Management Software ® AT-S41 ◆ User’s Guide FOR THE AT-8350GB FAST ETHERNET SWITCH VERSION 1.
Copyright 2002 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 Preface ....................................................................................................................................................................................................................10 How This Guide is Organized .......................
Telnet Management Session ............................................................................................................................................................................32 Starting a Telnet Management Session .............................................................................................................................................. 32 Quitting from a Telnet Management Session.......................................................................................
Chapter 10 Virtual LANs ..........................................................................................................................................................................................................88 VLAN Overview .....................................................................................................................................................................................................89 VLAN Modes ..........................................................
Chapter 17 Management Software Updates ............................................................................................................................................................. 145 Obtaining Software Updates ........................................................................................................................................................................ 146 Downloading New Management Software Using XModem ..............................................................
Chapter 25 Virtual LANs ....................................................................................................................................................................................................... 197 Creating a VLAN ................................................................................................................................................................................................. 198 Phase 1 ..............................................................
List of Figures Figure 1: Connecting a Terminal or PC to the RS232 Terminal Port ................................................................................................. 29 Figure 2: AT-S41 Login Prompt - Local Management Session ............................................................................................................ 30 Figure 3: AT-S41 Main Menu - Local Management Session ..........................................................................................................
Figure 38: HyperTerminal Menu ................................................................................................................................................................. Figure 39: Receive File Pop-up Window .................................................................................................................................................. Figure 40: Receive Filename Pop-up Window .............................................................................................
Preface This guide contains instructions on how configure the AT-8350GB Fast Ethernet switch using the AT-S41 management software. How This Guide is Organized This manual is divided into three sections. Section I: Overview This section reviews the different ways that you can access the AT-S41 management software and describes the stacking features of the AT8350GB switch.
AT-S41 User’s Guide 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-S41 User’s Guide Where to Find Web-based Guides The Allied Telesyn Web site at www.alliedtelesyn.com contains PDF files of the Installation and User Guides for all Allied Telesyn products. The documents can be viewed online or downloaded onto a local workstation or server.
AT-S41 User’s Guide Contacting Allied Telesyn Technical Support You can contact Allied Telesyn technical support online or by telephone. Online Support Telephone Support You can request technical support online by accessing the Knowledge Base from our Web site at http://kb.alliedtelesyn.com. You can use the Knowledge Base to submit questions to our technical support staff and review answers to previously asked questions.
AT-S41 User’s Guide For Sales or Corporate Information Allied Telesyn, Inc.
AT-S41 User’s Guide Management Software Updates Allied Telesyn periodically updates the management software programs for our managed products. You can download new versions of our management software from our Web site at www.alliedtelesyn.com or from our FTP server at ftp.alliedtelesyn.com. To use the FTP server, enter ‘anonymous’ for the user name when you log in and use your e-mail address for the password.
Section I Overview The chapters in this section provide an overview of the AT-S41 management software on the AT-8350GB Fast Ethernet switch. They review the different methods for accessing the management software and describe the stacking features of the switch.
Chapter 1 Management Software Overview The AT-S41 management software is intended for the AT-8350GB Fast Ethernet switch. The software allows you to adjust the operating parameters of the switch.
AT-S41 User’s Guide There are four different types of management sessions that you can use to access the AT-S41 management software on an AT-8350GB Fast Ethernet switch. They are: ❑ Local Management ❑ Telnet ❑ Web Browser ❑ SNMP This chapter briefly describes each type of management session.
AT-S41 User’s Guide Local Management Session You establish a local management session with an AT-8350GB Fast Ethernet switch by connecting either a terminal or a PC with a terminal emulator program to the RS232 terminal port on the front panel of the master switch, using a null-modem cable. This type of management session is referred to as “local” because you must be physically close to the switch, such as in the wiring closet where the switch is located.
AT-S41 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-8350GB Fast Ethernet switch. In this guide, a Telnet management session is referred to as a remote management session because you can manage the switch from any workstation on your network that has the application protocol. You do not have to be physically near the switch.
AT-S41 User’s Guide Web Browser Management Session You can also use a Web browser to manage a switch. This is another type of remote management, just as a Telnet management session is considered remote, because any workstation on your network that has a Web browser can be used to manage an AT-8350GB stack. Note For instructions on starting a Web browser management session, refer to Starting a Web Browser Management Session on page 154.
AT-S41 User’s Guide SNMP Management Session Another way to remotely manage an AT-8350GB switch is with an SNMP management program, such as HP Openview. A familiarity with Management Information Base (MIB) objects is necessary to manage a switch with an SNMP management program, as this management method requires loading the AT-8350GB Fast Ethernet switch MIBs into the SNMP management program. For instructions, refer to your SNMP management documentation.
Chapter 2 Stacking This chapter explains the stacking features of the AT-8350GB switch.
AT-S41 User’s Guide Stacking Overview The stacking feature can make it easier for you to manage the AT8350GB switches in your network. It offers the following benefits: ❑ You can manage up to three AT-8350GB switches from one local or remote management session. All of the switches in a stack can be managed through one management session with the master switch of the stack. This eliminates the need to initiate a separate management session for each switch in your network.
AT-S41 User’s Guide Stacking and the Management Software If you are using the stacking feature of the AT-8350GB switch, the first thing that you should do before you perform any of the procedures in this guide is check to be sure that you are configuring the correct AT8350GB switch in the stack. The Stack ID of the switch being managed is displayed at the top of most of the management menus. When you start a management session on the master switch, you are by default addressing that particular switch.
Section II Local and Telnet Management The chapters in this section explain how to manage an AT-8350GB Fast Ethernet switch from a local or Telnet management session.
Chapter 3 Starting a Local or Telnet Management Session This chapter contains the procedures for starting local and Telnet management sessions on an AT-8350GB Fast Ethernet switch.
AT-S41 User’s Guide Local Management Session There is an RS232 terminal port on the back panel of the AT-8350GB switch. Use this port to establish a local management session with the switch’s AT-S41 management software. A local management session is so named because you must be close to the switch, usually within a few meters, to start this type of management session. This typically means that you must be in the wiring closet where the switch is located.
AT-S41 User’s Guide Starting a Local Management Session To start a local management session, perform the following procedure: 1. Connect one end of the null modem management cable included with the switch to the RS232 Terminal Port on the master switch of the stack.) STA CK OU T RS2 32 Figure 1 Connecting a Terminal or PC to the RS232 Terminal Port 2. Connect the other end of the cable to an RS232 port on a terminal or a PC with a terminal emulation program. 3.
AT-S41 User’s Guide Note These are the default settings for the RS232 terminal port. They are for a DEC VT100 or ANSI terminal, or an equivalent terminal emulation program. When the terminal session starts, it displays the management software’s login prompt, as shown below. AT-8350GB Management System Version 1.00F Local - Console Allied Telesyn International Corp.
AT-S41 User’s Guide Quitting from a Local Session To quit a local session, return to the Main Menu and type Q for Quit. You should always exit from a management session when you are finished managing a switch. This can prevent unauthorized individuals from making changes to a switch’s configuration should you leave your management station unattended. Note You cannot operate both a local management session and a Telnet management session on the same stack simultaneously.
AT-S41 User’s Guide Telnet Management Session You can use the Telnet application protocol from a workstation on your network to manage an AT-8350GB stack. This type of management is referred to as remote management because you do not have to be physically close to the stack to start the session, such as with a local management session. Any workstation on your network that has the Telnet application protocol can be used to manage a stack.
Chapter 4 Basic Switch Parameters This chapter contains a variety of information and procedures. It contains information about when to assign an IP address to a switch, resetting the switch, using the switch’s default settings, and more.
AT-S41 User’s Guide When Does an AT-8350GB Switch Need an IP Address? One of your first tasks as you begin to build your network will be to determine which of the switches in your network should be assigned unique IP addresses. AT-8350GB Switch Every AT-8350GB stack in your network that you want to manage remotely using the Telnet application protocol, a Web browser, or an SNMP management program must have a unique IP address.
AT-S41 User’s Guide Configuring an IP Address The procedure in this section explains how to manually assign an IP address, subnet mask, and gateway address to an AT-8350GB stack from a local or Telnet management session. If the stack is to obtain its IP configuration from a DHCP server on your network, go to the procedure Activating DHCP on page 42. To manually set a stack’s IP address, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. 2.
AT-S41 User’s Guide Subnet [M]ask This command specifies a subnet mask for the stack. Default [G]ateway Address This command specifies the default router’s IP address. This address is required if you intend to remotely manage the stack from a management station that is separated from the stack by a router. Enable/Disable [D]HCP Mode This command allows you to enable and disable DHCP mode. To learn more about DHCP mode, see Activating DHCP on page 42.
AT-S41 User’s Guide Configuring System Administration Information The procedure in this section explains how to assign a name to the stack, along with other optional information, such as the name of the administrator responsible for maintaining the stack and the location of the stack. To set the administration information, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. 2.
AT-S41 User’s Guide Set System [L]ocation This command specifies the location of the stack, such as the building number and wiring closet number. This parameter is optional and may contain up to 50 characters. Set System [C]ontact Information This command allows you to specify the name of the network administrator responsible for managing the stack. This parameter is optional and may contain up to 50 characters.
AT-S41 User’s Guide Configuring the User Interface Security Features The procedure in this section explains how to set the AT-S41 user interface security features, including idle timeouts. It also explains how to enable and disable the different management session options and how to change the login user name and password. To configure a stack’s user interface security features, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. 2.
AT-S41 User’s Guide system while configuring a stack. The default for the console timeout value is 5 minutes.You can set the timeout for between 0 and 60 minutes. Set [T]elnet UI Timeout This command causes the management software to automatically end a Telnet management session if it does not detect any activity from the remote management station after the specified period of time.
AT-S41 User’s Guide Enable/Disable [W]eb Server This command allows you to disable the Web browser management feature on the stack, and so prevent individuals from managing the stack remotely using a Web browser.
AT-S41 User’s Guide Activating DHCP This application protocol was developed to simplify network management. It is used to automatically assign IP configuration information such as an IP address, subnet mask, and, in some instances, a default gateway address to the devices on your network. An AT-8350GB stack supports this protocol and can obtain its IP configuration information from a DHCP server on your network.
AT-S41 User’s Guide Configuring SNMP Community Strings and Trap IP Addresses To configure the SNMP community strings for the stack and to assign up to four IP addresses of management stations to receive traps from the stack, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. 2. From the Basic Switch Configuration Menu, type N to select SNMP Configuration. The SNMP Configuration Menu is displayed in Figure 7.
AT-S41 User’s Guide Enable/Disable SNMP [T]rap Receiver This command specifies the status of a trap receiver. This parameter can be set to E for enable or D to disable. [A]dd SNMP Trap Receiver This command allows you to add an SNMP trap receiver. The range is set of 1 to 4. [D]elete SNMP Trap Receiver This command deletes a specified SNMP trap receiver. [E]nable/Disable Authentication Trap This command specifies a community’s trap authentication. This parameter can be set to E for enable or D to disable.
AT-S41 User’s Guide Rebooting a Switch To reboot a switch, perform the following procedure: 1. From the Main Menu, type T to select Switch Tools. 2. From the Switch Tools Configuration Menu, type R to select System Reboot. The System Reboot Menu is displayed in Figure 8.
AT-S41 User’s Guide Activating the Management Software’s Default Values The procedure in this section returns all management parameters in a stack to their default values. This procedure also deletes any VLANs that you have created in the stack. Note The management software default values can be found in Appendix A, AT-S41 Default Settings on page 232. To return the management software to its default settings, perform the following procedure: 1. From the Main Menu, type T to select Switch Tools. 2.
AT-S41 User’s Guide Are you sure you want to reboot the system (Y/N) -> 6. Type Y for yes or N for no. If you type Y for yes, the stack settings are reset to the factory default values and the stack reboots. Caution The stack will not forward traffic during the brief period required to reload its operating software. Some data traffic may be lost.
AT-S41 User’s Guide Viewing the AT-S41 Switch Information The procedure in this section explains how to display general information about the stack, including: ❑ Administration information ❑ Bootcode version number ❑ Hardware information ❑ System information, including MAC address To display the stack information, perform the following procedure: 1. From the Main Menu, type G to select General Information. The General Information Menu is displayed in Figure 10.
AT-S41 User’s Guide Pinging a Network Device This procedure explains how to instruct the stack to ping a network device. This procedure is useful in determining if there is a valid link between the stack and an end node. To instruct the stack to ping a network device, perform the following procedure: 1. From the Main Menu, type T to select Switch Tools. 2. From the Switch Tools Configuration Menu, type P to select Ping Execution. The Ping Execution Menu is displayed in Figure 11.
AT-S41 User’s Guide Set [T]imeout Value The length of time for which the switch will continue to send pings if it does not receive a response. The default timeout setting is 3 seconds. 4. Select one of the two ping test options by typing the corresponding bracketed letter: Execute Ping or Stop Ping. [E]xecute Ping Starts the ping process and displays ping test results. Also allows you to clean out the ping test configuration cache by typing C for Clean Ping Data.
AT-S41 User’s Guide Bootstrap Configuration The bootstrap feature allows you to download new software and configuration settings when you power on or reset the stack. To configure the bootstrap settings on the stack, perform the following procedure: 1. From the Main Menu, type T to select Switch Tools. 2. From the Switch Tools Configuration Menu, type B to select Bootstrap Configuration. The Bootstrap Configuration Menu is displayed in Figure 13.
AT-S41 User’s Guide Remote If you choose the remote boot load mode, the stack downloads software from a TFTP server and boots using the newly downloaded management software. Set Boot [M]ode If you are using the remote boot load mode, you need to specify how the stack should download the new management software. There are two boot mode options: DHCP and TFTP.
Chapter 5 Port Parameters This chapter contains procedures for viewing and changing the parameter settings for the individual ports on a stack.
AT-S41 User’s Guide Configuring Port Parameters To configure the parameter settings for a port on the stack, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. 2. From the Basic Switch Configuration Menu, type P to select Port Configuration. The Port Configuration Menu is displayed in Figure 14.
AT-S41 User’s Guide Type The port types. Ports 1-48 are 10/100Base-TX and can operate at 10/100 Mbps. Ports 49-50 are 1000Base-TX and can operate at 10/100/1000 Mbps. Link The status of the link between the port and the end node connected to the port. Possible values 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. Status The current operating status of the port.
AT-S41 User’s Guide Possible values are: Enabled - The port is allowed to use flow control. This is the default setting for all of the ports on the stack. Disabled - The port is not configured to use flow control. Port status, mode, and flow control can be configured from the Port Configuration Menu. 3. To configure port status, type S to select the Set Status option. The following prompt is displayed: Set Status-> Enter port number> Port number is in range of 1 to 50, 0 to set all ports.
AT-S41 User’s Guide Configuring Gigabit Port Type Ports 49 and 50 can operate as either GBIC ports or as 10/100/1000 Mbps twisted pair ports. The default port type setting is twisted pair. In order to change the use of these ports from one type to another, the port type must be changed in the AT-S41 management software. To configure the gigabit port type, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. 2.
AT-S41 User’s Guide 6. Enter your selection. Type G to make the port a GBIC port or T to make the port a twisted pair port. The port type change is displayed immediately in the Select Giga Port Type Menu. Note When a gigabit port has been set to operate as a GBIC port instead of a twisted pair port, the port mode setting cannot be changed in the Port Configuration Menu. The GBIC port is in a forced 1000 Mbps full-duplex mode.
Chapter 6 Port Security This chapter contains the procedures for setting port security.
AT-S41 User’s Guide Port Security Overview The port security feature can enhance the security of your network. You can use the feature to control the number of MAC addresses learned on the ports, and so control the number of network devices that can forward frames through the stack. An AT-8350GB stack has three levels of port security: Normal (default), Limited, and Secure. You can set the security level on a per port basis. The security levels are briefly described below.
AT-S41 User’s Guide The MAC aging time is disabled under this security level. The dynamic MAC addresses learned on a port and added to the MAC address table remain in the table and are never purged, even when the end nodes are inactive.
AT-S41 User’s Guide Configuring Port Security To set a port’s security level, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. 2. From the Advanced Switch Configuration Menu, type P to select Port Security Configuration. The Port Security Configuration Menu is displayed in Figure 16.
AT-S41 User’s Guide 6. Select the desired security level. ❑ To disable security on the port, type N to select Normal mode. This is the default security setting. A port operating in Normal mode does not have any restrictions on the number of MAC addresses it can learn. The port continues to learn addresses until it reaches the 254 address maximum of MAC address table. ❑ To specify a maximum number of dynamic MAC addresses each port can learn, type L to select Limited mode.
AT-S41 User’s Guide Setting a Threshold The Limited security mode lets you set a maximum number of dynamic MAC addresses a port on a switch can learn. Once the maximum number of MAC addresses have been learned by a port, frames with new source MAC addresses are discarded and are not forwarded by the port. Static MAC addresses are not included in the count of the maximum MAC addresses a port can learn.
AT-S41 User’s Guide Setting Intrusion Detection The Limited and Secure security modes let you determine how the switch responds when it receives MAC addresses in excess of its threshold. 1. Perform the procedure Configuring Port Security on page 62. 2. Type D to select Set Intrusion Detection. The following prompt is displayed: Set intrusion detection status->Enter port number > Port number is in range of 1 to 50 3. Enter the number of the port to configure. Press Enter.
Chapter 7 Port Trunking This chapter contains the procedures for configuring port trunks.
AT-S41 User’s Guide Port Trunking Overview Port trunking is an economical way for you to increase the bandwidth between two Ethernet switches. A port trunk can consist of up to four 10/100 Mbps ports or two 10/100/1000 Mbps ports that have been grouped together to function as one logical path. A port trunk increases the bandwidth between switches and can be useful in situations where a single physical data link between switches is insufficient to handle the traffic load.
AT-S41 User’s Guide automatically disabled and the speed/duplex mode is automatically set to 100Mbps full-duplex for Ports 1-48 and 1000Mbps full-duplex for Ports 49-50. ❑ If you create a VLAN with ports that are port of a port trunk, the other port members of the port trunk are automatically added to the VLAN. ❑ When cabling a trunk, the order of the connections should be maintained on both nodes.
AT-S41 User’s Guide The example in Figure 19 shows a port trunk of four data links between an AT-8350GB switch and an AT-8326GB switch.
AT-S41 User’s Guide Creating a Port Trunk This section contains the procedure for creating a port trunk on a stack. Be sure to review the guidelines in the Port Trunking Overview on page 67 before performing this procedure. Caution Do not connect the cables to the trunk ports on the stack until after you have configured the trunk with the management software. Connecting the cables before configuring the software will create a loop in your network topology.
AT-S41 User’s Guide 4. From the Trunk Configuration Menu, type A to select Add Trunk Member. The following prompt is displayed: Enter trunk group number-> 5. Enter the port trunk group containing the ports you want to use in the trunk. The following prompt is displayed: Enter port members (up to 4 ports) for trunk 1> 6. Enter the ports that will constitute the port trunk.You can specify the ports individually (e.g., 1,2,3,4) or as a range (e.g., 7-10). Press Enter.
AT-S41 User’s Guide Deleting a Port Trunk Caution Disconnect the cables from the port trunk on the switch before performing the following procedure. Removing a port trunk without first disconnecting the cables can create loops in your network topology. Data loops can result in broadcast storms and poor network performance. To delete a port trunk, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. 2.
AT-S41 User’s Guide Setting Port Trunk Status To enable or disable a port trunk, perform the following procedure: 1. From the Main Menu, type A to select the Advanced Switch Configuration Menu. 2. From the Advanced Switch Configuration Menu, type T to select the Trunk Configuration Menu. 3. Type I to select the Select Stack ID command and specify the switch in the stack where you want to set port trunk status. 4. From the Trunk Configuration Menu, type S to select Set Trunk Status.
Chapter 8 Port Monitoring This chapter contains the procedures for configuring port monitoring.
AT-S41 User’s Guide Port Monitoring Overview The port monitoring feature allows you to unobtrusively monitor the traffic being received and transmitted on a port on the switch by having the traffic copied to another switch port. You can connect a network analyzer to the port functioning as the monitoring port to monitor the traffic without impacting network performance or speed. Observe the following guidelines when configuring port monitoring: ❑ You can monitor only one port on a switch at a time.
AT-S41 User’s Guide Enabling Port Monitoring To enable port monitoring, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. 2. From the Advanced Switch Configuration Menu, type M to select Port Monitoring Configuration. The Port Monitoring Configuration Menu is displayed in Figure 21.
AT-S41 User’s Guide 5. Type M to select Set Monitored Port. The following prompt is displayed: Set monitored port->Enter port number> 6. Enter the number of the port whose traffic is to be monitored. The default monitored port is Port 1. You can specify only one port to be monitored. Press Enter. The port number you have just entered is displayed under the Monitored Port heading on the Port Monitoring Configuration Menu. 7. Type E to select Enable/Disable Port Monitoring.
AT-S41 User’s Guide Modifying Port Monitoring To modify the port monitoring configuration, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. 2. From the Advanced Switch Configuration Menu, type M to select Port Monitoring Configuration. The Port Monitoring Configuration Menu is displayed, as shown in in Figure 21. 3. To change the monitoring port, type S to select Set Monitoring Port.
AT-S41 User’s Guide Disabling Port Monitoring To disable port monitoring, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. 2. From the Advanced Switch Configuration Menu, type M to select Port Monitoring Configuration. The Port Mirroring Menu is displayed, as shown in Figure 21 on page 76. 3. Type E to select Enable/Disable Port Monitoring. The following prompt is displayed: Enable or Disable monitoring (E/D)> 4. Type D for Disable. 5.
Chapter 9 Spanning Tree Protocol This chapter provides introductory information on the Spanning Tree Protocol (STP) and explains how to adjust the STP bridge and port parameters. The sections in this chapter include: ❑ STP Overview on page 81 ❑ Configuring a Bridge’s STP Settings on page 84 ❑ Configuring STP Port Settings on page 86 Note For detailed information on the Spanning Tree Protocol, refer to Section 4 of IEEE Std 802.1D, ISO/IEC 10038: 1993.
AT-S41 User’s Guide STP Overview The AT-8350GB Fast Ethernet switch supports the Spanning Tree Protocol, as specified in the IEEE 802.1D standard. STP can be an important part of large networks where loops, either planned or unplanned, exist in the network topology. A loop exists when two or more nodes on your network can transmit data to each other over more than one data link. A network loop can pose a danger to network performance and operability.
AT-S41 User’s Guide Finding and Resolving Redundant Paths 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.
AT-S41 User’s Guide It might take time for the root bridge to notify all bridges that a topology change has occurred, especially if it is a large network. If a topology change is made before all bridges have been notified, a temporary data loop could occur, and that could adversely impact network performance.
AT-S41 User’s Guide Configuring a Bridge’s STP Settings This section contains the procedure for configuring a bridge’s STP settings. Caution STP on a bridge is disabled by default. If you enable STP, 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. 1.
AT-S41 User’s Guide Enable/Disable [S]TP Enables and disables STP on the switch. The default setting is disabled. Set Bridge Pr[i]ority The priority number for the bridge. This number is used in determining the root bridge for STP. The bridge with the lowest priority number is selected as the root bridge. If two or more bridges have the same priority value, the bridge with the numerically lowest MAC address becomes the root bridge.
AT-S41 User’s Guide Configuring STP Port Settings To configure the STP port parameters, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. 2. From the Basic Switch Configuration Menu, type S to select Spanning Tree Configuration. 3. From the Spanning Tree Configuration Menu, type P to select Spanning Tree Port Configuration. The Spanning Tree Port Configuration Menu is displayed in Figure 23.
AT-S41 User’s Guide Set Path [C]ost Sets the cost parameter used in deciding which port provides the lowest cost path to the root bridge for that LAN. The range is 1 to 65535. Set [T]runk Priority Sets the parameter used as a tie breaker when two or more trunk groups are determined to have equal costs to the root bridge. The default value for priority is 128. The range is 0-255.
Chapter 10 Virtual LANs This chapter contains basic information about virtual LANs (VLANs). It also contains the procedures for creating, modifying, and deleting VLANs from a local or Telnet management session.
AT-S41 User’s Guide VLAN Overview A VLAN is a group of ports on an Ethernet switch that forms a logical Ethernet segment. A VLAN can consist of all the ports on an Ethernet switch or just a few ports. A VLAN can also span switches and consist of ports from multiple Ethernet switches and stacks.
AT-S41 User’s Guide employee changed departments, changing the employee’s LAN segment assignment might require a change to the wiring at the switches. But with VLANS, you can change the LAN segment assignment of an end node connected to the switch through the switch’s AT-S41 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.
AT-S41 User’s Guide VLAN Modifiers The parts that make up a VLAN are: ❑ VLAN name ❑ VLAN Identifier ❑ Untagged ports ❑ Tagged ports ❑ Port VLAN Identifier VLAN Name Every VLAN in your network should be given a name. The name should reflect the function of the network devices that are be members of the VLAN. Examples include Sales, Production, and Engineering. VLAN Identifier Each VLAN in a network must be assigned a number. This number is called the VLAN identifier (VID).
AT-S41 User’s Guide In a VLAN that consists of only untagged ports, port membership is determined by what is referred to as the port VLAN identifier (PVID). This is a number that you must assign to a port to make it an untagged member of a VLAN. The PVID of a port will be the same as the VID of the VLAN in which the port is to be an untagged member. You can assign each port only one PVID. Consequently, a port can be an untagged member of only one VLAN at a time. Here is an example.
AT-S41 User’s Guide Tagged Ports The second type of port that can be a member of a VLAN is called a tagged port. There are several principal differences between a tagged port and an untagged port. As explained earlier, a switch determines the VLAN membership of a frame received on an untagged port by examining the PVID that you assigned to the port. But when a frame is received on a tagged port, the switch examines the frame itself to determine VLAN membership.
AT-S41 User’s Guide A VLAN that contains only tagged frames or that contains a combination of tagged and untagged ports is referred to as a tagged VLAN. And, as explained previously, any device that you connect to a tagged port of a tagged VLAN must be IEEE 802.1Q-compliant. General Rules to Creating a VLAN Below are general rules to observe when creating a VLAN. ❑ An AT-8350GB switch can support up to256 port-based and tagged VLANS. ❑ Each VLAN must be assigned a unique VID.
AT-S41 User’s Guide Creating a VLAN The procedure for creating a new VLAN is divided into the following phases: ❑ Phase 1: Assigning a VID and name and specifying the port members ❑ Phase 2: Converting tagged ports into untagged ports Performing Phase 1 is required whenever you create a new VLAN. Every VLAN should have a name, VID, and ports. You will need to perform Phase 2 if some or all of the ports of a VLAN will be untagged ports or if you want to creat a port-based VLAN.
AT-S41 User’s Guide 3. From the VLAN Management Menu, select C for Create VLAN. The VLAN Creation Menu is displayed in Figure 25.
AT-S41 User’s Guide The name should reflect the function of the end nodes that will be a part of the VLAN (for example, Sales or Accounting). The name can contain spaces but not special characters, such as asterisks (*) or exclamation points (!). The name can contain up to 32 characters. If the VLAN will be unique in your network, then the name should be unique as well.
AT-S41 User’s Guide 1. From the VLAN Creation Menu, type Q to select Quit to Previous Menu. The VLAN Management Menu is displayed again. 2. Type S to select Set Port Config. The VLAN Port Configuration Menu is displayed in Figure 26.
AT-S41 User’s Guide 5. Enter the port number whose PVID you want to change. A prompt similar to the following is displayed: Enter PVID for port 1> 6. Enter the new PVID for the port. Once a new PVID has been assigned to a port, the port is an untagged member of that VLAN and only that VLAN. If the port is also an tagged member of any VLANs, it remains as a tagged member of those VLANs. 7. Repeat Steps 3 to 6 to assign new PVIDs to any other ports that are to be untagged members of the new VLAN. 8.
AT-S41 User’s Guide Viewing or Modifying a VLAN There are two phases to modifying a VLAN. You might need to perform both phases or just one of them, depending on what it is you want to change in the VLAN. The phases are: ❑ Phase 1: In this phase, you can view a VLAN’s configuration, as well as change a VLAN’s name and add or remove tagged ports. ❑ Phase 2: In this phase, you can add or remove untagged ports. Phase 1 This phase explains how to display the Config VLAN Member Menu of a VLAN.
AT-S41 User’s Guide The Config VLAN Member Menu for the VLAN is displayed, as shown in Figure 27. This menu contains all the current information about the VLAN.
AT-S41 User’s Guide a. Type I to choose Select Stack ID and enter the stack ID of the switch containing ports that you want to add or remove from the VLAN. b. To add tagged ports to the VLAN, type A and then specify the ports that you want to add as tagged ports to the VLAN. You can specify the ports individually (e.g., 2,3,5), as a range (e.g., 7-9), or both (e.g., 2,5,7-9). Press Enter. c. To remove tagged ports from a VLAN, type R and specify the tagged ports that you want to remove. Press Enter.
AT-S41 User’s Guide This menu lists the ports on the switch and each port’s current PVID assignment. For example, referring to the figure above, Ports 1 to 8 on the switch all have a PVID of 1, meaning that they are untagged members of the Default VLAN, which has a VID of 1. The menu, when initially displayed, lists the PVIDs for the ports on the master switch of the stack. 4.
AT-S41 User’s Guide Deleting a VLAN To delete a VLAN, perform the following procedure: 1. From the Main Menu, type A to select the Advanced Switch Configuration Menu. 2. From the Advanced Switch Configuration Menu, type V to select VLAN Management. 3. From the VLAN Management Menu, select D for Delete VLAN. 4. At the command prompt, enter the VLAN ID of the VLAN you would like to delete. Press Enter. The VLAN is removed from the switch.
AT-S41 User’s Guide Setting GVRP Status To set the GVRP status, perform the following procedure: 1. From the Main Menu, type A to select the Advanced Switch Configuration Menu. 2. From the Advanced Switch Configuration Menu, type V to select VLAN Management. 3. From the VLAN Management Menu, select G for Set GVRP Status. The following prompt is displayed: Enable or Disable GVRP status (E/D)> E for Enable; D for Disable Type E to select Enable. The default setting is Disabled.
AT-S41 User’s Guide Resetting the VLAN Parameters to Default This command deletes all VLANs that you created. All ports are returned back to the Default VLAN. To reset the default VLAN parameters of the switch, perform the following procedure: 1. From the Main Menu, type A to select the Advanced Switch Configuration Menu. 2. From the Advanced Switch Configuration Menu, type V to select VLAN Management. 3. From the VLAN Management Menu, select R for Reset VLAN to Default.
Chapter 11 MAC Address Table This chapter contains the procedures for viewing the MAC address table.
AT-S41 User’s Guide MAC Address Overview Every hardware device on your network has a unique MAC address. This address is assigned to the device by the device’s manufacturer. For example, when you install a network interface card (NIC) in a computer so that you can connect it to the network, the NIC already has a MAC address assigned to it by its manufacturer. The AT-8350GB Fast Ethernet switch contains an 8 kilobyte entry MAC address table.
AT-S41 User’s Guide on which the packet was received. This prevents packets from being forwarded onto inappropriate LAN segments and increases network security. When the destination node responds, the switch adds its MAC address and port number to the table. 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.
AT-S41 User’s Guide Displaying MAC Addresses To display the MAC address table, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. 2. From the Basic Switch Configuration Menu, type F to select Forwarding Database. The Forwarding Database Menu is displayed in Figure 29.
AT-S41 User’s Guide The management software displays the MAC addresses based on your selection. Figure 30 is an example of the Display MAC Address by MAC option, which displays both static and dynamic MAC addresses. AT-8350GB Local Management System Forwarding Database Menu -> Display MAC Address by MAC Age-Out Time: 300 Sec.
AT-S41 User’s Guide Viewing MAC Addresses by Port This section contains the procedure for viewing the dynamic MAC addresses that have been learned on a particular port. You can also use this procedure to view any static MAC addresses that have been assigned to a port. 1. From the Main Menu, type B to select Basic Switch Configuration. 2. From the Basic Switch Configuration Menu, type F to select Forwarding Database. 3. From the Forwarding Database Menu, type P to select View MAC Addresses by Port.
AT-S41 User’s Guide Viewing the MAC Addresses by MAC This section contains the procedure for viewing the dynamic MAC addresses that have been learned on the ports of a switch. The MAC addresses are displayed in numerical order. This procedure will also let you view all static MAC addresses that have been assigned to the ports on the switch. To view the MAC addresses on the switch in numerical order, perform the following procedure. 1. From the Main Menu, type B to select Basic Switch Configuration. 2.
AT-S41 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.
AT-S41 User’s Guide Adding Static MAC Addresses The management software allows you to assign up to 256 static MAC addresses on an AT-8350GB Fast Ethernet switch. To add a static address to the MAC address table, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. 2. From the Basic Switch Configuration Menu, type F to select Forwarding Database. 3. From the Forwarding Database Menu, type S to select Static Address Table. 4.
AT-S41 User’s Guide Deleting Static MAC Addresses To delete a static MAC address, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. 2. From the Basic Switch Configuration Menu, type F to select Forwarding Database. 3. From the Forwarding Database menu, type S to select Static Address Table. 4. From the Static Address Table Menu, type D to Delete Entry. The following prompt is displayed: Enter MAC Address(xx:xx:xx:xx:xx:xx) > 5.
AT-S41 User’s Guide Changing the Aging Time The switch uses the aging time to delete inactive dynamic MAC addresses from the MAC address table. When the switch detects that no packets have been 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. The default setting for the aging time is 300 seconds (5 minutes).
Chapter 12 Quality of Service This chapter contains the procedures for configuring the Quality of Service (QoS) feature of the AT-S41 software.
AT-S41 User’s Guide Quality of Service Overview The AT-8350GB switch supports QoS as specified in the IEEE 802.1p and 802.1Q standards. QoS 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 QoS, network traffic was handled in a best-effort manner. File transfer delays did occur, but were mostly transparent to network users.
AT-S41 User’s Guide Configuring QoS To configure QoS on the switch, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. 2. From the Advanced Switch Configuration Menu, type S to select Quality of Service Configuration. The Quality of Service Configuration Menu is displayed in Figure 31.
AT-S41 User’s Guide 6. Enter a traffic class. The following prompt is displayed, where X equals the traffic class specified in the last step. Enter queue for traffic class X> Queue is in range of 0 to 1 7. Enter a priority queue (0 - 1). Note The default setting for traffic classes 0 - 3 is the low priority queue. The default setting for traffic classes 4 - 7 is the high priority queue. All tagged frames will be directed to either the low or high priority queue as specified.
Chapter 13 IGMP Snooping This chapter explains how to activate and configure the IGMP snooping feature on the switch.
AT-S41 User’s Guide IGMP Snooping Overview The Internet Group Management Protocol (IGMP) enables routers to create lists of end nodes that want to receive multicast packets from a multicast application. The router creates a multicast membership list by periodically sending out queries to the local area networks connected to its ports. An end node wanting to become a member of a particular multicast group responds to a query by sending a report.
AT-S41 User’s Guide Activating IGMP Snooping To enable or disable IGMP snooping on the switch and to configure IGMP snooping parameters, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. 2. From the Advanced Switch Configuration Menu, type I to select the IGMP Snooping Configuration. The IGMP Configuration Menu is displayed in Figure 32.
AT-S41 User’s Guide This parameter also specifies the time interval used by the switch in determining whether a multicast router is still active. The switch makes the determination by watching for queries from the router. If the switch does not detect any queries from a multicast router during the specified time interval, it assumes that the router is no longer active on the port. [V]iew Group Members Allows you to display a list of the group members of each multicast group on a switch. 3.
AT-S41 User’s Guide Viewing Group Members You can use the AT-S41 software to display a list of the members of each multicast group on a switch. To display the list, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. 2. From the Advanced Switch Configuration Menu, type I to select the IGMP Snooping Configuration. 3. From the IGMP Configuration Menu, type V to select View Group Members. The following prompt is displayed: Enter VLAN ID> 4.
AT-S41 User’s Guide Group Members The port(s) on the switch to which one or more host nodes of the multicast group are connected. VLAN ID The VLAN ID of the VLAN the multicast group belongs to.
Chapter 14 Broadcast Storm Control This chapter contains the procedures for configuring the broadcast storm control feature of the AT-S41 management software.
AT-S41 User’s Guide Broadcast Storm Control Overview Most frames on an Ethernet network are unicast frames. A node sending a unicast frame intends the frame for a particular node on the network. For example, when a node needs to send a file to a network server for storage, the node sends the file in unicast Ethernet frames containing the destination address of the server where the file is to be stored. Broadcast frames are different.
AT-S41 User’s Guide Activating Broadcast Storm Control To activate the Broadcast Storm Control feature for the switch, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. 2. From the Basic Switch Configuration Menu, type C to select Storm Control Configuration. The Storm Configuration Menu is displayed in Figure 34.
Chapter 15 Port Statistics This chapter contains the procedure for displaying data traffic statistics.
AT-S41 User’s Guide Displaying Port Statistics To display Ethernet port statistics, perform the following procedure: 1. From the Main Menu, type S to select Statistics. The Statistics Menu is displayed in Figure 35. AT-8350GB Local Management System Main Menu -> Statistics Menu Stack ID: 1 Port: 1 Elapsed Time Since System Up: 000:02:37:12
AT-S41 User’s Guide The information in the Statistics Menu is for viewing purposes only. The statistics are defined below: Total RX Bytes Number of bytes received on the port. Total RX Packets Number of packets received on the port. Good Broadcast Number of valid broadcast packets received on the port. Good Multicast Number of valid multicast packets received on the port.
Chapter 16 Configuration File A configuration file is a file that contains all of the existing configurations and settings for a switch. You can upload the configuration file and modify the switch settings and then download the configuration file back to the switch or onto multiple switches that you want to have the same configurations. The switch(es) will then update their configuration(s) based on the settings in the configuration file.
AT-S41 User’s Guide Uploading a Configuration File Using XModem This section contains the procedure for uploading a configuration file from a switch using XModem in a local management session. The procedure takes approximately 7 to 10 minutes to complete. Note You cannot perform this procedure from a Telnet or Web browser management session. Caution The switch will not forward Ethernet traffic during the configuration upload/download process.
AT-S41 User’s Guide The XModem Configuration File Upload/Download Menu is displayed in Figure 37. AT-8350GB Local Management System Configuration File Upload/Download -> XModem Configuration File Upload/Download Baud Rate : 9600bps ---------------------- -----------------------[U]pload Configuration File [D]ownload Configuration File [Q]uit to previous menu Command> Enter the character in square brackets to select option Figure 37 XModem Configuration File Upload/Download Menu 4.
AT-S41 User’s Guide The Receive File pop-up window is displayed in Figure 39. Figure 39 Receive File Pop-up Window 8. Click the Browse button on the Receive File window to specify the target location of the configuration file. 9. Click on the Protocol field and set to 1K Xmodem transfer protocol. 10. Click Receive. The Receive Filename pop-up window will appear as displayed in Figure 40. Figure 40 Receive Filename Pop-up Window 11. Type in the filename and click OK.
AT-S41 User’s Guide The XModem File Receive window is displayed in Figure 41. Figure 41 XModem File Receive Window The configuration file uploading process will take a few minutes.
AT-S41 User’s Guide Downloading a Configuration File Using XModem This section contains the procedure for downloading a configuration file to a switch using XModem in a local management session. The procedure takes approximately 7 to 10 minutes to complete. Note You cannot perform this procedure from a Telnet or Web browser management session. Caution The switch will not forward Ethernet traffic during the configuration upload/download process.
AT-S41 User’s Guide The XModem Configuration File Upload/Download Menu is displayed in Figure 43. AT-8350GB Local Management System Configuration File Upload/Download -> XModem Configuration File Upload/Download Baud Rate : 9600bps ---------------------- -----------------------[U]pload Configuration File [D]ownload Configuration File [Q]uit to previous menu Command> Enter the character in square brackets to select option Figure 43 XModem Configuration File Upload/Download Menu 4.
AT-S41 User’s Guide The Send File pop-up window is displayed in Figure 45. Figure 45 Send File Pop-up Window 8. Click the Browse button on the Send File window to specify the target location of the configuration file. 9. Click on the Protocol field and set to 1K Xmodem transfer protocol. 10. Click Send. The switch immediately begins to download the configuration file from the server. As this process begins, the XModem Send File window displays current status of the configuration file download.
AT-S41 User’s Guide Uploading/Downloading a Configuration File Using TFTP TFTP software is available from various sources and is included in SNMP which can be purchased through Allied Telesyn. A command line version is included in most UNIX variants and in Windows NT. Please consult the documentation or the manufacturer of the software used on the proper use of the software.
AT-S41 User’s Guide The TFTP Configuration File Upload/Download Menu is displayed in Figure 48. AT-8350GB Local Management System Configuration File Upload/Download -> TFTP Configuration File Upload/Download TFTP Server IP: Config File Name: Retry Count: 0.0.0.
AT-S41 User’s Guide 6. Open the TFTP client software and select the target directory for the configuration file. 7. Return to the TFTP Configuration File Upload/Download Menu as displayed in Figure 48. 8. Type U to upload or D to download the configuration file. The configuration file upload or download process will take a few minutes.
Chapter 17 Management Software Updates This chapter explains how to obtain new versions of the AT-S41 management software and how to download the software onto an AT-8350GB switch.
AT-S41 User’s Guide Obtaining Software Updates New releases of the AT-S41 management software are available from the Allied Telesyn web site at www.alliedtelesyn.com and from our FTP server at ftp.alliedtelesyn.com. To log on to the FTP server, enter “anonymous” for the user name and your email address for the password. Management software for the AT-8350GB switch will have “S41” as part of the file name.
AT-S41 User’s Guide Downloading New Management Software Using XModem This section contains the procedure for downloading a new version of AT-S41 management software onto a switch from a local management session. The procedure takes approximately 7 to 10 minutes to complete. Note You cannot perform this procedure from a Telnet or Web browser management session. Caution The switch will not forward Ethernet traffic during the software download and initialization process.
AT-S41 User’s Guide The XModem Software Upgrade Menu is displayed in Figure 49. AT-8350GB Local Management System Enter the character in square brackets to select option Software Upgrade -> XModem Software Upgrade Menu Image Version/Date: 1.
AT-S41 User’s Guide The Send File pop-up window is displayed in Figure 51. Figure 51 Send File Pop-up Window 8. Click the Browse button on the Send File window to specify the location of the software. 9. Click on the Protocol field and set to 1K Xmodem transfer protocol. 10. Click Send. The software immediately begins to download onto the switch’s CPU. As this process begins, the Xmodem File Send window displays current status of the software download.
AT-S41 User’s Guide Downloading a New Management Software Image Using TFTP TFTP software is available from various sources and is included in SNMP which can be purchased through Allied Telesyn. A command line version is included in most UNIX variants and in Windows NT. Please consult the documentation or the manufacturer of the software used on the proper use of the software.
AT-S41 User’s Guide Figure 53 TFTP Software Upgrade Menu You will need to provide the following information when using the TFTP client software to download the AT-S41 software image. The options on the menu are defined below. Set TFTP [S]erver IP Address This is the IP address of the server from which you are downloading the new software. Set Image [F]ile Name The path and filename of the software that is to be downloaded onto the switch. The filename of the software should be “ATS41.img”.
Section III Web Browser Management The chapters in this section explain how to manage an AT-8350GB Fast Ethernet switch using a Web browser.
Chapter 18 Starting a Web Browser Management Session This chapter contains the procedure for starting a management session on an AT-8350GB stack using a Web browser such as Microsoft Internet Explorer or Netscape Navigator.
AT-S41 User’s Guide Starting a Web Browser Management Session This section explains how to start a Web browser management session. Note In order for you to manage an AT-8350GB stack using a Web browser, the switch must have an IP address. Initially assigning an IP address to a switch can only be done through a local management session. For instructions, refer to Configuring an IP Address on page 35. To start a Web browser management session, perform the following procedure: 1. Start your Web browser. 2.
AT-S41 User’s Guide The management software home page will appear, as displayed in Figure 55. Figure 55 Management Software Home Page This is the home page of the management software. The menu tabs are visible at the top of the home page: ❑ General Info ❑ Basic Config ❑ Advanced Config ❑ Tools ❑ Statistics Note A Web browser management session remains active as long as you do not close the browser window.
Chapter 19 Basic Switch Parameters The procedures in this chapter explain how to set the following switch parameters: ❑ Configuring an IP Address on page 157 ❑ Configuring System Administration Information on page 159 ❑ Setting the User Interface Configuration on page 161 ❑ Activating DHCP on page 163 ❑ Configuring SNMP Community Strings and Trap IP Addresses on page 164 ❑ Resetting the Management Software Default Values on page 166 ❑ Rebooting a Switch on page 167 ❑ Viewing the AT-S41 Switch Information
AT-S41 User’s Guide Configuring an IP Address Note For guidelines on when to assign an IP address, subnet address, and gateway address to an AT-8350GB switch, refer to When Does an AT-8350GB Switch Need an IP Address? on page 34. The procedure in this section explains how to manually assign an IP address, subnet mask, and gateway address to the switch, as well as how to enable DHCP.
AT-S41 User’s Guide System MAC Address This parameter specifies the MAC address of the switch. This parameter cannot be changed. System IP Address This parameter specifies the IP address of the switch. You must specify an IP address if you intend to remotely manage the switch using a Web browser, a Telnet utility, or an SNMP management program. System Subnet Mask This parameter specifies the subnet mask for the switch. System Default Gateway This parameter specifies the default router’s IP address.
AT-S41 User’s Guide Configuring System Administration Information The procedure in this section explains how to assign a name to the switch, along with other optional information, such as the name of the administrator responsible for maintaining the unit and the location of the switch. To set a switch’s administration information, perform the following procedure: 1. Click on the Basic Config menu tab and select Admin Config from the sub-menu.
AT-S41 User’s Guide System Name This parameter specifies a name for the switch (for example, Sales). This parameter is optional and may contain up to 50 characters. Note It is advised that you assign each switch a name. The names can help you identify the various switches when you manage them and can help you avoid performing configuration procedures on the wrong switch. System Location This parameter specifies the location of the switch. This parameter is optional and may contain up to 50 characters.
AT-S41 User’s Guide Setting the User Interface Configuration The procedure in this section explains how to set the user interface or security features of the switch, including idle timeouts and how to enable and disable the different management session options. To set a switch’s user interface configuration, perform the following procedure: 1. Click on the Basic Config menu tab and select User Interface from the sub-menu. The User Interface page is displayed, as shown in Figure 58.
AT-S41 User’s Guide Telnet UI Idle Timeout This parameter causes the management software to automatically end a management session if it does not detect any activity from the remote management station after the specified period of time. This security feature can prevent unauthorized individuals from using your management station should you step away from your system while configuring a switch. The default for the Telnet timeout value is 5 minutes. You can set the timeout for between 0 and 60 minutes.
AT-S41 User’s Guide Activating DHCP This application protocol was developed to simplify network management. It is used to automatically assign IP configuration information to the devices on your network, such as an IP address, subnet mask, and, in some instances, a default gateway address. The AT-8350GB Fast Ethernet switch supports this protocol and can obtain its IP configuration information from a DHCP server on your network.
AT-S41 User’s Guide 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. Click on the Basic Config menu tab and select SNMP Config from the sub-menu. The SNMP Configuration page is displayed, as shown in Figure 59. Figure 59 SNMP Configuration Page 2. Adjust the parameters as desired.
AT-S41 User’s Guide SNMP Write Community This command specifies the SNMP write community name. The maximum length for a read community name is 20 characters. This parameter is private. Enable/Disable Authentication Trap This command specifies a community’s trap authentication. SNMP Trap Receivers: IP Address Allows you to add up to four SNMP trap receivers. SNMP Trap Receivers: Community Allows you to add a community name for each SNMP trap receiver.
AT-S41 User’s Guide Resetting the Management Software Default Values The procedure in this section returns all management parameters to their default values. This procedure also deletes any VLANs that you have created on the switch. Note The management software default values can be found in Appendix A, AT-S41 Default Settings on page 232. To return the management software to its default settings, perform the following procedure: 1. Click on the Tools menu tab and select System Reboot from the submenu.
AT-S41 User’s Guide Rebooting a Switch To reboot a switch, perform the following procedure: 1. Click on the Tools menu tab and select System Reboot from the submenu. The System Reboot Configuration page will be displayed, as shown in Figure 61. Figure 61 System Reboot Configuration 2. Select a Reboot Status of Start from the pull-down menu. The Reboot Status default setting is Stop. 3. Select a Reboot type from the pull-down menu.
AT-S41 User’s Guide Viewing the AT-S41 Switch Information The procedure in this section explains how to display general information about the switch. To display the switch information, perform the following procedure: 1. Click on the General Info menu tab and select Switch Info from the sub-menu. The Switch Information page will be displayed, as shown in Figure 62. Figure 62 Switch Information Page There are not any configuration options on this page; it is for informational purposes only.
AT-S41 User’s Guide Ping Execution To configure the ping execution settings on the switch, perform the following procedure: 1. Click on the Tools menu tab and select Ping from the sub-menu. The Ping Test Configuration page is displayed, as shown in Figure 63. Figure 63 Ping Test Configuration Page 2. Adjust the parameters as desired. To change a value, enter the new information in the data entry field. The parameters are described below.
AT-S41 User’s Guide The Ping Test Result page is displayed, as shown in Figure 64. Figure 64 Ping Test Result Page The parameters cannot be modified on this page. They are for informational purposes only. The parameters are described below. Destination IP Address This is the IP address you entered on the Ping Test Configuration page. Pass Number of successful pings. Average Time Average length of time for each ping request. 5. Use the Back to Ping Test link to return to the Ping Test Configuration page.
AT-S41 User’s Guide Bootstrap Configuration The bootstrap feature allows you to download new software and configuration settings when you boot up the switch. To configure the bootstrap settings on the switch, perform the following procedure: 1. Click on the Tools menu tab and select Bootstrap from the sub-menu. The Bootstrap Configuration page is displayed, as shown in Figure 65. Figure 65 Bootstrap Configuration Page 2. Adjust the parameters as desired.
AT-S41 User’s Guide Remote If you choose the remote boot load mode, the switch downloads software from a TFTP server and boots using the newly downloaded management software. Load Mode If you are using the remote boot load mode, you need to specify how the switch should download the new management software. There are two boot mode options: DHCP and TFTP.
Chapter 20 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 can adjust include duplex mode and port speed.
AT-S41 User’s Guide Configuring Port Parameters To configure the parameter settings for a port on a switch, perform the following procedure: 1. Click on the Basic Config menu tab and select Port Config from the sub-menu. Choose Port Config again in the next sub-menu. The Port Configuration page will appear, as displayed in Figure 66. Figure 66 Port Configuration Page 2. Adjust the port parameter(s) that you want to configure. You can configure the parameters for only one port at a time.
AT-S41 User’s Guide Type The port types. Ports 1-48 are 10/100Base-TX and can operate at 10/100 Mbps. Ports 49-50 are 1000Base-TX and can operate at 10/100/1000 Mbps. Link Status The status of the link between the port and the end node connected to the port. Possible values 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. Admin. Status The current operating status of the port.
AT-S41 User’s Guide Enabled - The port is allowed to use flow control. This is the default setting for all of the ports on the switch. Disabled - The port is not configured to use flow control. 3. Once you have made the desired changes, click the Apply button.The switch immediately activates the parameter changes on the port.
AT-S41 User’s Guide Configuring Gigabit Port Type Ports 49 and 50 can operate as either GBIC ports or 10/100/1000 Mbps twisted pair ports. The default port type setting is twisted pair. In order to change the use of these ports from one type to the other, the port type must be changed in the AT-S41 management software. To configure a gigabit port type, perform the following procedure: 1. Click on the Basic Config menu tab and select Port Config from the sub-menu.
AT-S41 User’s Guide Displaying Port Status The procedure in this section displays the operating status of the ports on a switch. To display the status of a switch port, perform the following procedure: 1. Click on the General Info menu tab and select Front Panel from the sub-menu. The Front Panel page will appear, as displayed in Figure 68. Figure 68 Front Panel Page This page displays a graphical image of the front of the switch. Ports with valid links to end nodes have a green light. 2. Click on a port.
AT-S41 User’s Guide If you select a port, the Configuration of Port page is displayed, as shown in Figure 69. Figure 69 Configuration of a Port This page displays the port’s configuration and operating status. Set the port parameters as desired and click the Apply button. The parameters are described below. Port Type The port type. Ports 1-48 are 10/100Base-TX and can operate at 10/100 Mbps. Ports 49-50 are 1000Base-TX and can operate at 10/100/1000 Mbps.
AT-S41 User’s Guide You might want to disable a port and prevent packets from being forwarded if a problem occurs with the node or cable connected to the port. Once the problem has been fixed, you can enable the port to resume normal operation. You can also disable an unused port to secure it from unauthorized connections. Possible values are: Enabled - The port is able to send and receive Ethernet frames. This is the default setting for all of the ports on the switch.
AT-S41 User’s Guide Displaying Port Statistics The procedure in this section displays the statistics of a port on a switch. To display the statistics of a port, perform the following procedure: 1. Click on the Statistics menu tab. The Statistics page will appear, as displayed in Figure 70. Figure 70 Statistics 2. To view the statistics for a port, select a port from the Select Port pulldown menu. 3. Click the Apply button. The information on the Statistics page is for viewing purposes only.
AT-S41 User’s Guide Good Multicast Number of valid multicast packets received on the port. CRC/Align Errors Number of packets with a cyclic redundancy check (CRC) error but with the proper length (64-1518 bytes) received on the port. Undersize Packets Number of packets that were less than the minimum length specified by IEEE 802.3 (64 bytes including the CRC) received on the port. Oversize Packets Number of packets exceeding the maximum specified by IEEE 802.
Chapter 21 Port Security This chapter explains how to configure port security. Note For background information on port security, refer to the Port Security Overview on page 60.
AT-S41 User’s Guide Configuring Port Security To configure the switch’s port security, perform the following procedure: 1. Click on the Advanced Config menu tab and select Port Security from the sub-menu. Choose Security Config from the next sub-menu. The Port Security page will appear, as displayed in Figure 71. Figure 71 Port Security Page 2. Select the Stack ID for the switch whose port security you want to configure from the Stack ID pull-down menu.
AT-S41 User’s Guide 4. If you selected the Limit security mode, you can set a threshold or specific limit on the maximum number of dynamic MAC addresses the port can learn. The threshold is automatically set to 1 until you change it in the Threshold data entry field. Enter the number of dynamic MAC addresses (between 1 and 170) you want the port to be able to learn. Note A threshold cannot be set for the port if the Security Mode is set to Normal or Secure.
AT-S41 User’s Guide Displaying Port Security Settings To view the switch’s port security settings, perform the following procedure: 1. Click on the Advanced Config menu tab and select Port Security from the sub-menu. Choose Security Overview from the next sub-menu. 2. The Port Security Overview page will appear, as displayed in Figure 72, allowing you to see the security settings for all of the ports on a switch. Figure 72 Port Security Overview Page 3.
Chapter 22 Port Trunks This chapter contains the procedures for creating or deleting a port trunk using a Web browser management session. Note For background information on port trunking, refer to the Port Trunking Overview on page 67.
AT-S41 User’s Guide Creating or Deleting 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. Loops can result in broadcast storms, which can adversely effect the operations of your network. If you are deleting a port trunk, disconnect the cables from the ports before you delete the trunk.
AT-S41 User’s Guide If the switch does not contain a port trunk, all of the ports on the switch will be un-checked. If there is a port trunk, the ports of the trunk will be checked. 2. To create a port trunk, do the following: a. Check the ports that will make up the port trunk. A port trunk can contain up to four ports. All of the ports in a port trunk must be in the same trunk group. b. Select Enable from the pull-down menu to the right of the trunk group that contains the port trunk members. c.
Chapter 23 Port Monitoring This chapter contains the procedure for enabling and disabling port monitoring. Note For background information on port monitoring, refer to Port Monitoring Overview on page 75.
AT-S41 User’s Guide Configuring Port Monitoring To enable or disable port monitoring, perform the following procedure: 1. Click on the Advanced Config menu tab and select Port Monitoring from the sub-menu. The Port Monitoring Configuration page will appear, as displayed in Figure 74. Figure 74 Port Monitoring Configuration Page 2. To configure port monitoring, do the following: a. Use the Monitoring Port pull-down menus to select the port to function as the port monitor and the stack ID for that port. b.
Chapter 24 Spanning Tree Protocol This chapter explains how to configure the STP bridge parameters on an AT-8350GB Fast Ethernet switch from a Web browser management session. Sections in the chapter include: ❑ Configuring a Bridge’s STP Settings on page 193 ❑ Configuring STP Port Settings on page 195 Note For background information on STP, refer to the STP Overview on page 81.
AT-S41 User’s Guide Configuring a Bridge’s STP Settings Caution STP on a bridge is disabled by default. If you enable STP, 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. To configure a bridge’s STP parameters, perform the following procedure: 1.
AT-S41 User’s Guide Bridge Priority The priority number for the bridge. This number is used in determining the root bridge for STP. The bridge with the lowest priority number is selected as the root bridge. If two or more bridges have the same priority value, the bridge with the numerically lowest MAC address becomes the root bridge. When a root bridge goes off-line, the bridge with the next priority number automatically takes over as the root bridge.
AT-S41 User’s Guide Configuring STP Port Settings To display and configure the STP settings, perform the following procedure: 1. Click on the Basic Config menu tab and select Spanning Tree from the sub-menu. Choose STP Port Config from the next sub-menu. The Spanning Tree Port Configuration page will appear, as displayed in Figure 76. Figure 76 Spanning Tree Port Configuration 2.
AT-S41 User’s Guide Path Cost The spanning tree algorithm uses the cost parameter to decide which port provides the lowest cost path to the root bridge for that LAN. The default path costs are 10 for the 10/100 Mbps ports and 4 for the 10/100/1000 Mbps ports. The range is 1 to 65535. The following parameters are for display purposes only and cannot be changed from the Spanning Tree Port Configuration Menu. Port Index The port number. All indicates a setting that includes all ports on the switch.
Chapter 25 Virtual LANs This chapter explains how to create, modify, and delete VLANs. Note For background information on VLANs, refer to Chapter 10, Virtual LANs.
AT-S41 User’s Guide Creating a VLAN The procedure for creating a new VLAN is divided into the following phases: ❑ Phase 1: Assigning a VID and name and specifying the port members ❑ Phase 2: Converting tagged ports into untagged ports Performing Phase 1 is required whenever you create a new VLAN. Every VLAN must have a name, VID, and ports. You will need to perform Phase 2 if some or all of the ports of a VLAN will be untagged ports or if you want to create a port-based VLAN.
AT-S41 User’s Guide Phase 1 This phase allows you to assign a VID and a name to your VLAN and also designate the VLAN port members. 1. Click on the Advanced Config menu tab and select VLAN Config from the sub-menu. Select Create VLAN from the next sub-menu. The Create/Modify VLAN page will appear, as displayed in Figure 77. Figure 77 Create/Modify VLAN 2. Enter a VLAN ID in the VLAN ID field. If this VLAN will be unique in your network, then its VID must also be unique from all other VIDs in the network.
AT-S41 User’s Guide If the VLAN will be unique in your network, then the name should be unique as well. If the VLAN will be part of a larger VLAN that spans multiple switches, then the name for the VLAN should be the same on each switch where end nodes of the VLAN are connected. 4. Select the Tagged port radio buttons for both the tagged and untagged ports that are to be members of the new VLAN. Do this for each switch in the stack that will contain ports for the new VLAN.
AT-S41 User’s Guide Phase 2 This phase explains how to convert the tagged ports that you added to the new VLAN into untagged ports. This process involves changing the PVIDs of the ports so that they match the VID of the new VLAN. For example, if you assigned the new VLAN a VID of 4, you must change the PVIDs of the ports you want to be untagged ports in the new VLAN to 4. The following procedure explains how to accomplish this. 1.
AT-S41 User’s Guide For example, if you wanted to make Port 5 an untagged port of a VLAN with a VID of 7, you would change the PVID for Port 5 to the value 7. 4. Click the Apply button. Once a new PVID has been assigned to a port, the port is an untagged member of that VLAN and only that VLAN. If the port is also an tagged member of any VLANs, it remains as a tagged member of those VLANs. 5.
AT-S41 User’s Guide Viewing or Modifying a VLAN There are two phases to modifying a VLAN. You might need to perform both phases or just one, depending on what it is you want to change in the VLAN. The phases are: ❑ Phase 1: In this phase, you can view a VLAN’s configuration, as well as change a VLAN’s name and add or remove tagged ports. ❑ Phase 2: In this phase, you can add or remove untagged ports. Phase 1 This phase explains how to change a VLAN’s name and add or remove tagged ports.
AT-S41 User’s Guide The Create/Modify VLAN page will appear, as displayed in Figure 80. Figure 80 Create/Modify VLAN The rows on the page are defined below: Tagged A selected radio button indicates the corresponding port is a tagged member of the VLAN. Untagged A U in this row indicates that the port is an untagged member of the VLAN. Forbidden A dot in a radio button indicates that the switch will not learn VLANs from the end node connected to the port.
AT-S41 User’s Guide Note You cannot add untagged ports to a VLAN from this page. To add untagged ports, refer to Phase 2, below. 4. If you want to remove a tagged port from the VLAN, click the Not Member radio button of the appropriate port. Note You cannot remove untagged ports from a VLAN from this page. To remove untagged ports, refer to Phase 2, below. 5.
AT-S41 User’s Guide Phase 2 You must perform this phase whenever you need to add or remove an untagged port from a VLAN. This phase explains how to change the PVIDs of the ports so that they match the VID of a different VLAN. For example, if you want to assign Port 2 as an untagged member of a VLAN with a VID of 4, you must change the PVID of the port to 4. 1. Click on the Advanced Config menu tab and select VLAN Config from the sub-menu. Select VLAN Port Config from the next sub-menu.
AT-S41 User’s Guide 4. Click the Apply button. Once a new PVID has been assigned to a port, the port is an untagged member of that VLAN and only that VLAN. If the port is also an tagged member of any VLANs, it remains as a tagged member of those VLANs. 5. Repeat steps 2 and 4 to assign new PVIDs to any other ports in the stack that are to be untagged members of the VLAN. This completes the procedure for modifying a VLAN.
AT-S41 User’s Guide Deleting a VLAN To delete a VLAN, perform the following procedure: 1. Click on the Advanced Config menu tab and select VLAN Config from the sub-menu. Select VLAN Info from the next sub-menu. The VLAN Information page is displayed. This page lists all the VLANs that currently exist in the stack. An example of this page is shown in Figure 79 on page 203. 2. Click the Delete link in the column for the VLAN you want to delete. A confirmation prompt is displayed. 3.
Chapter 26 MAC Address Table This chapter contains instructions on how to view the dynamic and static addresses in the MAC address table of the switch.
AT-S41 User’s Guide Viewing the MAC Address by Port This section contains the procedure for viewing the dynamic MAC addresses that have been learned on a particular port. You can also use this procedure to view any static MAC addresses that have been assigned to a port. 1. Click on the Basic Config menu tab and select Forwarding DB from the sub-menu. Choose Sort by Port from the next sub-menu. The Sort by Port page will appear, as displayed in Figure 82. Figure 82 Sort by Port 2.
AT-S41 User’s Guide Viewing the MAC Addresses by MAC This section contains the procedure for viewing the dynamic MAC addresses that have been learned on the ports of a switch. The MAC addresses are displayed in numerical order. This procedure will also let you view all static MAC addresses that have been assigned to the ports on the switch. To view the MAC addresses on the switch in numerical order, perform the following procedure. 1.
AT-S41 User’s Guide 4. To modify the aging time, enter a value in seconds in the Aging Time field and click the Apply button. The Aging Time setting is in the range of 10 to 1048 seconds. The default setting is 300 seconds. The management software immediately activates the new aging time value on all ports of the switch. For more information on setting the Aging Time, please refer to Changing the Aging Time on page 117.
AT-S41 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 end 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.) Note Viewing MAC addresses by VLAN is not supported in port-based VLAN mode.
AT-S41 User’s Guide 2. Enter the VLAN ID whose static and dynamic MAC addresses you want to view into the VLAN ID field. 3. Click the Apply button next to the VLAN ID field. The management software displays the MAC addresses of the nodes of all ports in the VLAN. 4. To modify the aging time, enter a value in seconds in the Aging Time field and click the Apply button. The Aging setting is in range of 10 to 1048 seconds. The default setting is 300 seconds.
AT-S41 User’s Guide Adding Static MAC Addresses The management software allows you to assign up to 256 static MAC addresses on an AT-8350GB switch. To add a static address to the MAC address table, perform the following procedure: 1. Click on the Basic Config menu tab and select Forwarding DB from the sub-menu. Choose Static FDB from the next sub-menu. The Static MAC Address Configuration page will appear, as displayed in Figure 85. Figure 85 Static MAC Address Configuration 2.
AT-S41 User’s Guide Deleting Static MAC Addresses To delete a static MAC address, perform the following procedure: 1. Click on the Basic Config menu tab and select Forwarding DB from the sub-menu. Choose Static FDB from the next sub-menu. The Static MAC Address Configuration page will appear, as displayed in Figure 86. Figure 86 Static MAC Address Configuration The management software displays all static addresses from the MAC address table. 2.
Chapter 27 Quality of Service This chapter contains instructions on how to configure QoS. This chapter contains the following procedure: ❑ Configuring QoS on page 218 Note For background information on QoS, refer to Quality of Service Overview on page 119.
AT-S41 User’s Guide Configuring QoS Note Quality of Service is not supported in port-based VLAN mode. To configure QoS, perform the following procedure: 1. Click on the Advanced Config menu tab and select Quality of Service from the sub-menu. The Quality of Service page will appear, as displayed in Figure 87. Figure 87 Quality of Service 2. Select a Low or High priority queue for the traffic classes whose priority you wish to change.
Chapter 28 IGMP Snooping This chapter explains how to activate and configure the IGMP snooping feature on the switch. Sections in the chapter include: ❑ Activating IGMP Snooping on page 220 ❑ Viewing Group Members on page 222 Note For background information on this feature, refer to IGMP Snooping on page 122.
AT-S41 User’s Guide Activating IGMP Snooping To enable or disable IGMP snooping on the switch and to configure IGMP snooping parameters, perform the following procedure: 1. Click on the Advanced Config menu tab and select IGMP Snooping from the sub-menu. The IGMP Snooping page will appear, as displayed in Figure 88. Figure 88 IGMP Snooping The parameters on the IGMP Snooping page are defined below: IGMP Snooping Status Enables and disables IGMP snooping on the switch.
AT-S41 User’s Guide VID The VLAN ID of the VLAN the multicast group belongs to. This parameter will only be visible if you have created a VLAN. Multicast Group Address The multicast address of the group. To view the members of the multicast group, click on the multicast address.
AT-S41 User’s Guide Viewing Group Members You can use the AT-S41 software to display a list of the members of each multicast group on a switch. To display the list, perform the following procedure: 1. Click on the Advanced Config menu tab and select IGMP Snooping from the sub-menu. The IGMP Snooping page will appear, as displayed in Figure 88 on page 220. 2. Click on a multicast group address. The group members will appear on the IGMP Snooping Group Members page, as displayed in Figure 89.
Chapter 29 Broadcast Storm Control This chapter contains instructions on how to configure the broadcast storm control feature on the switch. Note For background information on this feature, refer to Broadcast Storm Control on page 128.
AT-S41 User’s Guide Activating Broadcast Storm Control and Setting a Threshold To activate broadcast storm control and set a threshold, perform the following procedure: 1. Click on the Advanced Config menu tab and select Storm Control from the sub-menu. The Broadcast Storm Control page will appear, as displayed in Figure 90. Figure 90 Broadcast Storm Control Page 2. Select Enable from the Storm Control Status pull-down menu. 3. To set the threshold, select an option from the Threshold value pulldown menu.
Chapter 30 Uploading/Downloading Configuration Files This chapter explains how to upload and download configuration files from a Web browser management session using the Trivial File Transfer Protocol.
AT-S41 User’s Guide Uploading/Downloading a Configuration File Using TFTP TFTP software is available from various sources and is included in SNMP which can be purchased through Allied Telesyn. A command line version is included in most UNIX variants and in Windows NT. Please consult the documentation or the manufacturer of the software used on the proper use of the software.
AT-S41 User’s Guide Download/Upload Config File Specifies whether you are uploading or downloading a configuration file. Download Server IP This is the IP address of the server from which you are downloading the configuration file or to which you are uploading the configuration file. Config File Name The path and filename of the configuration file that is to be downloaded onto the switch or uploaded to the server. 2. Select a Upload or Download from the pull-down menu. 3.
Chapter 31 Management Software Updates This chapter explains how to obtain new versions of the AT-S41 management software and how to download the software onto an AT-8350GB switch from a Web browser management session.
AT-S41 User’s Guide Obtaining Software Updates New releases of the AT-S41 management software are available from the Allied Telesyn Web site at www.alliedtelesyn.com and from our FTP server at ftp.alliedtelesyn.com. To log on to the FTP server, enter “anonymous” for the user name and your e-mail address for the password. Management software for the AT-8350GB switch will have “S41” as part of the filename.
AT-S41 User’s Guide Downloading a New Management Software Image Using TFTP TFTP software is available from various sources and is included in SNMP which can be purchased through Allied Telesyn. A command line version is included in most UNIX variants and in Windows NT. Please consult the documentation or the manufacturer of the software used on the proper use of the software.
AT-S41 User’s Guide Image Version/Date The software version and date currently on the switch. File Type ❑ Image An image file is the management software for the switch. ❑ Configuration A configuration file is a file that contains all of the existing configurations and settings for a switch. You can upload the configuration file and modify the switch settings and then download the configuration file back to the switch or onto multiple switches that you want to have the same configurations.
Appendix A AT-S41 Default Settings This appendix lists the AT-S41 factory default settings. Setting Default IP Address Subnet Mask 0.0.0.0 0.0.0.0 Gateway Address DHCP IGMP Snooping System Name MAC Aging Time Spanning Tree Protocol Status Bridge Priority Bridge Max Age Time Bridge Hello Time Bridge Forwarding Delay Twisted Pair Ports Status Duplex Mode Speed Flow Control Broadcast Control MDI/MDI-X Security Port Mirroring 0.0.0.
AT-S41 User’s Guide Setting Default Port Trunking Ports 49 and 50 Port Type (GBIC or Twisted Pair) VLANs 802.
