] -> 3. Enter the ID of the module you wish to select, and press the Enter key. 4.
Chapter 14 File Downloads and Uploads This chapter contains the procedures for displaying and clearing data traffic statistics.
AT-S25 Management Software User’s Guide There are three files that co-exist on an AT-8316F or an AT-8324 Switch while the device is operating. They are: ❑ AT-S25 management software This is the operating software for the switch. ❑ AT-S25 image file This image contains the code that initially controls the switch whenever you power on or reset the unit. ❑ Switch configuration file This file contains the settings for the different switch parameters. such as VLANs, STP settings, and so forth.
Section II: Local and Telnet Mangement Obtaining Software Updates Allied Telesyn periodically updates and revises the AT-S25 management software for your AT-8316F and AT-8324 Switches. The latest version of the software is posted on the Allied Telesyn web site for you to download. New releases of the AT-S25 management software are available from the Allied Telesyn web site at www.alliedtelesyn.com. Note All switch models in the AT-8316F or AT-8324 Switch use the same management software image.
AT-S25 Management Software User’s Guide Transferring Files from a Local Management Interface This section contains the procedure for downloading or uploading the following files onto a switch from a local management interface. ❑ New AT-S25 image file ❑ Configuration file You can transfer a file using Xmodem or TFTP. In order to use TFTP, there must be a node on your network with the TFTP server software and the file to download must be stored on the same node.
Section II: Local and Telnet Mangement Figure 69 Downloads & Uploads Menu Downloading An Image File To download a new image file onto a switch, perform the following procedure: 1. From the Main Menu, type 4 to select Administration Menu. 2. From the Administration Menu, type D to select Downloads & Uploads Menu. 3. To download a new image file onto the switch, type 1 to select Download Image through Xmodem/TFTP.
AT-S25 Management Software User’s Guide ❑ To download a file using TFTP, perform the following procedure: a. Type T and press the Enter key. The following prompt is displayed: TFTP Server IP address: b. Enter the IP address of the TFTP server. The following prompt is displayed: Remote File Name: c. Enter the directory path and file name of the new management software image that you wish to download; then press the Enter key. Note The image file must be stored on the TFTP server.
Section II: Local and Telnet Mangement Downloading Configuration File To download a new configuration file onto a switch, perform the following procedure: 1. From the Main Menu, type 4 to select Administration Menu. 2. From the Administration Menu, type D to select Downloads & Uploads Menu. 3. To download a new configuration file onto the switch, type 2 to select Download Configuration through Xmodem/TFTP.
AT-S25 Management Software User’s Guide Uploading Configuration File to TFTP Server To upload a configuration file to the TFTP server on an AT-8316F or an AT-8324 Switch, perform the following procedure: 1. From the Main Menu, type 4 to select Administration Menu. 2. From the Administration Menu, type D to select Downloads & Uploads Menu. 3. To upload a new configuration file onto the switch, type 3 to select Upload Configuration to TFTP Server.
Section II: Local and Telnet Mangement Transferring Files Using HyperTerminal Interface This section contains the procedure for downloading or uploading a file using the Hilgraeve HyperTerminal program. 1. From the HyperTerminal main window, select the Transfer menu. 2. Select Send File from the Transfer pull-down menu, as shown in Figure 70. Figure 70 Local Management Window The Send File window in Figure 71 on page 186 is displayed. Figure 71 Send File Window 3.
AT-S25 Management Software User’s Guide The software immediately begins to download onto the switch. The Xmodem File Send window in Figure 72 displays current status of the software download. The download process takes a couple minutes to complete. Figure 72 XModem File Send Window If you are installing a new management image, the switch begins to initialize the software after it is installed, a process that takes approximately one minute to complete.
Section III Web Browser Management The chapters in this section explain how to manage the AT-8316F and AT-8324 Fast Ethernet Switches using a web browser.
Chapter 15 Starting a Web Browser Management Interface This chapter contains the procedure for starting a management interface on an AT-8316F or an AT-8324 Switch using a web browser, such as Microsoft® Internet Explorer or Netscape® Navigator.
Section III: Web Browser Management Web Browser Management Interface This section explains how to use a web browser management interface. Starting a Web Browser Interface Starting a Web browser management interface requires that the Master switch on your network that has an IP address. Once you have started a Web browser management interface on the Master switch, you will have management access to all other AT-8316F and AT-8324 Switches that reside in the same switch.
AT-S25 Management Software User’s Guide Note The user names cannot be changed and the passwords are case sensitive. To change a password, refer to Configuring an IP Address and Switch Name on page 45. The window shown in Figure 74 is displayed. Figure 74 Home Page This is the Home page of the management software. In the left portion of the Home page is the main menu: ❑ Configuration ❑ Monitoring ❑ Exit Note A web browser management interface remains active even if you link to other sites.
Section III: Web Browser Management Browser Tools Quitting from a Web Browser Management Interface You could use the browser tools to move around the web-browser menus. Selecting Back on your browser’s toolbar returns you to the previous display. You could also use the browser’s bookmark feature on frequently-used web-browser menus and windows. To exit from a web browser management interface, perform the following procedure: 1. From any page in AT-S25 management software, select Exit.
Chapter 16 Basic Switch Parameters This chapter contains the following sections: ❑ Configuring an IP Address and Switch Name on page 194 ❑ Activating the BOOTP and DHCP Services on page 198 ❑ Resetting a Switch on page 199 ❑ Viewing System Information on page 200 ❑ Configuring the SNMP Parameters and Trap IP Addresses on page 202 ❑ Pinging a Remote System on page 204 ❑ Returning the AT-S25 Software to the Factory Default Values on page 205 193
Section III: Web Browser Management Configuring an IP Address and Switch Name Note For guidelines on when to assign an IP address, subnet address, and gateway address to an AT-8316F or an AT-8324 Switch, refer to When Does a Switch Need an IP Address? on page 42. To set the basic parameters for an AT-8316F or an AT-8324 Switch, perform the following procedure: 1. From the Home Page, select Configuration. The Configuration window is displayed with the System menu option selected by default. 2.
AT-S25 Management Software User’s Guide Note This procedure only describes the parameters in the Administration section of the window. The parameters in the Configuration and Broadcast Storm Control sections are discussed later in this guide. Note The Reset button at the bottom of the window is used to reset the switch. 3. Enter or modify the parameters in the window as desired. Changes to the parameters take effect immediately on the switch.
Section III: Web Browser Management PARAMETER DESCRIPTION Default Gateway This parameter specifies the default router’s IP address. This address is required if you intend to remotely manage the switch from a management station that is separated from the switch by a router. Manager Password These parameters are used to change the administrator’s login password for the switch. The password can be from 0 to 20 characters in length.
AT-S25 Management Software User’s Guide 4. Click Apply. Changes are immediately activated on the switch. Note A change to any of the above parameters, including the IP address and subnet mask, is immediately activated on the switch. Caution A change to the IP address of the switch will result in the loss of the remote management interface. You could restart the management interface using the switch’s new IP address.
Section III: Web Browser Management Activating the BOOTP and DHCP Services Note For guidelines or background information on BOOTP and DHCP, refer to the section Activating the BOOTP and DHCP Services on page 46. To activate or deactivate the BOOTP and DHCP protocols on the switch from a web browser management interface, perform the following procedure: 1. From the Home Page, select Configuration. The Configuration window is displayed with the System menu option selected by default. 2.
AT-S25 Management Software User’s Guide Resetting a Switch To reset a switch, perform the following procedure: 1. From the Home Page, select Configuration. The Configuration window is displayed with the System option selected by default. 2. If the System menu option is not selected, select it and then select the General tab. 3. Click Reset. A confirmation prompt is displayed. 4. Click OK to reset the switch or Cancel to cancel the procedure. Resetting the switch ends your web browser management interface.
Section III: Web Browser Management Viewing System Information To view basic information about the switch, perform the following procedure: 1. From the Home page, select Monitoring. The Monitoring window is displayed with the System menu option selected by default. 2. If the System menu option is not selected, select it and then select the General tab. The General tab window in Figure 77 is displayed.
AT-S25 Management Software User’s Guide Table 18 lists the parameters appeared in the Monitoring General window. The parameters in this window are for viewing purposes only. You could not change any of the values from this window.
Section III: Web Browser Management Configuring the SNMP Parameters and Trap IP Addresses To change the switch’s SNMP community strings or to specify the IP addresses of management stations to receive traps from the switch, perform the following procedure: 1. From the Home page, select Configuration. The Configuration window is displayed with the System menu option selected by default. 2. If the System menu option is not selected, select it and then select the SNMP tab.
AT-S25 Management Software User’s Guide ❑ To specify the IP addresses of up to four management workstations on your network to receive traps from the switch, use the selections below: Trap Receiver 1 Trap Receiver 2 Trap Receiver 3 Trap Receiver 4 Note The Enable SNMP Access check box the window controls whether the switch can be remotely managed using an SNMP application program. If the check box is empty, the switch cannot be managed through SNMP. This is the default. 4. Click Apply.
Section III: Web Browser Management Pinging a Remote System You could instruct the switch to ping a node on your network. This procedure is useful in determining whether a valid link exists between the switch and another device. To ping a network device, perform the following procedure: 1. From the Home Page, select Monitoring. The Monitoring window is displayed with the System menu option selected by default. 2. If the System menu option is not selected, select it and then select the Ping Client tab.
AT-S25 Management Software User’s Guide Returning the AT-S25 Software to the Factory Default Values The procedure in this section returns all AT-S25 software parameters, except the IP address, subnet mask, and gateway address, to their default values. This procedure also deletes any VLANs that you have created on the switch. Note The AT-S25 software default values can be found in Appendix A, AT-S25 Default Settings on page 272.
Chapter 17 Port Parameters The procedures in this chapter allow you to view and change the parameter settings for the individual ports on a switch. Examples of port parameters that you could adjust include duplex mode and port speed.
AT-S25 Management Software User’s Guide Configuring Port Parameters To configure the parameter settings for a port on a switch, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 1. 3. Select the Port Setting tab. The Port Settings window is shown in Figure 81. Figure 81 Configuration - Port Settings Window A graphical image of an AT-8316F or an AT-8324 Fast Ethernet Switch is displayed. 4. Select a port that you wish to configure.
Section III: Web Browser Management The Settings for Port window is displayed. An example of the window is shown in Figure 82. Figure 82 Example of Settings for Port(s) Window Note Clicking Default returns the port settings to the default values. Default values are listed in Appendix A, AT-S25 Default Settings on page 272. 6. Enter or modify the port parameters as desired. Table 19 lists the parameters appeared in the Settings for Port window.
AT-S25 Management Software User’s Guide Parameter Speed and Mode DESCRIPTION Configures the operating speed and duplex mode of the selected port. Possible settings for this parameter are: • Auto-Negotiate: Allows the port to automatically negotiate with the device connected to it (default). • 10Mbps - Half Duplex • 10Mbps - Full Duplex • 100Mbps - Half Duplex • 100Mbps - Full Duplex Disable Flow Control Uses a special pause packet to stop the end node from sending frames.
Section III: Web Browser Management Displaying Port Status and Statistics The procedure in this section displays the operating status of the ports on a switch and port statistics. You could view a port’s operating speed, duplex mode, and more. You could also view the operating status of any GBIC modules installed in an AT-8324. To display the status or statistics of a switch port, perform the following procedure: 1. From the Home page, select Monitoring. 2. From the Monitoring page, select Layer 1. 3.
AT-S25 Management Software User’s Guide If you select Port Status, the Port Status window in Figure 84 is displayed. Figure 84 Port Status Window The information in this window is for viewing purposes only. To adjust port parameters, refer to Configuring Port Parameters on page 207. Table 20 lists the parameters appeared in the Port Status window.
Section III: Web Browser Management PARAMETER Nego DESCRIPTION The status of Auto-Negotiation on the port. Possible settings for this parameter are: • Auto - Indicates that the port is using AutoNegotiation to set operating speed and duplex mode. • Manual - Indicates that the operating speed and duplex mode have been set manually. Link The status of the link between the port and the end node connected to the port.
AT-S25 Management Software User’s Guide If you select Statistics, the Statistics window in Figure 85 is displayed. Figure 85 Port Statistics Window Table 21 lists the parameters appeared in the Port Statistics window. Table 21 Port Statistics Parameters PARAMETER DESCRIPTION Port Number of the selected port. TX-Total Number of bytes transmitted out the port. RX-Total Number of bytes received on the port. RX-Ucast Number of unicast packets received on the port.
Chapter 18 Port Security This chapter explains how to display the current port security level on the switch from a web browser management interface. Note For background information on port security, refer to Port Security Overview on page 68. Note A switch’s port security level can be changed only from a local management interface.
AT-S25 Management Software User’s Guide Displaying the Port Security Level To display the switch’s port security level, perform the following procedure: 1. From the Home page, select Monitoring. 2. From the Configuration page, select Layer 2. 3. From the Layer 2 page, select the Port Security tab. The current security level is displayed.
Chapter 19 Port Trunks This chapter contains the procedure for creating or deleting a port trunk from a web browser management session. Note For background information and guidelines on port trunking, refer to Port Trunking Overview on page 78.
AT-S25 Management Software User’s Guide Creating a Port Trunk Caution Do not connect the cables of a port trunk to the ports on the switch until after you have configured the ports on both the switch and the end node. Connecting the cables prior to configuring the ports can create loops in your network topology, which can result in broadcast storms and poor network performance. To create a port trunk, perform the following procedure: 1. From the Home page, select Configuration. 2.
Section III: Web Browser Management The Port Trunking window is displayed in Figure 88. The graphic image of the switch will different depending on the switch model. Figure 88 Port Trunking Window - Create 6. Select the Trunk Number pull-down list and choose the port group where you want to create the port trunk. 7. In the Trunk Name text box, enter a name for the new trunk. The name can be from one to ten alphanumeric characters. 8.
AT-S25 Management Software User’s Guide Modifying a Port Trunk To modify a port trunk, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 1. 3. Select the Port Trunking tab. The Port Trunking tab window in Figure 87 on page 217 is displayed. 4. Select the Module pull-down list and choose the switch in the stack with the port trunk you want to modify. 5. Click the circle next to the number of the trunk you want to modify.
Section III: Web Browser Management Deleting a Port Trunk Caution Disconnect the cables from the port trunk on the switch before performing the following procedure. Deleting a port trunk without first disconnecting the cables can create loops in your network topology, which can result in broadcast storms and poor network performance. To delete a port trunk, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 1. 3.
AT-S25 Management Software User’s Guide Displaying Port Trunks To display the port trunks on a switch, do the following: 1. From the Home page, select Configuration or Monitoring. 2. Select Layer 1. 3. Select the Port Trunking tab. 4. Select the Module pull-down list and choose the switch in the stack with the port trunks you want to view.
Chapter 20 Port Mirroring This chapter contains the procedures for creating and deleting a port mirror. Note For background information on port mirroring, refer to Port Mirroring Overview on page 89.
AT-S25 Management Software User’s Guide Creating a Port Mirror To create a port mirror, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 1. 3. Select the Port Mirroring tab. The Port Mirroring window in Figure 90 is displayed. Figure 90 Port Mirroring Window 4. Click the Enable Port Mirroring check box. 5. Click Apply.
Section III: Web Browser Management New selections appear in the Port Mirroring window, as shown in Figure 91. Figure 91 Port Mirroring Window 6. Use the Destination Module and Port pull-down menus to select the destination port. This is the port where the network analyzer will be located. 7. Use the Source Module and Port pull-down menus to select the source port. This is the port whose traffic is to be copied to the destination port. 8. Click Apply. The port mirror is immediately activated.
AT-S25 Management Software User’s Guide Deleting a Port Mirror To delete a port mirror, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 1. 3. Select the Port Mirroring tab. The Port Mirroring window in Figure 91 on page 224 is displayed. 4. Click the Enable Port Mirroring check box. This removes the check from the box. 5. Click Apply. Port mirroring is now disabled on the stack.
Section III: Web Browser Management Viewing Source and Destination Ports To view the source and destination ports of a port mirror, do the following: 1. From the Home page, select Configuration or Monitoring. 2. Select Layer 1. 3. Select the Port Mirroring tab. The Port Mirroring window in Figure 91 on page 224 is displayed.
Chapter 21 STP and RSTP This chapter explains how to configure the STP and RSTP parameters from a web browser management interface. Sections in the chapter include: ❑ Enabling or Disabling STP or RSTP on page 228 ❑ Configuring STP on page 233 ❑ Displaying STP Status and Settings on page 235 ❑ Configuring RSTP on page 237 ❑ Displaying RSTP Status and Settings on page 240 Note For background information on rapid spanning tree, refer to STP and RSTP Overview on page 93.
Section III: Web Browser Management Enabling or Disabling STP or RSTP An AT-8300 Series stack can support STP and RSTP. Only one spanning tree protocol can be active on a stack at a time. Before you can enable a spanning tree protocol, you must first select it as the active spanning tree protocol. Once selected, you can then enable or disable it. To select the active spanning tree protocol and to enable or disable it, perform the following procedure: 1. From the Home page, select Configuration. 2.
AT-S25 Management Software User’s Guide 6. Click Apply. 7. If you activated STP, go to Configuring STP on page 233. 8. If you activated RSTP, go to Configuring RSTP on page 237.
Section III: Web Browser Management STP and RSTP Parameters Since both STP and RSTP are sharing the same parameters; instead of having them listed by sections in this chapter, they are now listed in the Table 22 below: Note A change to parameter will take effect on both protocols. Table 22 STP and RSTP Parameters PARAMETER Force Version DESCRIPTION This selection determines whether the bridge will operate with RSTP or in an STP-compatible mode.
AT-S25 Management Software User’s Guide Table 22 STP and RSTP Parameters PARAMETER DESCRIPTION Bridge Max Age The length of time after which stored bridge protocol data units (BPDUs) are deleted by the bridge. All bridges in a bridged LAN use this aging time to test the age of stored configuration messages called BPDUs. For example, if you use the default 20, all bridges delete current configuration messages after 20 seconds. This parameter can be from 6 to 40 seconds. The default is 20 seconds.
Section III: Web Browser Management Table 22 STP and RSTP Parameters PARAMETER DESCRIPTION Edge Port This parameter defines whether the port is functioning as an edge port. This parameter applies only to RSTP. For an explanation of this parameter, refer to Point-to-Point Ports and Edge Ports on page 98. Port The port number. Enable The pork link status. State The current state of the selected port. Role The current role of the selected port.
AT-S25 Management Software User’s Guide Configuring STP Configuring a Bridge’s STP Settings This section contains the procedure for configuring a bridge’s STP settings. Caution The bridge provides default STP parameters that are adequate for most networks. Changing them without prior experience and an understanding of how STP works might have a negative effect on your network. You should consult the IEEE 802.1d standard before changing any of the STP parameters.
Section III: Web Browser Management 2. Enter or modify the STP configuration settings as desired. For descriptions of the parameters, refer to Table 22, STP and RSTP Parameters on page 230. 3. Click Apply. Changes are immediately activated on the switch. Configuring a Port’s STP Settings To configure a port’s STP settings, perform the following procedure: 1.
AT-S25 Management Software User’s Guide Displaying STP Status and Settings Displaying Bridge’s STP Status and Settings To display a bridge’s STP status and settings, perform the following procedure: 1. From the Home page, select Monitoring. 2. From the Monitoring menu, select Layer 2 tab. 3. From the Layer 2 window, select the Spanning Tree tab. The Spanning Tree window in Figure 95 is displayed.
Section III: Web Browser Management The selected port(s) will turn white. (To deselect a port, click it again.) 2. Click Settings, the STP Port Status window displayed in Figure 96 is displayed. Figure 96 Monitoring - STP Settings Window The port’s STP settings displayed in this window are for viewing purpose only. Refer to Configuring a Port’s STP Settings on page 234 for parameter descriptions.
AT-S25 Management Software User’s Guide Configuring RSTP Configuring a Bridge’s RSTP Settings This section contains the procedure for configuring a bridge’s RSTP settings. Caution The bridge provides default RSTP parameters that are adequate for most networks. Changing them without prior experience and an understanding of how RSTP works might have a negative effect on your network. You should consult the IEEE 802.1w standard before changing any of the RSTP parameters.
Section III: Web Browser Management The RSTP Configuration Spanning Tree window in Figure 92 is displayed. Figure 97 RSTP Configuration Spanning Tree Window 3. Enter or modify the RSTP configuration settings as desired. For description of the parameters displayed in this window, refer to Table 22, STP and RSTP Parameters on page 230. 4. Click Apply. Changes are immediately activated on the switch. Configuring a Port’s RSTP Settings To configure a port’s RSTP settings, perform the following procedure: 1.
AT-S25 Management Software User’s Guide The RSTP Settings window displayed in Figure 94 is displayed. Figure 98 RSTP Settings Window 3. Enter or modify the RSTP settings as desired. For description of the parameters in this window, refer to Table 22, STP and RSTP Parameters on page 230. 4. Click Apply. Note All changes to a port’s RSTP settings, with the exception of port cost, are activated immediately. A change to the port cost value requires you to reset the switch.
Section III: Web Browser Management Displaying RSTP Status and Settings Displaying Bridge’s RSTP Status and Settings To display a bridge’s STP parameter status and settings, perform the following procedure: 1. From the Home page, select Monitoring. 2. From the Monitoring menu, select Layer 2 tab. 3. From the Layer 2 window, select the Spanning Tree tab. The Spanning Tree window in Figure 95 is displayed.
AT-S25 Management Software User’s Guide 2. Click Settings, the RSTP Settings window displayed in Figure 100 is displayed. Figure 100 Monitoring - RSTP Settings Window The parameters displayed in this window are for viewing purpose only. For description of these parameters, refer to Table 22, STP and RSTP Parameters on page 230.
Chapter 22 Virtual LANs This chapter contains the procedure on how to create, modify, and delete VLANs from a web browser management session. This chapter also explains how to change a switch’s VLAN operating mode. Note For background information on VLANs and the Basic VLAN mode, refer to Chapter 10, Virtual LANs.
AT-S25 Management Software User’s Guide Creating a VLAN To create a new VLAN, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration menu, select Layer 2. 3. From the Layer 2 window, select the VLAN tab. The VLAN window in Figure 101 is displayed. Figure 101 Configuration - VLAN Window 4. Click Add. The Add New VLAN window in Figure 102 is displayed.
Section III: Web Browser Management 5. The AT-S25 management software automatically assigns the next unused VID in the stack as the VID for the new VLAN. To assign the VLAN a different VID, click the VID field and enter a new VID for the VLAN. The range is 2 to 2048. The VID must be unique from the other VLANs defined in the same stack. 6. Click the Name text field and enter a name for the new VLAN of from one to fifteen alphanumeric characters.
AT-S25 Management Software User’s Guide Modifying a VLAN To modify a port-based or tagged VLAN, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration menu, select Layer 2. 3. From the Layer 2 window, select the VLAN tab. The VLAN window in Figure 101 on page 243 is displayed. 4. Click the button next to the name of the VLAN you want to modify. 5. Click Modify. The View/Update VLAN configuration window is displayed in Figure 103.
Section III: Web Browser Management 7. To add or remove tagged and untagged ports from the VLAN, modify the Untagged Ports and Tagged Ports fields next to each module. You can specify the ports individually (e.g., 2,5,11), as a range (e.g., 5-10), or both (e.g., 3,7,11-15,17). Note Removing an untagged port from the Default_VLAN without assigning it to another VLAN will leave the port as an untagged member of no VLAN. 8. Click Apply.
AT-S25 Management Software User’s Guide Deleting VLANs To delete a VLAN from the switch, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration menu, select Layer 2. 3. From the Layer 2 window, select the VLAN tab. The VLAN window in Figure 101 on page 243 is displayed. 4. Click the circle next to the name of the VLAN you want to delete. Note You cannot delete the Default_VLAN. 5. Click Remove. A confirmation prompt is displayed. 6.
Section III: Web Browser Management Displaying VLANs To display all the existing VLANs on a switch, perform the following procedure: 1. From the Home page, select Monitoring. 2. From the Monitoring page, select Layer 2. 3. From the Layer 2 page, select the VLAN tab. The VLAN window in Figure 104 is displayed. Figure 104 Monitoring - VLAN Window 4. Click the button next to the name of the VLAN you wish to view. 5. Click View. The View VLAN window in Figure 105 is displayed.
AT-S25 Management Software User’s Guide The parameters displayed in this window are for viewing purpose only. For information on these parameters, refer to Creating a VLAN on page 243. 6. Click Cancel to return to the previous menu.
Section III: Web Browser Management Changing a PVID Value The procedure in this section explains how to change a PVID value for a switch port. As explained in Port-based VLAN Overview on page 120, a port is assigned a PVID when it becomes an untagged port of a VLAN. A port’s PVID will be the same as the VLAN’s VID. For example, if you assign Port 4 on a switch as an untagged port to a VLAN with a VID of 7, the port is automatically assigned a PVID also of 7.
AT-S25 Management Software User’s Guide Note The selections Priority and Priority Override are described in Chapter 22, Class of Service on page 262. 6. Click the Port PVID VID pull-down menu and select the new PVID value for the port. The pull-down list displays the VIDs of all the existing VLANs in the stack. When you select a VID, the port’s PVID is changed to match the selected VID. 7. Click Apply. The change is immediately activated on the switch.
Section III: Web Browser Management Setting the Switch’s VLAN Mode This section contains the procedure for setting a stack’s VLAN mode. You can configure a stack to support port-based and tagged VLANs or to operate in the Basic VLAN mode. A stack can operate in only one VLAN mode at a time. Note Refer to Chapter 10, Virtual LANs, for background information on port-based and tagged VLANs and the Basic VLAN mode. To set the stacks VLAN mode, perform the following procedure: 1.
AT-S25 Management Software User’s Guide 4. In the Switch Mode section of the window, click either Basic or Tagged. ❑ If you select Basic, the switch will operate in the Basic VLAN mode. ❑ If you select Tagged, which is the default, the switch will support port-based VLANs and tagged VLANs. 5. Click Apply. 6. Click Reset to reset the stack. Note The new VLAN mode is not activated until the stack is reset.
Chapter 23 MAC Address Table This chapter contains instructions on how to view the dynamic and static and multicast addresses in the MAC Address Table of the switch. This chapter contains the following procedure: ❑ Viewing the MAC Address Table on page 255 ❑ Adding Static and Multicast MAC Addresses on page 258 ❑ Deleting MAC Addresses on page 259 ❑ Changing the Aging Time on page 260 Note For background information on MAC addresses, refer to MAC Address Overview on page 147.
AT-S25 Management Software User’s Guide Viewing the MAC Address Table To view the MAC Address Table, perform the following procedure: 1. From the Home page, select either Configuration or Monitoring. 2. From either the Configuration or the Monitoring page, select Layer 2. 3. From the Layer 2 page, select the MAC Address tab. The MAC Address window Figure 108 is displayed. Figure 108 MAC Address Window Table 23 lists the parameters appeared in the MAC Address window.
Section III: Web Browser Management PARAMETER DESCRIPTION View all multicast MAC addresses View all the multicast MAC addresses that have been assigned to the module. View by Module & Port View any MAC addresses that have been assigned to a particular module and port. View by VLAN ID View any MAC addresses that have been assigned to a VLAN ID. View Port & Module number of MAC Address View the port, module number, and VLAN ID where a MAC Address is assigned to. 4.
AT-S25 Management Software User’s Guide PARAMETER DESCRIPTION VLAN ID The VID of the VLAN to which the port is an untagged member. TYPE The MAC address type. The type can be either static or dynamic.
Section III: Web Browser Management Adding Static and Multicast MAC Addresses This section contains the procedure for assigning static address to the ports on the switch. You could assign up to 255 static MAC addresses per port. To add a static address to the MAC Menu, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 2. 3. From the Layer 2 page, select the MAC Address tab.
AT-S25 Management Software User’s Guide Deleting MAC Addresses To delete a static, dynamic, or multicast MAC address from the switch, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 2. 3. From the Layer 2 page, select the MAC Address tab. The MAC Address window in Figure 108 on page 255 is displayed. 4. Display the MAC addresses on the switch by selecting one of the options.
Section III: Web Browser Management Changing the Aging Time The switch uses the aging time to delete inactive dynamic MAC addresses from the MAC Menu. When the switch detects that no packets have been sent to or received from a particular MAC address in the table after the period specified by the aging time, the switch deletes the address. This prevents the table from becoming full of addresses of nodes that are no longer active. To adjust the aging time, perform the following procedure: 1.
AT-S25 Management Software User’s Guide 3. In the MAC address aging time text box, enter the new value in seconds. The default setting for the aging time is 300 seconds (5 minutes). 4. Click Apply to accept the new value of the MAC address aging time.
Chapter 24 Class of Service This chapter contains instructions on how to configure CoS. This chapter contains the following procedure: ❑ Configuring CoS on page 263 Note For background information on CoS, refer to Class of Service Overview on page 162.
AT-S25 Management Software User’s Guide Configuring CoS To configure CoS, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 2. 3. From the Layer 2 page, select the COS tab. A graphical image of an AT-8316F or an AT-8324 Fast Ethernet Switch is displayed. 4. Click the port where you wish to configure the CoS. You could select only one port at a time. A selected port turns white. (To deselect a port, click it again.) 5. Click Modify.
Section III: Web Browser Management Table 25 lists the parameters appeared in the COS Setting window. Table 25 COS Setting Parameters PARAMETER DESCRIPTION Port VLAN ID Select the port VLAN ID. Priority Specify which priority level queue all tagged and untagged frames received on the port go to. Possible settings for this parameter are: • Level 0 (Low) - Low priority queue.
Chapter 25 IGMP Snooping This chapter describes how to configure the IGMP snooping feature on the stack. Note For background information on this feature, refer to IGMP Snooping Overview on page 167.
Section III: Web Browser Management Configuring IGMP Snooping To configure IGMP snooping from a web browser management interface, perform the following procedure: 1. From the Home page, select Configuration. The Configuration window is displayed with the System menu option selected by default. 2. If the System menu option is not selected, select it and then select the IGMP tab. The IGMP window in Figure 113 is displayed. Figure 113 Configuration - IGMP Window 3. Adjust the IGMP parameters as necessary.
AT-S25 Management Software User’s Guide PARAMATER Multicast Host Topology DESCRIPTION Defines whether there is only one host node per stack port or multiple host nodes per port. Possible settings for this parameter are: • Single-Host/Port (Edge) is appropriate when there is only one host node connected to each port on the stack.
Section III: Web Browser Management PARAMATER Maximum Multicast Groups DESCRIPTION Specifies the maximum number of multicast groups the stack will learn. The range is 1 to 2048 groups. The default is 255 multicast groups. This parameter is useful with networks that contain a large number of multicast groups. You could use the parameter to prevent the stack’s MAC Address Table from filling up with multicast addresses, leaving no room for dynamic or static MAC addresses.
AT-S25 Management Software User’s Guide Displaying a List of Host Nodes and Multicast Routers You could use the AT-S25 software to display a list of the multicast groups on a stack, as well as the host nodes. You could also view the multicast routers. A multicast router is a router that is receiving multicast packets from a multicast application and transmitting the packets to host nodes. To view host nodes and multicast routers, perform the following procedure: 1. From the Home Page, select Monitoring.
Section III: Web Browser Management The View Multicast Hosts List window in Figure 115 is displayed. Figure 115 View Multicast Hosts List Window Table 26 lists the parameters appeared in the Multicast Hosts List window. These parameters are for viewing purposes only. Table 26 View Multicast Hosts List Parameters PARAMATER DESCRIPTION Multicast Group The multicast address of the group. VLAN ID The VID of the VLAN in which the port is an untagged member. Module The selected module.
AT-S25 Management Software User’s Guide 4. To view the multicast routers, click View Multicast Routers List and then click View. The View Multicast Routers List window in Figure 116 is displayed. Figure 116 View Multicast Routers List Window Table 27 lists the parameters appeared in the View Multicast Routers List window. These parameters are for viewing purposes only. Table 27 View Multicast Routers List Parameters PARAMATER DESCRIPTION Module The selected module.
Appendix A AT-S25 Default Settings This appendix lists the AT-S25 factory default settings. Settings Default IP Address 0.0.0.0 Subnet Mask 255.255.0.0 Gateway Address 0.0.0.
AT-S25 Management Software User’s Guide Settings IGMP Snooping Status Topology Host/Router Time-out Interval Maximum Multicast Groups Management Interface Manager Login Name (web browser interface only) Manager Password Operator Login Name (web browser interface only) Operator Password Time Out Value Twisted Pair Ports Status Duplex Mode Speed Flow Control Broadcast Packets Security VLANs Default VLAN Name VID Basic VLAN Mode Management Access Telnet SNMP TFTP RS-232 Port Data Bits Stop Bits Parity Flow Co
Index A aging time changing, 160, 260 defined, 148 AT-8316F/MT Ethernet switch port groups, 69, 79 AT-8324 Ethernet switch port groups, 69, 79 AT-S25 default settings, 56, 205, 272 AT-S25 software security, 50 AT-S25 software updates downloading from a local session, 17, 181, 186 AT-S25 version number, 58 Automatic port security level, 68 Auto-Negotiation, 209 B Basic VLAN mode defined, 129 setting, 252 bootloader version number, 58 BOOTP activating, 17, 46, 198 defined, 46 bridge identifier, 94 bridge pri
AT-S25 Management Software User’s Guide M MAC address table, 146, 255 management access levels, 51 Management Information Base (MIB), 31 management VLAN, 143 Manager access, 51 Manager password, 51 MIBs, supported, 31 multicast groups, maximum, 171, 268 multicast MAC address adding, 159, 258 deleting, 157, 259 multicast router, displaying, 173, 269 O Operator access, 51 Operator password, 51 P password changing, 44, 196 default, 36, 38, 50, 190 pinging, 49, 204 port configuring parameters, 60, 207 disable,
Index Telnet management interface defined, 29 quitting, 39 starting, 38 TFTP, downloading and uploading files, 17, 181, 186 To 64 U user name, default, 36, 38, 50, 190 V version number, AT-S25, 58 virtual LAN creating, 130, 243 defined, 118 deleting all, 140 deleting, 138, 247 displaying, 137, 248 mode, changing, 252 modifying, 134, 245 port-based, defined, 120 tagged, defined, 125 VLAN.
