Management Software ® AT-S26 ◆ User’s Guide FOR USE WITH THE AT-9006T, AT-9006SX/SC, AND AT-9006LX/SC GIGABIT ETHERNET SWITCH PRODUCTS VERSION 2.0.
Copyright 2000 Allied Telesyn International, Corp. 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 International, Corp. CentreCom is a registered trademark of Allied Telesyn International, Corp. Netscape Navigator is a registered trademark of Netscape Communications Corporation.
Table of Contents Table of Contents ................................................................................................................................................................................................. 3 Preface ...................................................................................................................................................................................................................... 9 Supported Platforms ..................................
Chapter 2 Managing a Switch ........................................................................................................................................................................................... 41 Configuring the Switch IP Parameters ......................................................................................................................................................... 42 Setting IP Parameters..............................................................................
AT-S26 Version 2.0.1 User’s Guide Verifying the VLAN Configuration....................................................................................................................................................... 107 Creating an Example VLAN ............................................................................................................................................................................ 108 Phase 1 ...............................................................................
List of Figures Chapter 1 Getting Started Figure 1: Omega Main Menu from a Local Session ..................................................................................................................................24 Figure 2: Entering a Switch’s IP Address in the URL Field ......................................................................................................................28 Figure 3: Initial Omega Window Display from a Web Browser ....................................................
List of Figures Chapter 4 Configuring the MAC Address Table Figure 30: MAC Address Menu ....................................................................................................................................................................... 82 Figure 31: MAC Address Table ........................................................................................................................................................................ 82 Figure 32: MAC Address Table Per Port Window ......
Preface This guide contains instructions on how to use the AT-S26 Version 2.0.1 management software and the Omega management interface to manage and configure your AT-9006T, AT-9006SX/SC, and AT-9006LX/SC Series Gigabit Ethernet Switches. Supported Platforms Version 2.0.1 of the AT-S26 management software is supported on the following Allied Telesyn Gigabit Ethernet switches: ❑ AT-9006T ❑ AT-9006SX/SC ❑ AT-9006LX/SC Version 2.0.
❑ AT-A24/SX 1000Base-SX (MT-RJ) Expansion Module ❑ AT-A24/LX 1000Base-LX (MT-RJ) Expansion Module Note Refer to Appendix C for additional information on the switches and expansion modules supported by this version of the AT-S26 management software.
AT-S26 Version 2.0.1 User’s Guide Purpose of This Guide This guide is intended for network administrators who are responsible for managing the switches. Network administrators should be familiar with Ethernet switches, Ethernet and Fast Ethernet technology, bridging, and the Spanning Tree Protocol (STP).
How This Guide is Organized This guide contains the following chapters and appendices: Chapter 1, Getting Started, explains how to start an Omega session. This chapter also describes the Omega Main Menu and how to navigate around the various menus. Chapter 2, Managing a Switch, describes how to configure the IP parameters for a switch, how to set the spanning tree protocol parameters, and more.
AT-S26 Version 2.0.1 User’s Guide Document Conventions This guide uses several conventions that you should become familiar with first before you begin to install the product. 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.
Where to Find Web-based Guides The Allied Telesyn web site at www.alliedtelesyn.com offers you an easy way to access the most recent documentation and technical information for all of our products. There are several manuals that you will need in order to manage your Ethernet switch. The following manual contains the hardware installation instructions for the switch.
AT-S26 Version 2.0.1 User’s Guide Contacting Allied Telesyn You can contact Allied Telesyn technical support by telephone, fax or e-mail. You can also contact technical support online through our web site. Online Support Technical Support and Services Technical Support E-mail Addresses You can request technical support online by filling out the Online Technical Support Form at www.alliedtelesyn.com/forms/support.htm.
Returning Products Products for return or repair must first be assigned a Return Materials Authorization (RMA) number. A product sent to Allied Telesyn without a RMA number will be returned to the sender at the sender’s expense.
AT-S26 Version 2.0.1 User’s Guide FTP Server If you need a device driver for an Allied Telesyn device and you know the name of the driver, you can download the software by connecting directly to our FTP server at ftp://gateway.centre.com. At login, enter ‘anonymous’. Enter your e-mail address for the password as requested by the server at login.
For Sales or Corporate Information Allied Telesyn International, Corp. 19800 North Creek Parkway, Suite 200 Bothell, WA 98011 Tel: 1 (425) 487-8880 Fax: 1 (425) 489-9191 18 Allied Telesyn International, Corp.
AT-S26 Version 2.0.1 User’s Guide Tell Us What You Think If you have any comments or suggestions on how we might improve this or other Allied Telesyn documents, please fill out the Send Us Feedback Form at www.alliedtelesyn.com/forms/feedback.htm.
Chapter 1 Getting Started This chapter provides an overview of the Omega management interface and contains the different procedures for starting an Omega management session.
Getting Started Overview The Omega interface simplifies the task of managing your Allied Telesyn AT-9006T, AT-9006SX/SC, and AT-9006LX/SC Series Gigabit Ethernet switches. This menu-oriented interface, which comes pre-installed on the switch along with the AT-S26 software, enables you to configure and manage all of the switch parameters, such as the IP address, the gateway address, and the subnet mask of the switch.
AT-S26 Version 2.0.1 User’s Guide Starting a Local Omega Session Using the RS232 Port This section contains the procedure for starting a local Omega session by connecting a terminal to the RS232 port on the switch.
Getting Started Omega Main Menu Figure 1 illustrates the Omega Main Menu. Allied Telesyn AT-9006SX/SC Ethernet Switch 2.0.
AT-S26 Version 2.0.1 User’s Guide Using the Terminal Interface This section explains how to move around the menus using different terminal interfaces.
Getting Started The table below shows you how to move through and select menu selections if you are using a generic (dumb) terminal configuration: When directed You must To select an option Type the first character of the option you want and then press . If two or more options have matching initial characters, type enough characters for Omega to distinguish your choice from the other options; then press . To guide you, the characters you must type are in uppercase.
AT-S26 Version 2.0.1 User’s Guide Quitting from a Local Session To quit a local Omega session, select Quit from the Main Menu. If you do not quit Omega from a local session, remote Telnet sessions to the switch will be blocked.
Getting Started Starting an Omega Session from a Web Browser This section contains the procedure for starting an Omega session from a web browser. Note You cannot use a web browser to manage an AT-9006 switch if the switch is part of a non-TCP/IP network. Before you can manage the switch in a TCP/IP environment with a web browser, the switch must have an IP address and subnet mask. Initially, these two parameters can only be set through the RS232 port on the switch and a local Omega session.
AT-S26 Version 2.0.1 User’s Guide The window shown in Figure 3 is displayed.
Getting Started Managed Switch At the top of the window is a graphical imagge of the switch that you are currently managing. (The display will not include any optional expansion modules that might be installed in the unit.) You can click on different areas of the image to display different Omega windows. Clicking on a port displays the configuration window for that port, which you use to set the port parameters. Clicking on the RS232 port displays the configuration window for the terminal port.
AT-S26 Version 2.0.1 User’s Guide Selecting Menu Options and Changing Parameters Activated options on the switch are preceded with a ! symbol. In the following example, the first option is activated: Figure 5 Active Menu Option Options in which you can provide a value contain an entry field and the two buttons Enter and Reset, as shown in the following example: Figure 6 Entry Field After entering a new value, click Enter or press to send the new parameter setting to the switch.
Getting Started Quitting an Omega Session from a Web Browser 32 To exit from a web-based Omega session, simply quit the browser. Once you start an Omega session through a browser, the session remains active even if you link to other sites. You can return to the Omega web pages anytime as long as you do not quit the browser.
AT-S26 Version 2.0.1 User’s Guide Starting a Remote Omega Session with Telnet or an SNMP Management Program A switch can be managed with the Telnet program or with an SNMP management program, such as HP Openview. This type of switch management is referred to as remote management. If the switch is in a TCP/IP environment, remote management is possible only after the switch has been assigned an IP address and subnet mask. Initially, this is accomplished by managing the switch locally through the RS232 port.
Getting Started Connecting to a Remote Switch If you are managing a switch locally (that is, through the RS232 port on the switch), you can connect to another switch through the Omega interface and so be able to manage the remote switch, without having to end your local session. To connect to a remote switch from a local session, perform the following procedure: 1. From the Omega Main Menu, select Administration. The Administrator menu is displayed. 2. Select Connect to remote system. 3.
AT-S26 Version 2.0.1 User’s Guide Menu Tree Table 1 lists the menu options in the Omega interface. Table 1 Omega Menu Selections Main Menu Selection Menu Selection Page Function 66, 68 Displays and configures the parameter settings for the ports on the switch. Transmit statistics 125 Displays statistics on the number of frames transmitted by a port or the switch. Individual port overview 122, 125 Displays the received and transmitted frame statistics for a specific port.
Getting Started Table 1 Omega Menu Selections (Continued) Main Menu Selection Menu Selection Page Function Activity monitor 61 Displays the activity monitor for the switch. Diagnostics 59 Performs a series of diagnostic tests on the switch. Reset and restart the system 55 Resets the switch. System name 54 Assigns a name to a switch. Default aging time 85 Sets the aging time for the MAC address table.
AT-S26 Version 2.0.1 User’s Guide Table 1 Omega Menu Selections (Continued) Main Menu Selection Menu Selection Page Function Port to VLAN configuration 106, 109, 112 Changes an untagged port’s VID (PVID) number to match the VLAN ID (VID) number. Assign port priority 116 Assigns a port priority to a port on a switch, which can override the tag priority in a frame. Priority Weight configuration 118 Select the priority weight mode for the switch.
Getting Started Table 1 Omega Menu Selections (Continued) Main Menu Selection Menu Selection Page Function Clear static MAC table 89 Clears all entries from the static MAC address table of a switch. The Figure 7 show the menu selection arrangement.
AT-S26 Version 2.0.
Chapter 2 Managing a Switch This chapter contains the following procedures: ❑ Configuring the Switch IP Parameters on page 42 ❑ Configuring the Spanning Tree Protocol on page 47 ❑ Enabling or Disabling IGMP Snooping on page 52 ❑ Naming a Switch on page 54 ❑ Resetting a Switch on page 55 ❑ Reassigning the Default Settings for the Switch on page 56 ❑ Configuring the RS232 Port on page 57 ❑ Running Diagnostics on page 59 ❑ Displaying the Activity Monitor on page 61 ❑ Pinging a Device on page 62 41
Managing a Switch Configuring the Switch IP Parameters If the AT-9006 Series Switch is in a TCP/IP network and you want to manage the switch remotely, such as with a Telnet utility or a web browser, you must assign the switch a set of IP parameters, such as a unique IP address and a subnet mask. You can assign these parameters either one of two ways: ❑ Manually using the Omega interface ❑ Automatically using a BootP or DHCP server.
AT-S26 Version 2.0.1 User’s Guide Setting IP Parameters To set the IP parameters for the switch using the Omega management interface, perform the following procedure: 1. From the Omega Main Menu, select System Configuration. The System Configuration menu shown in Figure 8 is displayed. System Configuration Menu System name Null (not configured) Default Aging Time 300 Omega Options IP parameters Security / Source Address Table Terminal configuration System Switch configurations Return to Main Menu ...
Managing a Switch 3. Enter or change the parameters in the window as desired. Changes to the parameters are activated immediately on the switch. Note If you are configuring the switch for the first time and the switch is in a TCP/IP network, you must assign the switch an IP address and subnet mask. These are the minimum parameters that you must specify for a newly installed Ethernet switch in a TCP/IP network if you intend to manage the switch using Telnet or a web browser.
AT-S26 Version 2.0.1 User’s Guide DHCP Configuration You can use this selection to configure the switch to obtain its IP address from a DHCP server. When you select this option, the prompts in Figure 10 are displayed. > Enable DHCP function Disable DHCP function (This setting will be effective after rebooting system.) Return to IP Parameters Window ... Figure 10 DHCP Selections If you select Enable DHCP function, the switch will obtain its IP address from a DHCP server on the network.
Managing a Switch Config download password This password is used when downloading configuration files from one AT-9006 switch to another switch. The default password is config (all lowercase). The Omega interface displays the password as a series of asterisks. For instructions on how to download a configuration file onto a switch, refer to Chapter 8, Upgrading Switch Software and Configuration Files.
AT-S26 Version 2.0.1 User’s Guide Configuring the Spanning Tree Protocol The Spanning Tree Protocol (STP) prevents data loops when multiple or redundant paths exist in extended LANs. Each switch or bridge in a spanning tree domain will: ❑ Determine the best single route to a destination device. ❑ Update other bridges with topology information by periodically sending Bridge Protocol Data Units (BPDUs).
Managing a Switch Activating or Deactivating STP and Configuring the Port Parameters The Omega program allows you activate and deactivate STP on a per port basis. You can also adjust the STP parameters for each port. To configure the protocol parameters for the individual ports on a switch, perform the following procedure: 1. From the Omega Main Menu, select Bridging. The Bridging menu shown in Figure 11 is displayed.
AT-S26 Version 2.0.1 User’s Guide The STP Port Parameters window in Figure 13 is displayed. Bridge Menu Port 1 Enable Spanning Tree > Disable Spanning tree Return to Previous menu... Figure 13 STP Port Parameters Window If STP is already activated on the port, the port’s STP parameters are also displayed, as shown in Figure 14. Bridge Menu Port 1 > Enable Spanning Tree Disable Spanning Tree Priority: Cost: 128 1 Return to Previous menu... Figure 14 Setting STP Port Parameters Window 5.
Managing a Switch Configuring STP Parameters To configure the STP parameters for the switch, perform the following procedure: 1. From the Omega Main Menu, select Bridging. The Bridging menu in Figure 11 on page 48 is displayed. 2. Select Spanning tree parameters. The Spanning Tree Parameters window in Figure 15 is displayed.
AT-S26 Version 2.0.1 User’s Guide Hello Time Hello time can be from 1 to 10 seconds, with 2 seconds as the default. Bridges use this parameter to determine the time interval between generating and sending configuration messages. Forwarding Delay The default is 15 seconds. The time indicates the waiting period before a bridge changes to a new state, for example, becomes the new root bridge after the topology changes.
Managing a Switch Enabling or Disabling IGMP Snooping The Ethernet switch supports the Internet Group Management Protocol (IGMP) snooping feature to take advantage of performance improvements provided by IP multicasting. Allied Telesyn AT-S26 implementation supports IGMP Version 1. Through the IGMP snooping feature, the switch obtains information about multicast groups by looking at IGMP packets sent from hosts and routers, and also by looking at Distance Vector Multicast Routing Protocol (DVMRP) packets.
AT-S26 Version 2.0.1 User’s Guide 3. From the System Configuration window, select IGMP Snooping Configuration. The IGMP Configuration menu in Figure 17 is displayed. IGMP Snooping Configuration Menu IGMP Snooping > No IGMP Snooping IGMP Snooping Aging Time (Minutes): 5 Return to System Switch Configuration Menu... Figure 17 IGMP Configuration Menu 4. Select IGMP snooping to activate the option or No IGMP snooping to deactivate IGMP snooping. 5.
Managing a Switch Naming a Switch This procedure assigns a name to the switch. The name is displayed in all Omega windows when you manage the switch. This can make it easier for you to identify the switches in your network when you configure and monitor them with Omega. 1. From the Omega Main Menu, select System Configuration. The System Configuration menu shown in Figure 8 on page 43 is displayed. 2. In the System name entry field, enter a unique name of up to 20 characters.
AT-S26 Version 2.0.1 User’s Guide Resetting a Switch This procedure explains how to reset a switch using the Omega interface. You might need to reset the switch to resolve an error condition or after you have made a configuration change to the switch that requires resetting the device to activate the change. You can also reset a switch by pressing the Reset button, located on the front panel of the switch, with a small pointed object, such as a ballpoint pen.
Managing a Switch Reassigning the Default Settings for the Switch This procedure explains how to reset the switch settings to the factory default settings, listed in Appendix A. This procedure can only be performed locally through the RS232 port on the switch. Warning This procedure should be performed with caution. Resetting a switch to its default settings deletes all existing settings, including the IP address of the switch and the port settings.
AT-S26 Version 2.0.1 User’s Guide Configuring the RS232 Port The default settings for the RS232 port on the front panel of the Ethernet switch are as follows: ❑ Baud rate: 9600 ❑ Data bits: 8 ❑ Parity: None ❑ Stop bits: 1 ❑ Flow control: None To change the settings for the RS232 port, perform the following procedure: 1. From the Omega Main Menu, select System Configuration. The System Configuration menu in Figure 8 on page 43 is displayed. 2.
Managing a Switch If you are running the Omega session from a web browser, you can display the Terminal Configuration window by clicking on the RS232 port in the graphical display of the switch. 3. Adjust the settings as desired. The parameters are described below. 8 data bits 7 data bits The default is 8 data bits. 1 stop bit 2 stop bits The default is 1 stop bit. No parity Odd parity Even parity The default is no parity.
AT-S26 Version 2.0.1 User’s Guide Running Diagnostics The Omega interface has an option for running diagnostic self-tests on the switch.
Managing a Switch The tests take only a second or two to complete. The results are displayed in the Diagnostics window. Figure 20 is an example of the window. Allied Telesyn AT-9006SX/SC Ethernet Switch MAC Address 00A0D2 2A0000, Uplink A: Not present, Uplink B: Not present AT-S26 Ethernet Switch Software: Version 2.0.1 000413 Running 15 minutes, 8 seconds Diagnostic Results: Flash PROM RAM Serial Interface System 3.
AT-S26 Version 2.0.1 User’s Guide Displaying the Activity Monitor The Activity Monitor is useful in troubleshooting or in monitoring switch activity. To display the Activity Monitor, perform the following procedure: 1. From the Omega Main Menu, select Administration. 2. From the Administration menu, select Activity monitor. The Activity Monitor for the switch displays. The example shown in Figure 21 shows the results of a ping command. Activity Monitor Pinging: [Host 149.35.17.164, delay 1.000] Ping 149.
Managing a Switch Pinging a Device The ping command allows you to test if an end system can be reached by sending it an Internet control message protocol (ICMP) echo request. If the system is connected to the network and operating, it sends a reply to the requesting system. To ping another device, perform the following procedure: 1. From the Omega Main Menu, select Administration. 2. From the Administration menu, select Ping a remote system. The Ping window in Figure 22 displays.
AT-S26 Version 2.0.1 User’s Guide Performing a ping command from a web-based Omega session stops after a set number of ping attempts. Performing a ping command from a local or remote Omega session continues until you stop it. 4. Return to the Main Menu.
Chapter 3 Configuring the Ports The procedures in this chapter allow you to view and change the parameter settings for the individual ports on a switch. This chapter also describes port trunking, port mirroring, and port security.
Configuring the Ports Displaying Port Status The Port Status window displays the current operating status of all the ports on the switch, including the ports on any expansion modules, if installed. The window allows you to quickly ascertain the operating status of the ports by displaying a variety of information, such as whether a link exists between the ports and the end nodes, and whether any of the ports have been manually disabled.
AT-S26 Version 2.0.1 User’s Guide Status This column indicates whether a port is enabled or disabled. For instructions on how to manually disable or enable a port, refer to the section Configuring Port Parameters on page 68. Mode This column indicates the duplex mode of the ports. Possible values are auto-negotiate, full-duplex, or half-duplex. For instructions on how to manually set the duplex mode of a port, refer to the section Configuring Port Parameters on page 68. 2. Return to the Main Menu.
Configuring the Ports Configuring Port Parameters This section contains the procedure for configuring the parameters for the individual ports on a switch. Port parameters that you can change include duplex mode, flow control, back pressure, and port speed. To view and configure the parameter settings for the ports, perform the following procedure: 1. From the Omega Main Menu, select Port Status and Configuration. The Port Status window in Figure 24 on page 66 is displayed. 2.
AT-S26 Version 2.0.1 User’s Guide Receive Statistics Graph This option displays performance statistics for the port, specifically the number and types of frames and errors that have occurred on the port. For further information on port statistics, refer to Chapter 6, Displaying Ethernet Statistics. This option is not available from a Telnet or local session.
Configuring the Ports Backpressure enabled (half-duplex) No backpressure Backpressure applies only to ports operating in half-duplex mode. Backpressure is useful when the port input buffer is running low on memory resources. In the switch, outbound packets are traversing a single uplink port. When a switch detects that a port input buffer is nearly full, it simulates a collision so that the sending node will defer transmission.
AT-S26 Version 2.0.1 User’s Guide Creating a Port Trunk If your Gigabit Switch contains an expansion module that has multiple 100 Mbps or 10/100 Mbps ports, you can create a port trunk. A port trunk is an economical way for you to increase the bandwidth between the switch and another network device, such as a server, router, workstation, or another switch.
Configuring the Ports Guideline 5: Maintaining Cabling Sequence Based on Port Number When cabling a trunk, it is important that the order of the connections be identical on both nodes. The lowest numbered port in a trunk on one device must be connected to the lowest numbered port of the trunk on the other device, the next lowest numbered port must be connected to the next lowest numbered port on the other device, and so on.
AT-S26 Version 2.0.1 User’s Guide 7. Return to the Main Menu. 8. Connect the port trunks on the switch to the end device, being sure to follow the guidelines discussed earlier in this chapter. Deleting a Port Trunk To delete a port trunk, perform the following procedure. 1. Disconnect the cables from the port trunk on the switch. Caution Disconnect the cables from the port trunk on the switch before you delete the port trunk.
Configuring the Ports Configuring Port Mirroring Port mirroring allows you to monitor the traffic on a port by having both the receive and transmit traffic on a port copied to another port on the switch. By connecting a network analyzer to the other port, you can monitor the traffic. The port to be monitored is referred to as the source port. The port that will function as the mirror port is referred to as the destination port.
AT-S26 Version 2.0.1 User’s Guide 2. Select Enabled. The window in Figure 27 is displayed. Port Mirroring Configuration Port mirroring state: > Enabled Disabled Source port: Destination port: Null (not configured) Null (not configured) Note: Both transmit and receive activity will be mirrored. Return to Main Menu ... Figure 27 Source and Destination Port Mirror Prompts 3. Select Source Port. A window displays listing the ports on the switch. 4. Select the port to be monitored. 5.
Configuring the Ports Configuring Port Security The switch features two levels of port security that you can use to enhance network security. These levels allow you to control network access by limiting the number of MAC addresses that are learned on the ports on the switch. The levels are as follows: Limited - The ports will continue to learn new MAC addresses up to a user defined maximum limit.
AT-S26 Version 2.0.1 User’s Guide Limited This selection activates a limited version of port security. With this level selected, the switch will continue to learn MAC addresses for each port up to a user defined maximum number. Once the maximum number has been reached on a port, any frames received on the port from a source with a new MAC addresses will be discarded. Note Selecting this security level deletes all static MAC addresses. You must reenter the static addresses.
Configuring the Ports Activating this security level requires that you first specify the ports that are to have this level of security. This is done by entering the ports in the Security object port field. The ports can be entered as a range (e.g., 2-5) or individually (e.g., 2,4,6). After specifying the ports, select the Secure level from the Port Security menu. Ports not specified as having the Secure level will default to the Automatic security level.
Chapter 4 Configuring the MAC Address Table This chapter describes the MAC address table and the static MAC address table. The chapter explains how to view the MAC addresses and how to add and delete entries from the static table.
Configuring the MAC Address Table This chapter also contains instructions on how to configure multicast addresses for the ports of a switch.
AT-S26 Version 2.0.1 User’s Guide MAC Address Table The MAC address table (also referred to as the forwarding table) is a snapshot of the source MAC addresses that a switch has learned and stored in its volatile memory. When a frame is received by a port on a switch, the source address of the frame is inspected to determine whether or not the address is already in the table. If it is not, the switch adds the address to the table. Each AT-9006 Series switch maintains its own MAC address table.
Configuring the MAC Address Table Displaying the MAC Address Table To display the MAC address table for a switch, perform the following procedure: 1. From the Omega Main Menu, select MAC Address Table. The MAC Address menu in Figure 30 is displayed.
AT-S26 Version 2.0.1 User’s Guide The table lists each MAC address that the switch has learned, the number or name of the port on which the MAC address was detected, and the VLAN to which the port belongs. The Refresh button queries the switch for the latest MAC address information and updates the window. 3. Return to the Main Menu.
Configuring the MAC Address Table Displaying the Port Number of a MAC Address The Omega interface allows you to determine the port on which a MAC address is located by specifying the address. This feature is useful in determining the port that a particular device is connected to on the switch. To display the port number for a specific MAC address, perform the following procedure: 1. From the Omega Main Menu, select MAC Address Table. 2. Select Get Port From MAC Address.
AT-S26 Version 2.0.1 User’s Guide Clearing All Dynamic MAC Addresses To clear all of the learned MAC addresses from the MAC address table, perform the following procedure: 1. From the Omega Main Menu, select MAC Address Table. 2. Select Clear dynamic MAC table. Confirmation prompts are displayed. 3. Select Yes to clear the table or No to cancel the procedure. If you select Yes, all MAC addresses are deleted from the switch’s dynamic MAC address table. 4. Return to the Main Menu.
Configuring the MAC Address Table Static MAC Address Table The static MAC table contains a list of the MAC addresses that have been entered manually. You can use the table to specify the MAC addresses of devices that are connected to ports that might not be learned via the dynamic learning process of the switch. Entering static MAC addresses ensures that certain devices have access to the switch ports, because aging time, power failures, or switch resets do not affect the static MAC table.
AT-S26 Version 2.0.1 User’s Guide Adding Addresses to the Static MAC Address Table To add MAC addresses to the static MAC address table, perform the following procedure: 1. Compile a list of the MAC addresses of the devices to be added to the table. 2. From the Omega Main Menu, select MAC Address Table. The MAC Address Table menu shown in Figure 30 is displayed. 3. Select Per port static MAC addresses. A list of the ports on the switch is displayed. 4.
Configuring the MAC Address Table 6. In the VLAN Name field, specify the VLAN to which the port belongs. The default is Default VLAN. 7. In the MAC Address field, enter the static MAC address of the device to have access to the port. The address should be entered in the following format: XXXXXX XXXXXX You can configure only one static MAC address per port. A confirmation screen is displayed. 8. Press . The address is added to the static MAC address table. 9. Return to the Main Menu. 10.
AT-S26 Version 2.0.1 User’s Guide 5. In the VLAN Name field, enter the name of the VLAN to which the port belongs. 6. In the MAC Address field, enter the MAC address to be deleted from the static table. A confirmation screen is displayed. 7. Press . The address is deleted from the static MAC address table. 8. Return to the Main Menu. 9. If desired, perform the procedure Displaying the Static MAC Address Table on page 86 to view the updated table.
Configuring the MAC Address Table Multicast Address A multicast is a special form of broadcast where copies of a packet are delivered to a specific group of end stations. This differs from a broadcast, which is a transmission that sends copies of a packet to all end stations on the network. A multicast address is a destination address. Configuring a multicast address allows you to restrict certain packets to a specific group of ports.
AT-S26 Version 2.0.1 User’s Guide 3. Select Add MAC address. The Adding a Multicast Address window in Figure 40 is displayed. Add MAC Address Menu MAC Addresses MAC Address Multicast Packet Ports VLAN Name: MAC address: VLAN Default VLAN Null (not configured) Ports for multicast Null (not configured) (Example: 1,3,8-14, or all) Return to Add MAC Address Menu ... Figure 40 Adding a Multicast Address Window 4. In the VLAN Name field, enter the name of the VLAN to receive the multicast frames.
Configuring the MAC Address Table Changing a Multicast Port Assignment Deleting a Multicast Address To add or remove ports from a multicast MAC address assignment, reenter the multicast MAC address and the new port assignments by performing the instruction in the previous section. This will overwrite the old port assignments with the new port information. To delete a multicast address from the MAC address table, perform the following procedure: 1. From the Omega Main Menu, select MAC Address Table.
Chapter 5 Configuring Virtual LANs and Quality of Service This chapter contains the following sections: ❑ Overview on page 94 ❑ Creating a New Port-based or Tagged VLAN on page 102 ❑ Creating an Example VLAN on page 108 ❑ Modifying a Port-based or Tagged VLAN on page 111 ❑ Deleting a Port-based or Tagged VLAN on page 113 ❑ Configuring Port Priority Queueing on page 116 This chapter explains the Allied Telesyn implementation of the VLAN and Quality of Service (QoS) features for the AT-9006 Ethernet switch.
Configuring Virtual LANs and Quality of Service Overview As the size and traffic on Ethernet networks have grown, new methods have been needed for segmenting the network to improve network performance and speed. One of the principal methods for improving network performance is through the use of VLANs. The VLAN feature allows you to segment your network through software management by creating subnetworks.
AT-S26 Version 2.0.1 User’s Guide Port-Based VLANs Port-based VLANs are logical groupings of ports. Any devices connected to the member ports share a common broadcast domain. The traffic within a VLAN is forwarded only to the member ports. As a frame enters a port, an ID for that port VLAN is associated with the frame. This VLAN ID (VID) is used to forward the frame only to the port or ports in the same VLAN (i.e., ports having the same VID).
Configuring Virtual LANs and Quality of Service The table below lists the ports assignments for the Sales and Production VLANs: Figure 42 VLAN Example Sales VLAN (PVID 2) Production VLAN (PVID 3) AT-9006SX/SC switch 1, 2, 4 3, 5, 6 The movement of traffic between the two VLANs is accomplished with a router. The router has one connection to each VLAN. One router interface is connected to port 2 on the switch; this port is a member of the Sales VLAN.
AT-S26 Version 2.0.1 User’s Guide The ability to allow a port to forward traffic from many VLANs instead of only one (as in port-based VLANs) allows the user to overcome the portbased limitations mentioned above. A server can now be configured to accept the traffic from many different VLANs, and then return data to the various VLANs without mixing or leaking data into the wrong VLANs.
Configuring Virtual LANs and Quality of Service Note Ports can be tagged members of multiple VLANs. This means that the port can be configured to accept and forward traffic flows from multiple VLANs (i.e., the port will recognize multiple VIDs). If the connected device is a legacy device (i.e., a device that does not support or act upon VLAN tagging), there are addition methods for handling the frame.
AT-S26 Version 2.0.1 User’s Guide VLAN Tagging Example Figure 43 illustrates how tagged ports can be used to interconnect IEEE 802.1Q-based products. The example uses tagged ports to provide an uplink between two AT-9006SX/SC switches. A tagged port is also used to connect an IEEE 802.1Q compliant server to a switch so that the server can be shared among multiple VLANs without the need for a router.
Configuring Virtual LANs and Quality of Service The VLANs and port assignments for the top AT-9006SX/SC Gigabit Switch in Figure 43 are listed in Table 2.
AT-S26 Version 2.0.1 User’s Guide The Engineering VLAN on the bottom AT-9006SX/SC switch has two untagged ports and one tagged port, Port 2, which functions as the uplink port to the top switch. The Manufacturing VLAN also consists of two untagged ports. One port is connected to an AT-8224XL switch and the other port is connected to a legacy server, meaning that it is not capable of handing tagged frames and, consequently, cannot be shared by multiple VLANs.
Configuring Virtual LANs and Quality of Service Creating a New Port-based or Tagged VLAN This section contains the procedure for creating a new VLAN on a switch. The procedure for creating a new VLAN consists of three phases: ❑ Phase 1: — Name the VLAN. — Assign a VLAN ID (VID) number to the VLAN. — Designate which ports are to be members of the VLAN. — Define which, if any, ports will be tagged ports. ❑ Phase 2: — Remove the untagged ports from existing VLANs.
AT-S26 Version 2.0.1 User’s Guide 2. Select Virtual LAN definitions. The program displays the VLANs window. This window lists the VLANs currently existing on the switch. The window provides the name of each VLAN along with the ports on the switch that are members of the VLAN. Figure 45 is an example of the window. VLAN Definition Menu page 1 VLAN Name ID All Ports On VLAN Default VLAN Building102 Building103 1 2 3 5,6 1,2 3,4 Add new table entry Return to Virtual LAN Menu ...
Configuring Virtual LANs and Quality of Service 4. In the VLAN Name field, enter a name for the new VLAN (for example, Marketing). Press . After entering the name for the new VLAN, the VLAN ID number should automatically increment to the next available number. For example, if this is the first VLAN that you are adding to the switch, the VID number increments to 2. 5. If desired, change the VLAN ID number by entering a number a number in the ID field.
AT-S26 Version 2.0.1 User’s Guide Phase 2 In Phase 1, you gave the new VLAN a name and specified the ports that will be members of the VLAN. It is important to know, however, that the untagged ports of the new VLAN are not automatically removed from their current VLAN assignment. Instead, you must manually remove them yourself. This involves reconfiguring the existing VLANs by removing untagged ports that are members of the new VLAN. Remember, an untagged port can be a member of only one VLAN at a time.
Configuring Virtual LANs and Quality of Service Phase 3 The final phase to creating a new VLAN involves changing the PVID of each untagged port in the new VLAN to match the VLAN’s VID. To accomplish this, do the following procedure: Note Only the PVID of untagged ports must be changed to match the VID of its respective VLAN. The default PVID of tagged ports should not be changed. 1. From the Omega Main Menu, select Virtual LANs/QoS. 2. Select Port to VLAN configuration.
AT-S26 Version 2.0.1 User’s Guide The VLAN is now configured on the switch. But before you begin to use the VLAN for network operations, it is recommended that you review the information in Verifying the VLAN Configuration on page 107. Verifying the VLAN Configuration Before you begin to use a new VLAN, you should do the following: ❑ Check to be sure that each untagged port belongs to only one VLAN. If an untagged port belongs to more than one VLAN, you must remove the port from one of the VLANs.
Configuring Virtual LANs and Quality of Service Creating an Example VLAN The procedures in this section create the Accounting VLAN in the top AT-9006SX/SC Switch in Figure 43 on page 99. This VLAN will contain ports 1 and 4 as untagged ports and ports 2 and 5 as tagged ports. For the purposes of this example, it will be assumed that the only VLAN currently existing on the switch is the Default VLAN.
AT-S26 Version 2.0.1 User’s Guide Phase 2 Now that you have defined the new Accounting VLAN, you must reconfigure the existing VLANs by removing the untagged ports that you have assigned to the new Accounting VLAN. To accomplish this, perform the following procedure: 1. From the Omega Main Menu, select Virtual LAN/QoS. 2. From the Virtual LAN/QoS menu, select Virtual LAN Definition. 3. Select the Default VLAN. The VLAN window for the Default VLAN is displayed.
Configuring Virtual LANs and Quality of Service 5. Select Accounting. The ports PVID is changed to match the Accounting VLAN’s VID. (With a local or Telnet management session, the Port to VLAN Configuration window is automatically refreshed. With a web-based session, you must refresh the window manually by returning to the Virtual LANs/QoS menu and selecting Port to VLAN configuration.) 6. Select port 4. 7. Select the Accounting VLAN.
AT-S26 Version 2.0.1 User’s Guide Modifying a Port-based or Tagged VLAN This procedure explains how to add or delete ports from an existing port-based or tagged VLAN. You can also change a port from untagged to tagged, or vice versa. To modify a VLAN, perform the following procedures. Phase 1 1. From the Omega Main Menu, select Virtual LANs/QoS. The Virtual LAN/QoS menu shown in Figure 44 on page 102 is displayed. 2. Select Virtual LAN definitions.
Configuring Virtual LANs and Quality of Service Phase 2 If you added one or more untagged ports to the VLAN, you must removed the ports from their current VLAN assignment; otherwise the untagged ports will be members of more than one VLAN. This procedure is explained in Creating a New Port-based or Tagged VLAN, Phase 2 on page 105. If you removed any untagged ports from the VLAN, you must manually reassign them to another VLAN.
AT-S26 Version 2.0.1 User’s Guide Deleting a Port-based or Tagged VLAN Deleting a port-based or tagged VLAN from a switch consists of two procedures. Phase 1 consists of deleting the VLAN. Phase 2 involves assigning the ports in the deleted VLAN to another VLAN. Phase 1 To delete a VLAN, do the following: 1. From the Omega Main Menu, select Virtual LANs/QoS. The Virtual LAN/QoS menu in Figure 44 is displayed. 2. Select Virtual LAN definitions. The VLANs window in Figure 45 on page 103 is displayed. 3.
Configuring Virtual LANs and Quality of Service 6. If you moved the ports back to the Default VLAN, no further steps are required. The VLAN has been deleted and you have reassigned the untagged ports to the Default VLAN. However, if you reassigned the ports to a VLAN other than the Default VLAN, you must perform the additional step of modifying the PVID of the ports to match the VID of their new VLAN.
AT-S26 Version 2.0.1 User’s Guide Assigning the CPU Management Port to a VLAN This section contains the procedure for assigning the CPU management port to a VLAN. By default, the CPU management port is assigned to the Default VLAN. Note This procedure should be performed with caution. The CPU management port must be assigned to the same VLAN that contains the ports on the switch to which your remote management stations are connected.
Configuring Virtual LANs and Quality of Service Configuring Port Priority Queueing The AT-9006 Series Ethernet Switches support the IEEE 802.1p standard and Quality of Service (QoS). QoS can be of importance 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.
AT-S26 Version 2.0.1 User’s Guide The following procedure explains how you can configure the individual ports to either accept or ignore the priority levels in the tagged frames, and, if the latter, which queue the packets are to be assigned, normal or high. To set a port priority level, perform the following procedure: 1. From the Omega Main Menu, select Virtual LANs/QoS. 2. From the Virtual LANs/QoS menu, select Assign Port Priority. The Omega program displays a list of the ports on the selected switch.
Configuring Virtual LANs and Quality of Service Configuring Switch Priority Queuing When a tagged frame enters a port on the switch, the frame is placed in one of two priority queues, normal or high, according to the priority level as specified in the frame or by the port priority level, which you can set. (See the procedure Configuring Port Priority Queueing on page 116 for instructions on configuring a port’s priority level.) Packets in the two queues are handled in a round robin manner.
AT-S26 Version 2.0.1 User’s Guide The window in Figure 50 is displayed. Priority Weight > Mode 1 (High-1 : Normal-1) Mode 2 (High-2 : Normal-1) Mode 3 (High-4 : Normal-1) Mode 4 (High-6 : Normal-1) Mode 5 (High-8 : Normal-1) Mode 6 (High-10 : Normal-1) Mode 7 (High-12 : Normal-1) Mode 8 (All pkt transmit from High, 0pkt from Normal) Return to Virtual LAN Menu ... Figure 50 Priority Weight Configuration Window 3. Select the desired switch priority ratio.
Chapter 6 Displaying Ethernet Statistics The Omega interface allows you to view a wide range of statistics that you can use in monitoring the performance of your network or in diagnosing a problem and isolating it to a specific port. Menu selections enable you to view both received or transmitted frame statistics at either the switch or the port level. You can also view RMON statistics at either the switch or port level.
Displaying Ethernet Statistics Displaying Statistics for Received Frames To display statistics for received frames at either the switch or the port level, perform the following procedure: 1. From the Main Menu, select Ethernet Statistics. The Receive Statistics Graph window for the switch is displayed. Figure 51 is an example of the window.
AT-S26 Version 2.0.1 User’s Guide 3. To clear the graph, select Zero all statistics counters on the entire system. 4. Return to the Main Menu. Table 4 Received Ethernet Frames Frame Type Description Received Good Frames Total number of frames received by the switch since the last reset. Filtered Frames Frames received by the switch but not forwarded because the destination is within the same LAN segment; therefore, the frame was already seen by all nodes on the segment.
Displaying Ethernet Statistics Port 6 Receive Statistics Graph Receive Good Frames: Filtered Frames: Broadcasts: Multicasts: CRC Errors: Undersized Frames: Fragments: Long Frames: 0 0 0 0 0 0 0 0 | | | | | | | | --------------------------- Transmit statistics ... Zero all statistics counters on the entire system Return to Port Statistics Graph...
AT-S26 Version 2.0.1 User’s Guide Displaying Statistics for Transmitted Frames To display statistics for transmitted frames at both the switch and port level, perform the following procedure: 1. From the Main Menu, Ethernet Statistics. The Receive Statistics Graph in Figure 51 is displayed. 2. Select Transmit Statistics. The window in Figure 54 is displayed.
Displaying Ethernet Statistics Table 5 defines the statistics. Table 5 Transmit Frames Frame Type Description Total good transmits Total frames transmitted by the switch without errors since the last reset. Broadcasts Frames forwarded by the switch destined for all nodes on the network, excluding multicast frames. Multicasts Frames forwarded by the switch destined for multiple but specific addresses, excluding broadcast frames.
AT-S26 Version 2.0.1 User’s Guide Displaying RMON Statistics for a Switch To display the RMON statistics for a switch, perform the following steps: 1. From the Main Menu, select Ethernet statistics. The Receive Statistics Graph in Figure 51 is displayed. 2. Select RMON statistics. The RMON Statistics Graph window is displayed. An example of the window is shown in Figure 55.
Displaying Ethernet Statistics Displaying RMON Statistics for a Port To display RMON statistics for a specific port, perform the following procedure: 1. From the Main Menu, select Ethernet statistics. The Receive Statistics Graph shown in Figure 51 is displayed. 2. Select Port RMON Statistics. The Omega interface displays a list of the ports on the switch. 3. Select a port to display a graph similar to Figure 56. 4. To clear the graph, select Zero all statistics counters from the entire system. 5.
AT-S26 Version 2.0.1 User’s Guide Resetting the Statistics Counters You reset statistics counters because: ❑ The counters no longer reflect the current information. For example, disabling a port to fix a problem does not reset its counters. After the error clears and you manually re-enable the port, you may want its statistics to accumulate from a fresh start.
Displaying Ethernet Statistics Interpreting the Graphs The statistics graphs show the types of received and transmitted frames since the last time the counters or the switch were reset. The counters and the graph dynamically increment as the switch processes frames over a period of time. When the individual counters reach a maximum of 232 (over 4 billion), they reset to zero.
Chapter 7 Configuring the Omega Interface This chapter describes the security features of the Omega interface. These features allow you to configure the interface so as to prevent unauthorized individuals from accessing it and making changes to the configuration settings of a switch.
Configuring the Omega Interface Creating an Omega Password To prevent unauthorized individuals from accessing the Omega interface and altering a switch’s configuration settings, you can assign a password to the program. Any person who starts the program will be required to enter the password, regardless of how they access the program (i.e., RS232 port, web browser, Telnet program, or SNMP management program). The default value for the Omega interface is no password.
AT-S26 Version 2.0.1 User’s Guide Note The password can consist of the letters A to Z in uppercase and lowercase, as well as the numbers 1 to 9. It is recommended that you avoid special characters, such as a space, asterisk (*), or exclamation point (!). Avoiding the use of special characters is particularly important if you will be managing the switch using a web browser, since browsers cannot handle special characters in program passwords. 3.
Configuring the Omega Interface Specifying a Timeout Value Specifying a timeout value is a way to prevent unauthorized individuals from using the Omega interface in the event you forget to exit the Omega interface and leave your management station unattended. By specifying a timeout value, the program will end the session if it detects that there has been no management activity after the timeout value has expired. The default for the timeout value is 5 minutes.
AT-S26 Version 2.0.1 User’s Guide Enabling and Disabling the Access Methods As explained in Chapter 1, you can access the Omega interface three different ways. You can disable one or more of the methods to enhance the security of a switch by preventing unauthorized individuals from accessing the switch and making changes to the switch’s configuration settings. To enable or disable an Omega access method, perform the following steps: 1. From the Omega Main Menu, choose System Configuration.
Chapter 8 Upgrading Switch Software and Configuration Files This chapter contains the following procedures: ❑ Upgrading the Switch Software on page 137 ❑ Using Omega to Upgrade Additional Switches on page 140 ❑ Uploading and Downloading System Configuration Files on page 142 Upgrading the Switch Software Allied Telesyn periodically updates and revises the AT-S26 software for your AT-9006 switches.
Upgrading Switch Software and Configuration Files Upgrading the software in a switch involves using the Download Password. This password is required when upgrading the software except when using the XMODEM software upgrade feature. The default download password is ATS26. The password is case sensitive. Changing this default password to an unique password will prevent unauthorized personnel from changing the software on the switch.
AT-S26 Version 2.1.0 User’s Guide 6. Enter Yes and wait for the following message: The system host is now ready for download. Please start your XModem transfer. 7. Initiate the upgrade from your XModem host. The Xmodem host displays a message stating that the upgrade in progress. Be sure to wait until the switch has fully downloaded the software, performed its diagnostic tests, and reinitialized and rebooted itself before you attempt to reestablish an Omega session.
Upgrading Switch Software and Configuration Files Using Omega to Upgrade Additional Switches Once you have upgrade the software on one switch in the network, you can use the Omega interface to download the new software onto another switch. The switch with the upgraded software uses TFTP of the TCP/IP protocol suite to download the software to the other switch. This download feature will still work even if you do not use TCP/IP on your network.
AT-S26 Version 2.1.0 User’s Guide Downloading Software to All Switches To download a new version of the AT-S26 software from one switch to all the other switches using the Omega interface, perform the following procedure: 1. Start an Omega session on the switch that contains the new AT-S26 software. The session can be a local session, web-based session, Telnet session, or SNMP session. Note This procedure should be performed during periods of low network activity.
Upgrading Switch Software and Configuration Files Uploading and Downloading System Configuration Files The switch configuration information can be downloaded and saved to a file on a workstation. This file can then be used to restore the configuration information to the same switch or can be uploaded to other switches of the same family that need to be configured identically. TFTP is used to download and upload the switch configuration information.
Appendix A AT-S26 Default Settings This appendix lists the AT-S26 Version 2.0.1 factory default settings. Settings Default IP Address Subnet Mask 0.0.0.0 0.0.0.
AT-S26 Default Settings Settings Default Omega Omega Password No password Omega Time Out Value 5 minutes Local Access Enabled Remote Access (Telnet or SNMP) Enabled Web-based Access Enabled AT-9006T Twisted Pair Ports Status Enabled Duplex Mode Auto-negotiation Speed Auto-negotiation Backpressure Disabled Flow Control Disabled Broadcast Packets Forwarded Security Automatic AT-9006SX/SC and AT-9006LX/SC Fiber Optic Ports Status Enabled Duplex Mode Full-duplex Speed 1000 Mbps Security Automatic VLANs Port-
Appendix B Spanning Tree Protocol Concepts This appendix provides a brief explanation of the Spanning Tree Protocol as implemented by Allied Telesyn on the switches. For detailed information on the operation of the Spanning Tree Protocol, consult Section 4 of IEEE Std 802.1D, ISO/IEC 10038: 1993. The AT-9006 switch, which runs the AT-S26 software, implements the IEEE 802.1D Spanning Tree Protocol (STP).
Spanning Tree Protocol Concepts Spanning Tree Protocol Features The switches implement the following STP features: 146 ❑ Compensate automatically for the failure, removal, or addition of any bridge in an active data path. ❑ Achieve port changes in short time intervals, which establishes a stable active topology quickly with a minimum of network disturbance. ❑ Use a minimum amount of communications bandwidth to accomplish the operation of the STP.
AT-S26 Version 2.0.1 User’s Guide Spanning Tree Protocol Parameters Several configuration parameters control the operation of the Spanning Tree Protocol. Table 6 describes the parameters and lists each parameter default settings for the switch.
Spanning Tree Protocol Concepts Spanning Tree Protocol Operation When STP is enabled for the first time, or when the network topology changes due to a failure, the addition, or removal of a component, the spanning tree algorithm automatically sets up the active topology of the current network. Communication Between Bridges Periodically, all devices running STP on a network transmit packets to each other through the Bridge Group Address which all bridges share.
AT-S26 Version 2.0.1 User’s Guide Remapping Network Topology If there is a change in the network topology due to a failure, removal, or addition of any active components, the active topology also changes. This may trigger a change in the state of some blocked ports. The blocked ports do not forward packets immediately. They first pass through two states, listening and learning, to verify that they may begin forwarding.
Appendix C Supported Platforms Table 7 lists the Allied Telesyn Ethernet switches supported by the AT-S26 Version 2.0.1 management software. Table 7 AT-9006 Switches Model1 Number of Ports Type of Connector Maximum Distance AT-9006T 6 100Base-T / 1000Base-TX RJ-45 100 m (328 ft) AT-9006SX/SC 6 1000Base-SX SC 550 m (1804 ft)2 AT-9006LX/SC 6 1000Base-LX SC 10 km (6.25 mi)3 Type of Port 1. The models include two expansion slots. 2.
Supported Platforms Table 8 lists the optional expansion modules supported by the software. Table 8 Optional Expansion Modules Model Number of Ports Type of Ports Type of Connector Type of Cable1 Maximum Distance2 AT-A14 1 100/1000Base-T RJ-45 Category 5 or better twisted pair3 100 m (328 ft) AT-A15/SX 1 1000Base-SX SC Multimode fiber optic 550 m (1,804 ft) AT-A15/LX 1 1000Base-LX SC Single-mode fiber optic 10 km (6.2 mi) AT-A16 2 100Base-FX VF-45 Multimode fiber optic 2 km (1.
Index (Entries in italic are menu selections.
Index Default VLAN, 102 Delete MAC Address, 92 deleting multicast addresses, 92 port trunk, 73 static MAC addresses, 88 VLAN, 113 Destination Port, 75 DHCP Configuration, 45 DHCP server, 42 Diagnostics, 59 diagnostics, running, 59 Disable Spanning Tree for all Ports, 48 disabling port mirroring, 75 displaying MAC address table by address, 84 MAC address table, 82 MAC addresses by port, 83 port status, 66 received frame statistics, 122 RMON statistics, 127, 128 transmitted frame statistics, 125 documentatio
AT-S26 Version 2.0.
Index Status port, 67 stop bits, 58 STP, see spanning tree protocol subnet mask, 44 switch configuring IP parameters, 42 configuring the RS232 port, 57 connecting to remote, 34 MAC address, 59 naming, 54 reassigning default settings, 56 resetting, 55 upgrading AT-S26 software, 137 System Configuration, 36, 57 System switch configuration, 72, 73 T Technical Support web link, 31 Telnet session, 33 terminal emulation, 25 terminal interface, 25 TFTP, to upgrade AT-S26 software, 139 timeout value, 134 total goo
