Allied Telesis AT-S39 User Manual
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Allied Telesis AT-S39 User Manual

Allied Telesis AT-S39 User Manual

Management software for at-8012m, at-8012m-qs, at-8016f/xx (mt, sc and st), at-8024, at-8024gb, at-8024m, at-8026fc, at-8026t, and at-8088/xx (mt and sc) fast ethernet switches version 3.3.0
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User's Guide
AT-8012M, AT-8012M-QS, AT-8016F/xx (MT, SC and
ST), AT-8024, AT-8024GB, AT-8024M, AT-8026FC,
AT-8026T, and AT-8088/xx (MT and SC)
FAST ETHERNET SWITCHES
VERSION 3.3.0
PN 613-50245-00 Rev J
Management
Software
AT-S39
®

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  • Page 1 Management ® Software AT-S39 ◆ User’s Guide AT-8012M, AT-8012M-QS, AT-8016F/xx (MT, SC and ST), AT-8024, AT-8024GB, AT-8024M, AT-8026FC, AT-8026T, and AT-8088/xx (MT and SC) FAST ETHERNET SWITCHES VERSION 3.3.0 PN 613-50245-00 Rev J...
  • Page 2 Copyright © 2004 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.

  • Page 3: Table Of Contents

    Table of Contents List of Figures ........................................9 Preface ............................................13 How This Guide is Organized ...................................14 Document Conventions ....................................15 Where to Find Web-based Guides .................................16 Contacting Allied Telesyn ....................................17 Online Support......................................17 Email and Telephone Support ................................17 Returning Products..................................... 17 For Sales or Corporate Information ..............................
  • Page 4 Configuring the AT-S39 Management Security Features ........................50 Configuring the Management Passwords............................51 Configuring Management Access ................................ 52 Viewing the AT-S39 Version Number and Switch MAC Address ......................53 Pinging a Remote System ....................................54 Returning the AT-S39 Software to the Factory Default Values ......................55 Configuring the Console Startup Mode ..............................
  • Page 5 Chapter 9 STP and RSTP ........................................96 STP and RSTP Overview .....................................97 Bridge Priority and the Root Bridge..............................98 Mixed STP and RSTP Networks ................................104 Spanning Tree and VLANs..................................104 Enabling or Disabling STP or RSTP ................................105 Configuring STP ......................................... 107 Configuring STP Bridge Settings.................................
  • Page 6 Table of Contents Chapter 14 Class of Service .........................................174 Class of Service Overview ....................................175 Configuring CoS .........................................177 Chapter 15 IGMP Snooping ........................................179 IGMP Snooping Overview ....................................180 Activating IGMP Snooping .....................................182 Displaying a List of Host Nodes ..................................185 Displaying a List of Multicast Routers ................................186 Chapter 16 Broadcast Storm Control .....................................187 Broadcast Storm Control Overview ................................188...
  • Page 7 Configuring the SNMP Parameters and Trap IP Addresses ........................ 254 Resetting a Switch ......................................256 Pinging a Remote System ....................................257 Returning the AT-S39 Software to the Factory Default Values ......................258 Chapter 23 Enhanced Stacking ......................................260 Setting a Switch’s Enhanced Stacking Status ............................261 Selecting a Switch in an Enhanced Stack ..............................
  • Page 8 Setting the Maximum Number of Broadcast Frames ...........................325 Chapter 34 TACACS+ and RADIUS Protocols ................................326 Configuring TACACS+ and RADIUS ................................327 Appendix A AT-S39 Default Settings ....................................331 Management Interface Default Settings ..............................331 Switch Administration Default Settings ..............................332 System Software Default Settings ................................333 Enhanced Stacking Default Setting ................................333 SNMP Default Settings ....................................333...

  • Page 9: List Of Figures

    List of Figures Chapter 1 Overview ..................................20 Chapter 2 Starting a Local or Telnet Management Session .....................29 Figure 1: Connecting a Terminal or PC to the RS232 Terminal Port ....................31 Figure 2: Main Menu ......................................33 Chapter 3 Basic Switch Parameters ............................38 Figure 3: Administration Menu ..................................
  • Page 10 List of Figures Chapter 7 Port Trunking ................................82 Figure 20: Port Trunk Example ..................................83 Figure 21: Load Distribution Method ................................86 Figure 22: Port Trunking Menu ..................................89 Chapter 8 Port Mirroring ................................92 Figure 23: Port Mirroring Menu ..................................94 Chapter 9 STP and RSTP ................................
  • Page 11 Chapter 16 Broadcast Storm Control ............................187 Figure 51: Broadcast Storm Control Menu .............................. 190 Chapter 17 TACACS+ and RADIUS Protocols ..........................192 Figure 52: Authentication Menu ................................. 196 Figure 53: Authentication Menu (TACACS+) ............................197 Figure 54: RADIUS Client Configuration ..............................199 Figure 55: RADIUS Server Configuration ..............................
  • Page 12 List of Figures Figure 82: Port Status Window ..................................272 Figure 83: Port Statistics Window ................................274 Chapter 25 Port Security ................................276 Figure 84: Port Security Menu ..................................277 Chapter 26 Port Trunks ................................278 Figure 85: Port Trunking Menu ..................................279 Chapter 27 Port Mirroring ................................

  • Page 13: Preface

    Preface This guide contains instructions on how to configure an AT-8000 Series Fast Ethernet Switch using the AT-S39 management software. The AT-8000 Series consists of the following Fast Ethernet switches: ❑ AT-8012M ❑ AT-8012M-QS ❑ AT-8016F/xx (MT, SC and ST) ❑...

  • Page 14: How This Guide Is Organized

    Section I: Overview This section contains just one chapter. It reviews the different ways that you can access the AT-S39 management software on a switch. Section II: Local and Telnet Management The chapters in this section explain how to manage a switch from a local management session or a Telnet management session.

  • Page 15: Document Conventions

    AT-S39 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...

  • Page 16: Where To Find Web-Based Guides

    Preface Where to Find Web-based Guides The installation and user guides for all Allied Telesyn products are available in Portable Document Format (PDF) from on our web site at www.alliedtelesyn.com. You can view the documents on-line or download them onto a local workstation or server.

  • Page 17: Contacting Allied Telesyn

    AT-S39 User’s Guide Contacting Allied Telesyn This section provides Allied Telesyn contact information for technical support as well as sales or corporate information. Online Support You can request technical support online by accessing the Allied Telesyn Knowledge Base from the following web site: http://kb.alliedtelesyn.com.

  • Page 18: Management Software Updates

    Preface Management Software Updates You can download new releases of management software for our managed products from either of the following Internet sites: ❑ Allied Telesyn web site: http://www.alliedtelesyn.com ❑ Allied Telesyn FTP server: ftp://ftp.alliedtelesyn.com To download new software from the Allied Telesyn FTP server using your workstation’s command prompt, you need FTP client software and you must log in to the server.

  • Page 19: Section I

    Section I Overview The chapter in this section provides a brief overview of the AT-S39 management software. It explains some of the functions that you can perform with the management software and reviews different methods for accessing the AT-S39 software on an AT-8000 Series Fast Ethernet...
  • Page 20 Chapter 1 Overview The AT-S39 management software is intended for the AT-8000 Series Fast Ethernet Switches. The software is used to monitor and adjust a switch’s operating parameters. Some of the functions you can perform with the software include: ❑ Enable and disable ports ❑...
  • Page 21 To actively manage a switch, such as to change or adjust the operating parameters, you must access the switch’s AT-S39 management software. The AT-S39 software features a menu interface and a command line interface that make it very easy to use, and a special interface for managing a switch with a web browser.

  • Page 22: Local Management Session

    Section I: Overview Local Management Session You establish a local management session with an AT-8000 Series switch by connecting a terminal or a PC with a terminal emulator program to the RS232 Terminal port on the front panel of the switch, using a straight-through RS-232 cable.

  • Page 23: Telnet Management Session

    IP address. Once you have established a Telnet management session with the switch that has an IP address, you can use the enhanced stacking feature of the AT-S39 software to access all the other enhanced stacking switches in the same subnet.

  • Page 24: Web Browser Management Session

    Section I: Overview Web Browser Management Session You can also use a web browser to manage a switch. This too is referred to as remote management, just like a Telnet management session. You can manage a switch from any workstation on your network that has a web browser.

  • Page 25: Snmp Management Session

    Another way to remotely manage the switch is with an SNMP management program. A familiarity with Management Information Base (MIB) objects is necessary for this type of management. The AT-S39 software supports the following MIBs: ❑ SNMP MIB-II (RFC 1213) ❑ Bridge MIB (RFC 1493) ❑...

  • Page 26: Management Access Levels

    You log in as a manager or an operator by entering the appropriate password when you start an AT-S39 management session. To log in as a manager, type “manager” as the login and “friend” as the password. The default user name for operator is “operator”...

  • Page 27: Local And Telnet Management

    Section II Local and Telnet Management The chapters in this section explain how to manage an AT-8000 Series switch from a local or Telnet management session. The chapters include: ❑ Chapter 2: Starting a Local or Telnet Management Session on page 29 ❑...
  • Page 28 Section II: Local and Telnet Management ❑ Chapter 18: 802.1x Port-Based Access Control on page 202 ❑ Chapter 19: Ethernet Statistics on page 215 ❑ Chapter 20: File Downloads and Uploads on page 220...

  • Page 29: Starting A Local Or Telnet Management Session

    Chapter 2 Starting a Local or Telnet Management Session This chapter contains the procedure for starting a local or Telnet management session on an AT-8000 Series switch. The sections in the chapter are: ❑ Local Management Session on page 30 ❑...

  • Page 30: Local Management Session

    On the front panel of the switch is a port labelled RS232 Terminal Port. You can use this port to establish a local (out-of-band) management session with the switch’s AT-S39 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.

  • Page 31: Starting A Local Management Session

    AT-S39 User’s Guide Starting a Local To start a local management session, perform the following procedure: Management 1. Connect one end of the straight-through RS232 management cable Session with a DB-9 connector to the RS232 Terminal Port on the switch. (The management cable is included with the switch.)
  • Page 32 Section II: Local or Telnet Management Note The switch has an auto-detect feature on the serial port that automatically determines the speed of the local terminal. You activate this feature by pressing the Return or Enter key twice on your keyboard when you initially start the local interface or within five seconds after powering on or resetting the switch.

  • Page 33: Enhanced Stacking

    Please note the following: ❑ The Command Line Interface selection in the Main Menu is described in the AT-S39 Command Line Interface User’s Guide. ❑ If the prompt “Manager$” or “Operator$” is displayed instead of the Main Menu, the management software has been configured to initially display the command line prompt instead of the Main Menu.

  • Page 34: Quitting From A Local Session

    Section II: Local or Telnet Management For information on enhanced stacking and how to manage different switches from the same management session, refer to Chapter 4, Enhanced Stacking on page 57. Quitting from a To quit a local session, return to the Main Menu and type Q for Quit. Local Session You should always exit from a management session when you are finished managing a switch.

  • Page 35: Telnet Management Session

    AT-S39 User’s Guide Telnet Management Session You can use the Telnet application protocol from a workstation on your network to manage an AT-8000 Series switch. This type of management is referred to as remote management because, unlike a local management session, you do not have to be in the wiring closet where the switch is located.

  • Page 36: Quitting From A Telnet Management Session

    Section II: Local or Telnet Management Note You can run only one Telnet management session on a switch at a time. Additionally, you cannot run both a Telnet management session and a local management session on the same switch at the same time.

  • Page 37: Saving Your Parameter Changes

    AT-S39 User’s Guide Saving Your Parameter Changes When you make a change to a switch parameter, the change is, in most cases, immediately activated on the switch as soon as you enter it. However, a parameter change is initially saved only to temporary memory by the switch and will be lost the next time you reset or power cycle the unit.

  • Page 38: Basic Switch Parameters

    ❑ Resetting a Switch on page 49 ❑ Configuring the AT-S39 Management Security Features on page 50 ❑ Viewing the AT-S39 Version Number and Switch MAC Address on page 53 ❑ Pinging a Remote System on page 54 ❑ Returning the AT-S39 Software to the Factory Default Values on page 55 ❑...

  • Page 39: When Does A Switch Need An Ip Address

    AT-S39 User’s Guide When Does a Switch Need an IP Address? One of the tasks to building or expanding a network is deciding which of the managed switches need a unique IP address. In the past the rule was that a managed switch needed an IP address if you wanted to manage it remotely, such as with the Telnet application protocol or a web browser.

  • Page 40: How Do You Assign An Ip Address

    How Do You Once you have decided which, if any, switches on your network need an IP address, you have to access the AT-S39 software on the switches and Assign an IP assign the addresses. There are actually two ways in which a switch can Address? obtain an IP address.

  • Page 41: Configuring An Ip Address And Switch Name

    To manually set a switch’s IP address, perform the following procedure: 1. From the Main Menu, type 4 to select Administration Menu. The Administration Menu is shown in Figure 3. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Administration Menu 1 - IP Address ..
  • Page 42 Section II: Local and Telnet Management 2. Change the parameters as desired. The parameters in the IP Parameters menu are described below: 1 - IP Address This parameter specifies the IP address of the switch. You must assign an IP address if you want the switch to function as the Master switch of an enhanced stack.
  • Page 43 AT-S39 User’s Guide 7 - Set Password This parameter is used to change the Manager and Operator’s login passwords. For instructions, refer to Configuring the Management Passwords on page 51. 8 - BOOTP/DHCP This selection activates and deactivates the BOOTP and DHCP client software on the switch.

  • Page 44: Activating The Bootp And Dhcp Client Software

    Section II: Local and Telnet Management Activating the BOOTP and DHCP Client Software The BOOTP and DHCP application protocols were developed to simplify network management. They are used to automatically assign IP configuration information to the devices on your network, such as an IP address, subnet mask, and a default gateway address.
  • Page 45 AT-S39 User’s Guide 4. Type S to select Save Configuration Changes. Note If you activate the BOOTP and DHCP client software, the switch immediately begins to query the network for a BOOTP or DHCP server. The switch continues to query the network for its IP configuration until it receives a response.

  • Page 46: Configuring Snmp Community Strings And Trap Ip Addresses

    Configuring Management Access on page 52. 1. From the Main Menu, type 5 to select System Config Menu. The System Configuration Menu is shown in Figure 4. Allied Telesyn Ethernet Switch AT-8024GB - AT-S39 Sales Switch Login Privilege: Manager System Config Menu 1 - MAC Aging Time ....

  • Page 47: Figure 5 Advanced Configuration Menu

    AT-S39 User’s Guide 2. From the System Configuration Menu, type A to select Advanced Configuration. The Advanced Configuration menu is shown in Figure 5. Allied Telesyn Ethernet Switch AT-8024GB - AT-S39 Sales Switch Login Privilege: Manager Advanced Configuration Menu 1 - IGMP Snooping Configuration...
  • Page 48 Section II: Local and Telnet Management 4. Adjust the parameters as desired. To change a value, type its corresponding number and, when prompted, enter the new value. The parameters are described below. 1 - GET Community 2 - SET Community 3 - Trap Community Use these parameters to set a switch’s SNMP community strings.

  • Page 49: Resetting A Switch

    AT-S39 User’s Guide Resetting a Switch This procedure reboots the switch. Note Any configuration changes not saved will be lost once the switch reboots. To save your configuration changes, return to the Main Menu and type S to select Save Configuration Changes.

  • Page 50: Configuring The At-S39 Management Security Features

    Section II: Local and Telnet Management Configuring the AT-S39 Management Security Features The AT-S39 software has several security features that can help prevent unauthorized individuals from changing a switch’s parameter settings. The security features are: ❑ Manager and Operator Passwords - The management software has two standard, management login accounts: Manager and Operator.

  • Page 51: Configuring The Management Passwords

    1. From the Main Menu, type 4 to select Administrator Menu. 2. From the Administrator Menu, type 7 to select Set Password. The Passwords Menu is shown in Figure 7. Allied Telesyn Ethernet Switch AT-8024GB - AT-S39 Login Privilege: Manager Passwords Menu...

  • Page 52: Configuring Management Access

    Timer Interval and, when prompted, enter a value of from 1 to 60 minutes. The default value is ten minutes. For example, if you specify 2 minutes, the AT-S39 management software automatically ends a local or remote management session if it does not detect any activity from the management station after 2 minutes.

  • Page 53: Viewing The At-S39 Version Number And Switch Mac Address

    AT-S39 User’s Guide Viewing the AT-S39 Version Number and Switch MAC Address The procedure in this section displays the following switch information: ❑ AT-S39 version number ❑ Bootloader version number ❑ Serial number ❑ MAC Address To display the information, type 8 to select Diagnostics from the Main Menu.

  • Page 54: Pinging A Remote System

    Section II: Local and Telnet Management Pinging a Remote System You can instruct the switch to ping a remote device on your network. This procedure is useful in determining whether a valid link exists between the switch and another device. Note The switch must have an IP address in order for you to perform this procedure.

  • Page 55: Returning The At-S39 Software To The Factory Default Values

    The procedure in this section returns all AT-S39 software parameters to their default values. This procedure also deletes any VLANs you created on the switch. The AT-S39 software default values can be found in Appendix A, AT-S39 Default Settings on page 331.

  • Page 56: Configuring The Console Startup Mode

    Section II: Local and Telnet Management Configuring the Console Startup Mode You can configure the AT-S39 software to display either the Main Menu or the command line interface prompt ($) whenever you start a local or remote management session. The default is the Main Menu.

  • Page 57: Chapter 4 Enhanced Stacking

    Chapter 4 Enhanced Stacking This chapter explains the enhanced stacking feature. The sections in this chapter include: ❑ Enhanced Stacking Overview on page 58 ❑ Setting a Switch’s Enhanced Stacking Status on page 61 ❑ Selecting a Switch in an Enhanced Stack on page 63...

  • Page 58: Enhanced Stacking Overview

    Section II: Local and Telnet Management Enhanced Stacking Overview The enhanced stacking feature can make it easier for you to manage the AT-8000 Series switches in your network. It offers the following benefits: ❑ You can manage up to 24 switches from one local or remote management session.
  • Page 59 AT-S39 User’s Guide There are three basic steps to implementing this feature on your network: 1. You must select a switch in your network to function as the master switch of the stack. The master switch can be any switch that supports enhanced stacking, such as an AT-8000 Series switch, an AT-8400 Series switch, or an AT-8524M switch.

  • Page 60: Figure 9 Enhanced Stacking Example

    Section II: Local and Telnet Management Figure 9 is an example of the enhanced stacking feature. Master 1 IP Address 149.32.11.22 Master 2 IP Address Subnet A 149.32.11.16 Router Subnet B Master 1 IP Address 149.32.09.18 Master 2 IP Address 149.32.09.24 Figure 9 Enhanced Stacking Example The example consists of a network of two subnets interconnected with a...

  • Page 61: Setting A Switch's Enhanced Stacking Status

    To adjust a switch’s enhanced stacking status, perform the following procedure: 1. From the Main Menu, type 9 to select Enhanced Stacking. The Enhanced Stacking menu is shown in Figure 10. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Login Privilege: Manager Enhanced Stacking 1 - Switch State-(M)aster/(S)lave/(U)navailable..Master...
  • Page 62 Section II: Local and Telnet Management The menu displays the current status of the switch at the end of selection “1 - Switch State.” For example, the switch’s current status in the figure above is Master. Note The “2 - Stacking Services” selection is included in the menu only for master switches.

  • Page 63: Selecting A Switch In An Enhanced Stack

    1. From the Main Menu, type 9 to select Enhanced Stacking. 2. From the Enhanced Stacking menu, type 2 to select Stacking Services. The Stacking Services menu is shown in Figure 11. Allied Telesyn Ethernet Switch AT-8024GB - AT-S39 Sales Switch Login Privilege: Manager...

  • Page 64: Returning To The Master Switch

    Section II: Local and Telnet Management 3. Type G to select Get/Refresh List of Switches. The Master switch polls the network for all slave and other Master switches in the enhanced stack and displays a list of the switches in the Stacking Services menu. Note The Master switch on which you started the management session is not included in the list, nor are any switches with an enhanced...

  • Page 65: Chapter 5 Port Parameters

    Chapter 5 Port Parameters The chapter contains procedures for viewing and changing the parameter settings for the individual ports on a switch. This chapter contains the following procedures: ❑ Displaying Port Status on page 66 ❑ Configuring Port Parameters on page 69 ❑...

  • Page 66: Displaying Port Status

    To display the status of the ports on the switch, perform the following procedure: 1. From the Main Menu, type 1 to select Port Menu. The Port Menu is shown in Figure 12 Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Port Menu...
  • Page 67 AT-S39 User’s Guide The information in this window is for viewing purposes only. The columns in the window are described below: The port number. 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.
  • Page 68 Section II: Local and Telnet Management Transmit - Flow control only as packets are being transmitted out the port. Receive - Flow control only on as packets are being received on the port. Both - Flow control for both packets entering and leaving the port. State The current operating status of the port.

  • Page 69: Configuring Port Parameters

    You can specify the ports individually (for example, 5,7,22), as a range (for example, 18-23), or both (for example, 1,5,14- 22). The Port Configuration menu is shown in Figure 14. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Port Configuration Configuring Ports 4 0 - Description ..
  • Page 70 Section II: Local and Telnet Management If you are configuring multiple ports and the ports have different settings, the Port Configuration menu displays the settings of the lowest numbered port. Once you have configured the settings of the port, all of its settings are copied to the other selected ports. 4.

  • Page 71: Figure 15 Manual Speed And Duplex Mode Settings

    AT-S39 User’s Guide To avoid this problem, when connecting an end node with a fixed duplex mode of full-duplex to a switch port, you should disable Auto-Negotiation on the port and set the port’s speed and duplex mode manually. ❑ The auto-MDI/MDI-X setting is available only when a port’s speed and duplex mode are set by Auto-Negotiation.
  • Page 72 Section II: Local and Telnet Management 6 - Advertise 10FDX 7 - Advertise 10HDX 8 - Advertise 100FDX 9 - Advertise 100HDX These selections appear in the menu only when a port is configured for Auto-Negotiation. During Auto-Negotiation, a switch port determines the appropriate speed and duplex mode by advertising its capabilities to the end node connected to it.
  • Page 73 AT-S39 User’s Guide Where they differ is that while flow control applies to ports operating in full-duplex, backpressure applies to ports operating in half-duplex mode. When a twisted pair port on the switch operating in half-duplex mode needs to stop an end node from transmitting data, it forces a collision.

  • Page 74: Displaying Uplink Information

    Section II: Local and Telnet Management Displaying Uplink Information The AT-S39 management software can display basic manufacturer information about an optional GBIC module in an AT-8024GB switch or the fiber optic ports in an AT-8026FC switch. To display uplink information, perform the following procedure: 1.

  • Page 75: Figure 17 Gbic Information Menu

    The management software displays a menu containing basic information about the GBIC module or fiber optic port. Figure 17 is an example of the menu. Allied Telesyn Ethernet Switch AT-8024GB - AT-S39 Login Privilege: Manager Uplink Information Menu Port Number ....25 Type of Serial Transceiver ..

  • Page 76: Chapter 6 Port Security

    Chapter 6 Port Security This chapter contains the procedures for setting port security. The sections in this chapter include: ❑ Port Security Overview on page 77 ❑ Configuring Port Security on page 79 ❑ Configuring the Limited Security Mode on page 80 Note To change a switch’s port security level, you must use a local management session.

  • Page 77: Port Security Overview

    AT-S39 User’s Guide Port Security Overview This feature can enhance the security of your network. You can use it to control which end nodes can forward frames through the switch, and so prevent unauthorized individuals from accessing your network or particular parts of the network.

  • Page 78: Secure

    Section II: Local and Telnet Management Static MAC addresses are retained by the switch and are not included in the count of maximum addresses that can be learned by a port. You can continue to add static MAC addresses to a port even after a port has learned its maximum number of dynamic MAC addresses.

  • Page 79: Configuring Port Security

    1. From the Main Menu, type 1 to select Port Menu. 2. From the Port Menu, type 5 to select Port Security. The Port Security menu is shown in Figure 18. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Port Security 1 - Configure Port Security Mode ..

  • Page 80: Configuring The Limited Security Mode

    3. From the Port Security menu, type 2 to select Configure Limited Mode Parameters. The Limited Security Mode menu is shown in Figure 19. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Port Security Limited Mode Menu...
  • Page 81 AT-S39 User’s Guide 5. Enter the port(s) where you want to specify a new MAC address limit. You can specify the ports individually (e.g., 1,4), as a range (e.g., 4-7), or both (e.g., 2-7,11,15). The following prompt is displayed: Enter new MAC limit ->...

  • Page 82: Chapter 7 Port Trunking

    Chapter 7 Port Trunking This chapter contains the procedures for creating and deleting port trunks. Sections in the chapter include: ❑ Port Trunking Overview on page 83 ❑ Creating a Port Trunk on page 89 ❑ Deleting a Port Trunk on page 91...

  • Page 83: Port Trunking Overview

    AT-S39 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 is 2, 3, or 4 ports that have been grouped together to function as one logical path. A port trunk...

  • Page 84: Port Operating Specifications

    ❑ When cabling a trunk, the order of the connections should be maintained on both nodes. The lowest numbered port in a trunk on the switch should be connected to the lowest numbered port of the trunk on the other device, the next lowest numbered port on the switch should be connected to the next lowest numbered port on the other device, and so on.
  • Page 85 AT-S39 User’s Guide The AT-S39 management software offers two load distribution methods. They are: ❑ Source Address (SA) Trunking ❑ Source Address / Destination Address (SA/DA) Trunking Let’s first take a look at the SA method. When a switch receives a packet from a network node, it examines the destination address to determine on which switch port, if any, the packet should be transmitted.

  • Page 86: Figure 21 Load Distribution Method

    Workstation Workstation Workstation Workstation AT-8024 RS-232 TERMINAL PORT Switch #1 10Base-T / 100Base-TX Fast Ethernet Switch MODE Link FAULT Mode MASTER Link FULL Mode AT-8026FC RS-232 TERMINAL PORT CLASS 1 10Base-T / 100Base-TX Fast Ethernet Switch LASER PRODUCT DO NOT STARE INTO BEAM MODE Switch #2...
  • Page 87 AT-S39 User’s Guide For example, when Workstation B sends a packet to the server, Switch #1 will use Port 14 of the trunk to transmit it to Switch #2. An assignment of a source MAC address to a port trunk remains active as long as the source node remains active.
  • Page 88 Even though there is only one source, all the data links in the trunk are used. For instance, if the server needed to send a packet to Workstation C, by referring to the matrix Switch #2 would use Port 3 of the trunk to transmit the packet from that particular source MAC address to Switch As you can see, the SA/DA method is useful when a port trunk needs to send packets from one source node to many destination nodes,...

  • Page 89: Creating A Port Trunk

    1. From the Main Menu, type 1 to select Port Menu. 2. From the Port Menu, type 3 to select Port Trunking. The Port Trunking menu is shown in Figure 22. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Port Trunking 1 - Trunk Ports ..
  • Page 90 3. Type 1 to select Trunk Ports. The following prompt is displayed. Enter Trunk Port(s) -> 4. Enter the ports that will constitute the port trunk and press Return. You can specify the ports individually (e.g., 1,2,3,4) or as a range (e.g., 7-10).

  • Page 91: Deleting A Port Trunk

    AT-S39 User’s Guide Deleting a Port Trunk Caution Disconnect the cables from the port trunk on the switch before performing the following procedure. Deleting a port trunk without first disconnecting the cables can create loops in your network topology. Data loops can result in broadcast storms and poor network performance.

  • Page 92: Chapter 8 Port Mirroring

    Chapter 8 Port Mirroring This chapter contains the procedures for creating and deleting a port mirror. Sections in the chapter include: ❑ Port Mirroring Overview on page 93 ❑ Creating a Port Mirror on page 94 ❑ Deleting a Port Mirror on page 95...

  • Page 93: Port Mirroring Overview

    AT-S39 User’s Guide Port Mirroring Overview The port mirroring feature allows you to unobtrusively monitor the traffic being received and transmitted on one or more ports on a switch by having the traffic copied to another switch port. You can connect a...

  • Page 94: Creating A Port Mirror

    1. From the Main Menu, type 1 to select Port Menu. 2. From the Port Menu, type 2 to select Port Mirroring. The Port Mirroring menu is shown in Figure 23. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Port Mirroring 1 - Mirror (Destination) Port ..

  • Page 95: Deleting A Port Mirror

    AT-S39 User’s Guide Deleting a Port Mirror To delete a port mirror, perform the following procedure: 1. From the Main Menu, type 1 to select Port Menu. 2. From the Port Menu, type 2 to select Port Mirroring. The Port Mirroring menu is shown in Figure 23 on page 94.

  • Page 96: Chapter 9 Stp And Rstp

    Chapter 9 STP and RSTP This chapter provides background information on the Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP). The chapter also contains procedures on how to adjust the STP and RSTP bridge and port parameters. The sections in this chapter include: ❑...

  • Page 97: Stp And Rstp Overview

    AT-S39 User’s Guide STP and RSTP Overview A significant danger to Ethernet network performance is the existence of a data loop in a network topology. A data loop exists when two or more nodes on a network can transmit data to each other over more than one data link.

  • Page 98: Bridge Priority And The Root Bridge

    Section II: Local and Telnet Management Bridge Priority The first task that bridges perform when a spanning tree protocol is activated on a network is the selection of a root bridge. A root bridge and the Root distributes network topology information to the other network bridges Bridge and is used by the other bridges to determine if there are redundant paths in the network.
  • Page 99 AT-S39 User’s Guide Path Costs and Port Costs Once the Root Bridge has been selected, the bridges must determine if the network contains redundant paths and, if one is found, they must select a preferred path while placing the redundant paths in a backup or blocking state.
  • Page 100 Section II: Local and Telnet Management RSTP port cost also features an Auto-Detect feature. This features allows RSTP to automatically set the port cost according to the speed of the port, assigning a lower value for higher speeds. Auto-Detect is the default setting on the ports when the switch is operating in RSTP.
  • Page 101 AT-S39 User’s Guide Forwarding Delay and Topology Changes 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. However, a change in a port state is not activated immediately.

  • Page 102: Figure 24 Point-To-Point Ports

    Section II: Local and Telnet Management The root bridge will periodically transmit a BPDU to determine whether there have been any changes to the network topology and to inform other bridges of topology changes. The frequency with which the root bridge sends out a BPDU is called the Hello Time.

  • Page 103: Figure 25 Edge Port

    AT-S39 User’s Guide If a port is operating in half-duplex mode and is not connected to any further bridges participating in STP or RSTP, then the port is an edge port. Figure 25 illustrates an edge port on an AT-8024 switch. The port is connected to an Ethernet hub, which in turn is connected to a series of Ethernet workstations.

  • Page 104: Mixed Stp And Rstp Networks

    Section II: Local and Telnet Management Mixed STP and RSTP IEEE 802.1w is fully compliant with STP IEEE 802.1d. Your network can consist of bridges running both protocols. STP and RSTP in the same RSTP Networks network should be able to operate together to create a single spanning tree domain.

  • Page 105: Enabling Or Disabling Stp Or Rstp

    AT-S39 User’s Guide Enabling or Disabling STP or RSTP The AT-S39 software supports STP and RSTP. Only one spanning tree protocol can be active on the switch at a time. Before you can enable a spanning tree protocol or configure its settings, you must first select it as the active spanning tree protocol on the switch.
  • Page 106 Section II: Local and Telnet Management b. Type Y for yes to change the currently active spanning tree protocol, or N to cancel this procedure. The following prompt is displayed: Enter new active protocol version: S-STP, R-RSTP: c. Type S to select STP or R to select RSTP. The following prompt is displayed: Enter Spanning Tree Status: E-Enable, D-Disable: d.

  • Page 107: Configuring Stp

    IEEE 802.1d standard before changing any of the STP parameters. 1. From the Spanning Tree Menu, type 3 to select STP Configuration. The STP Menu is shown in Figure 29. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager STP Menu The current protocol version is STP.
  • Page 108 Section II: Local and Telnet Management 2. Adjust the bridge STP settings as needed. The parameters are described below. 1 - 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.

  • Page 109: Configuring Stp Port Settings

    AT-S39 User’s Guide 6 - Config STP Port Settings Configures the STP port parameters. For instructions, refer to Configuring STP Port Settings on page 109. 8 - Reset STP to Defaults Resets all STP bridge and port settings to their default values. This option is available only when spanning tree is disabled on the switch.

  • Page 110: Figure 30 Config Stp Port Settings Menu

    Section II: Local and Telnet Management The STP Port Configuration menu is shown in Figure 30. Allied Telesyn AT-8024 Ethernet Switch - AT-S39 Sales Switch Login Privilege: Manager Config STP Port Settings Configuring Ports 4 to 4 1 - Participate ..Yes 2 - Fast Mode ..
  • Page 111 AT-S39 User’s Guide 3 - Port 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 value for this parameter for all ports and speeds is 100.

  • Page 112: Configuring Rstp

    IEEE 802.1w standard before changing any of the RSTP parameters. 1. From the Spanning Tree Menu, type 4 to select RSTP Configuration. The RSTP Menu is shown in Figure 31. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager RSTP Menu The current protocol version is RSTP 1 - Force Version ..
  • Page 113 AT-S39 User’s Guide 2. Adjust the parameters as needed. The parameters are defined below. 1 - Force Version This selection determines whether the bridge will operate with RSTP or in an STP-compatible mode. If you select RSPT, the bridge will operate all ports in RSTP, except for those ports that receive STP BPDU packets.
  • Page 114 Section II: Local and Telnet Management 6 - Bridge Identifier The MAC address of the bridge. The bridge identifier is used as a tie breaker in the selection of the root bridge when two or more bridges have the same bridge priority value. This value cannot be changed.

  • Page 115: Configuring Rstp Port Settings

    1. From the Spanning Tree Menu, type 4 to select RSTP Configuration. Settings 2. From the RSTP Configuration menu, type P to select RSTP Port Parameters. The RSTP Port Parameters menu is shown in Figure 31: Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager RSTP Port Parameters The current protocol version is RSTP.

  • Page 116: Figure 33 Configure Rstp Port Settings Menu

    Section II: Local and Telnet Management The Configure RSTP Port Settings menu is shown in Figure 33. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Configure RSTP Port Settings Configuring Ports 4 to 4 1 - Port Priority ..128 2 - Port Cost ..
  • Page 117 AT-S39 User’s Guide M - MCHECK This option instructs the bridge to send out RSTP BPDU packets for several seconds from the selected port. The purpose is to determine if there are any RSTP or STP bridges connected to the port.

  • Page 118: Chapter 10 Virtual Lans Overview

    Chapter 10 Virtual LANs Overview This chapter contains overviews of tagged and port-based VLANs and the Basic VLAN Mode. It also explains how to select a VLAN mode. For the procedures for creating tagged and port-based VLANs, refer to the next chapter.

  • Page 119: Vlan Overview

    AT-S39 User’s Guide VLAN Overview A VLAN is a group of ports on an Ethernet switch that form a logical Ethernet segment. The ports of a VLAN form an independent traffic domain where the traffic generated by the nodes of a VLAN remains within the VLAN.

  • Page 120: Vlan Modes

    Section II: Local and Telnet Management But with VLANS, you can change LAN segment assignments through the switch’s AT-S62 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.

  • Page 121: User-Configured Vlan Mode Overview

    AT-S39 User’s Guide User-Configured VLAN Mode Overview The user-configured VLANs mode lets you create your own VLANs. You can create two types of VLANs: ❑ Port-based VLANS (discussed in the following section) ❑ Tagged VLANs (see Tagged VLAN Overview on page 128) Port-based Port-based VLANs are the simplest and most common form of a VLAN.
  • Page 122 Section II: Local and Telnet Management If a VLAN consists only of ports located on one physical switch in your network, you would assign it a VID unique from all other VLANs in your network. If a VLAN spans multiple switches, the VID for the VLAN on the different switches should be identical.
  • Page 123 AT-S39 User’s Guide Some switches and switch management programs require that you assign the PVID value for each port manually. However, the AT-S39 management software performs this task automatically. The software automatically assigns a PVID to a port, making it identical to the VID of the VLAN to which the port is an untagged member.

  • Page 124: Figure 34: Port-Based Vlan - Example 1

    Section II: Local and Telnet Management In network configurations with many individual VLANs that span switches, ports are often ineffectively used to interconnect the various VLANs. Port-based Example 1 Figure 34 illustrates an example of one AT-8024 Fast Ethernet Switch with three port-based VLANs.
  • Page 125 AT-S39 User’s Guide Each VLAN has been assigned a unique VID. You assign this number when you create a VLAN. The ports have been assigned PVID values. A port’s PVID is assigned automatically by the management software when you create the VLAN.

  • Page 126: Figure 35: Port-Based Vlan - Example 2

    Section II: Local and Telnet Management Port-based Example 2 Figure 35 illustrates more port-based VLANs. In this example, two VLANs span more than one Ethernet switch. Engineering VLAN (VID 3) Sales VLAN Production VLAN (VID 4) (VID 2) AT-8024 Ethernet Switch AT-8024 RS-232 TERMINAL PORT 10Base-T / 100Base-TX Fast Ethernet Switch...
  • Page 127 AT-S39 User’s Guide The table below lists the port assignments for the Sales, Engineering, and Production VLANs on the switches: Switch Sales VLAN Engineering VLAN Production VLAN (VID 2) (VID 3) (VID 4) AT-8024 (top) Ports 1 - 6, 18 (PVID 2)

  • Page 128: Tagged Vlan Overview

    Section II: Local and Telnet Management Tagged VLAN The second type of user-configured VLAN supported by the AT-8000 Series switch is the tagged VLAN. VLAN membership in a tagged VLAN is Overview determined by information within the frames that are received on a port. This contrasts to a port-based VLAN, where the PVIDs assigned to the ports determine VLAN membership.
  • Page 129 AT-S39 User’s Guide ❑ Port VLAN Identifier Note For explanations of VLAN name and VLAN identifier, refer back to VLAN Name and VLAN Identifier on page 121. Tagged and Untagged Ports You must specify which ports are members of the VLAN. In the case of a tagged VLAN, VLAN members are usually a combination of both tagged and untagged ports.

  • Page 130: Figure 36 Example Of A Tagged Vlan

    Section II: Local and Telnet Management ❑ The AT-8000 Series switch can support up to 32 tagged and port- based VLANS. Tagged VLAN Example Figure 36 illustrates how tagged ports can be used to interconnect IEEE 802.1Q-based products. Engineering VLAN (VID 3) Legacy Server Production VLAN...
  • Page 131 AT-S39 User’s Guide The port assignments for the VLANs are as follows: Switch Sales VLAN (VID 2) Engineering VLAN (VID 3) Production VLAN (VID 4) Untagged Ports Tagged Ports Untagged Ports Tagged Ports Untagged Ports Tagged Ports AT-8024 1 to 5, 18...

  • Page 132: Basic Vlan Mode Overview

    Section II: Local and Telnet Management Basic VLAN Mode Overview The Fast Ethernet switches support a special VLAN configuration referred to as Basic VLAN Mode. When the Basic VLAN Mode is activated, frames are forwarded based solely on MAC addresses. All VLAN information, including PVIDs assigned to ports and VLAN tags in tagged frames, is ignored.

  • Page 133: Setting The Vlan Mode

    AT-S39 User’s Guide Setting the VLAN Mode The procedure in this section explain how to set the switch for either the user configured (Tagged) VLAN mode, which supports tagged and port- based VLANs, or the Basic VLAN mode. The default setting for the switch is the user configured (Tagged) VLAN mode.

  • Page 134: Creating Port-Based And Tagged Vlans

    Chapter 11 Creating Port-based and Tagged VLANs This chapter contains procedures for creating, modifying, and deleting user-configured VLANs from a local or Telnet management session. To create VLANs, the switch’s VLAN mode must be set to the User Configure (Tagged) VLAN mode, which is the default setting. For instructions on setting the switch mode, please refer to Setting the VLAN Mode on page 133.

  • Page 135: Creating A New Port-Based Or Tagged Vlan

    To create a new port-based or tagged VLAN, perform the following procedure: 1. From the Main Menu, type 2 to select VLAN Menu. The VLAN Menu is shown in Figure 37. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager VLAN Menu 1 - VLANs Status ....Enabled...

  • Page 136: Figure 39 Create Vlan Menu

    Section II: Local and Telnet Management 3. From the Configure VLANs menu, type 1 to select Create VLAN. The Create VLAN menu is shown in Figure 39. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Create VLAN 1 - VLAN Name ....
  • Page 137 AT-S39 User’s Guide has VLANs using VIDs 2 through 24, the AT-S39 software will still use VID 2 as the default value for the first VLAN you create on the new switch, even though that VID number is already being used by another VLAN on the network.
  • Page 138 Section II: Local and Telnet Management 12. Press Esc or type R to return to the Configure VLANS menu. To verify that the VLAN was created correctly, complete steps 13 through 14. Otherwise, you can repeat this procedure to create additional VLANs. 13.

  • Page 139: Example Of Creating A Port-Based Vlan

    AT-S39 User’s Guide Example of Creating a Port-based VLAN The following procedure creates the Sales VLAN illustrated in Figure 34 on page 124. This VLAN will be assigned a VID of 2 and will consist of four untagged ports, Ports 1 to 4. The VLAN will not contain any tagged ports and the VLAN traffic will not be mirrored on another port.

  • Page 140: Example Of Creating A Tagged Vlan

    Section II: Local and Telnet Management Example of Creating a Tagged VLAN The following procedure creates the Engineering VLAN in the top switch illustrated in Figure 36 on page 130. This VLAN will be assigned a VID of 3. It will consist of four untagged ports, Ports 9, 10, 11, and 20, and two tagged ports, Ports 8 and 16.

  • Page 141: Modifying A Vlan

    2. From the VLAN Menu, type 5 to select Configure VLANS. 3. From the Configure VLANS menu, type 2 to select Modify a VLAN. The Modify a VLAN menu is shown in Figure 40. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Modify VLAN 1 - VLAN ID (VID) ..
  • Page 142 Section II: Local and Telnet Management When changing a VLAN’s name, observe the following guidelines: ❑ A VLAN’s new name cannot be the same as the name of another VLAN on the same switch. For example, if the switch already contains a VLAN called Sales, you cannot change an existing VLAN’s name to Sales.
  • Page 143 AT-S39 User’s Guide ❑ If the VLAN does not contain untagged ports, leave this field empty. ❑ To remove all untagged ports from a VLAN, enter a 0 (zero) for this value. ❑ You cannot remove untagged ports directly from the Default_VLAN.

  • Page 144: Displaying Vlan Information

    Section II: Local and Telnet Management Displaying VLAN Information To view the name, VID number, and member ports of all the VLANs on a switch, perform the following procedure: 1. From the Main Menu, type 2 to select VLAN Menu. 2.

  • Page 145: Deleting A Vlan

    2. From the VLAN Menu, type 5 to select Configure VLANS. 3. From the Configure VLANS menu, type 3 to select Delete VLAN. The Delete a VLAN menu is shown in Figure 42. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Delete a VLAN 1 - VLAN ID (VID) ..
  • Page 146 Section II: Local and Telnet Management 6. Type D to delete the VLAN or R to cancel the procedure. The following confirmation prompt is displayed: Are you sure you want to delete this VLAN [Yes/No] -> 7. Type Y to delete the VLAN or N to cancel the procedure. Press Return. A confirmation message is displayed: 8.

  • Page 147: Deleting All Vlans

    AT-S39 User’s Guide Deleting All VLANs This section contains the procedure for deleting all port-based and tagged VLANs, except the Default_VLAN, on a switch. Note To delete selected VLANs, perform the procedure Deleting a VLAN on page 145. To delete all VLANs on a switch, perform the following procedure: 1.

  • Page 148: Displaying Pvids And Priorities

    Section II: Local and Telnet Management Displaying PVIDs and Priorities The following procedure displays a window that lists the PVIDs for all the ports on the switch. The window also contains the current priority queue settings for each port. To display the PVID settings on the switch, perform the following procedure: 1.

  • Page 149: Enabling Or Disabling Ingress Filtering

    AT-S39 User’s Guide Enabling or Disabling Ingress Filtering There are certain rules that a switch follows as it receives and forwards an Ethernet frame. There are rules for frames as they enter a port (called ingress rules) and rules for when a frame is transmitted out a port (called egress rules).
  • Page 150 Section II: Local and Telnet Management There is one other thing that should be mentioned about ingress filtering and tagged packets, and that is the priority tag. Each tagged frame has a priority tag in it that instructs the switch as to the importance of the frame.

  • Page 151: Designating A Management Vlan

    AT-S39 User’s Guide Designating a Management VLAN The management VLAN is the VLAN on which the AT-S39 management software expects to receive remote management packets. This VLAN is important if you will be managing a switch remotely using Telnet or a web browser, or through the enhanced stacking feature of the switch.
  • Page 152 Section II: Local and Telnet Management Now assume that you decide to create a VLAN called NMS with a VID of 24 for the sole purpose of remote network management. For this, you need to create the NMS VLAN on each AT-8000 Series switch you want to manage remotely, being sure to assign each NMS VLAN the VID of 24.

  • Page 153: Chapter 12 Multiple Vlan Modes

    Chapter 12 Multiple VLAN Modes This chapter describes the Multiple VLAN Modes and how to select a mode. This chapter contains the following sections: ❑ Multiple VLAN Modes Overview on page 154 ❑ Activating or Deactivating a Multiple VLAN Mode on page 159 ❑...

  • Page 154: Multiple Vlan Modes Overview

    Section II: Local and Telnet Management Multiple VLAN Modes Overview The Multiple VLAN modes simplify the task of configuring the switch in network environments that require a high degree of network segmentation. In the multiple VLAN modes, the ports on a switch are prohibited from forwarding traffic to each other and are only allowed to forward traffic to a user designated uplink port.
  • Page 155 AT-S39 User’s Guide When you activate the 802.1Q-compliant VLAN mode, you are asked to specify the uplink port for all the client VLANs. Once you have specified the port, the switch automatically configures the VLANs. Table 8 is an example of this multiple VLAN mode. It shows the client VLANs on a switch that supports 26 ports.

  • Page 156: Non-802.1Q Compliant Multiple Vlan Mode

    Section II: Local and Telnet Management VLAN Name Untagged Port Tagged Port Client_VLAN_18 Client_VLAN_19 Client_VLAN_20 Client_VLAN_21 Client_VLAN_22 Client_VLAN_23 Client_VLAN_24 Client_VLAN_25 Client_VLAN_26 Note Remote management of the switch is possible only through the uplink port. Non-802.1Q The Non-802.1Q Compliant Multiple VLAN mode is appropriate when the device connected to the uplink port is non-802.1Q compatible, Compliant meaning that the device cannot handle tagged packets.
  • Page 157 AT-S39 User’s Guide Table 9 is an example of this mode. The table lists the VLANs on a switch that supports 26 ports where port 15 was selected as the uplink port. Ports 1 to14 and 16 to 26 are configured as untagged Client VLANs. Port 15, the uplink port, is configured as the Uplink VLAN that contains all ports as members.

  • Page 158: Preserving User-Configured Vlans

    Section II: Local and Telnet Management VLAN Name Untagged Port Tagged Port Client_VLAN_23 23,15 Client_VLAN_24 24,15 Client_VLAN_25 25,15 Client_VLAN_26 26,15 Caution The non-802.1Q-Compliant Multiple VLAN mode does not protect the switch from VLAN leakage. If a packet arrives on the uplink port containing a destination MAC address not in the MAC address table, the switch will broadcast the packet out all ports, except the uplink port.

  • Page 159: Activating Or Deactivating A Multiple Vlan Mode

    AT-S39 User’s Guide Activating or Deactivating a Multiple VLAN Mode The following procedure explains how to enable or disable a multiple VLANs mode on an AT-8000 Series switch. Note The VLAN mode on the switch must be set to User Configured (Tagged) VLAN mode, and not the Basic Mode, for the unit to operate in a multiple VLAN mode.

  • Page 160: Displaying Vlan Information

    2. From the VLAN Menu, type 7 to select Show VLANs. The Show VLANs window is displayed. An example of the window is shown in Figure 44. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Show VLANs...

  • Page 161: Chapter 13 Mac Address Table

    Chapter 13 MAC Address Table The chapter contains the procedures for viewing the static and dynamic MAC address table. This chapter contains the following sections: ❑ MAC Address Overview on page 162 ❑ Displaying MAC Addresses on page 164 ❑ Adding Static Unicast and Multicast MAC Addresses on page ❑...

  • Page 162: Mac Address Overview

    Section II: Local and Telnet Management MAC Address Overview The hardware devices that you connect to your network have unique MAC addresses assigned by the device manufacturers. For example, every network interface card that you use to connect your computers to your network has a MAC address assigned to it by the adapter’s manufacturer.
  • Page 163 AT-S39 User’s Guide 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.

  • Page 164: Displaying Mac Addresses

    To display the MAC address table, perform the following procedure: 1. From the Main Menu, type 6 to select MAC Address Tables. The MAC Address Table menu is shown in Figure 45. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager...

  • Page 165: Figure 46 Show All Mac Addresses Window

    AT-S39 User’s Guide The management software displays the MAC addresses. Figure 46 is an example of the Show All MAC Addresses window, which displays both static and dynamic MAC addresses. The static MAC address window is exactly the same, except for the title and the fact that it displays only static MAC addresses.
  • Page 166 Section II: Local and Telnet Management The port numbering scheme is from right to left. As an example, assume that ports 1 through 4 on the switch were members of the same multicast group. This would be represented in the column as follows: “0000000F”.

  • Page 167: Adding Static Unicast And Multicast Mac Addresses

    AT-S39 User’s Guide Adding Static Unicast and Multicast MAC Addresses This section contains the procedure for adding static unicast and multicast addresses to the switch. You can assign up to 255 static MAC addresses per port on an AT-8000 Series switch.

  • Page 168: Deleting Mac Addresses

    Section II: Local and Telnet Management Deleting MAC Addresses The following procedure explains how to delete a static, dynamic, or multicast MAC address from the MAC address table. To delete an address from the MAC address table, perform the following procedure: 1.

  • Page 169: Deleting All Dynamic Mac Addresses

    AT-S39 User’s Guide Deleting All Dynamic MAC Addresses The management software allows you to purge the MAC address table of all dynamic MAC addresses. Once the table has been purged, the switch immediately begins to relearn the MAC addresses as frames are received on the ports.

  • Page 170: Viewing Mac Addresses By Port

    Section II: Local and Telnet Management 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.

  • Page 171: Identifying A Port Number By Mac Address

    AT-S39 User’s Guide Identifying a Port Number by MAC Address In some situations, you might want to know which port a particular MAC address was learned. You could display the MAC address table and scroll through the list looking for the MAC address. But if the switch is part of a large network, finding the address could prove difficult.

  • Page 172: Viewing The Mac Addresses Of A Vlan

    Section II: Local and Telnet Management 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.

  • Page 173: Changing The Aging Time

    AT-S39 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 sent to or received from a particular MAC address in the table after the period specified by the aging time, the switch deletes the address.

  • Page 174: Chapter 14 Class Of Service

    Chapter 14 Class of Service This chapter contains the procedures for configuring the Class of Service (CoS) feature of the AT-S39 software. Sections in the chapter include: ❑ Class of Service Overview on page 175 ❑ Configuring CoS on page 177...

  • Page 175: Class Of Service Overview

    AT-S39 User’s Guide Class of Service Overview When a port on an Ethernet switch becomes oversubscribed—its egress queues contain more packets than the port can handle in a timely manner—the port may be forced to delay the transmission of some packets.
  • Page 176 One last thing to note is that the AT-S39 software does not change the priority level in a tagged packet. The packet leaves the switch with the same priority it had when it entered.

  • Page 177: Configuring Cos

    3. Enter the port where you want to configure CoS. You can configure only one port at a time. Press Return. The Configure COS Priorities menu is shown in Figure 47. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Configure COS Priorities 1 - Port Number .....
  • Page 178 Section II: Local and Telnet Management Note The tagged information in a frame is not changed as the frame traverses the switch. A tagged frame leaves a switch with the same priority level that it had when it entered. The default for this parameter is No, meaning that the priority level of tagged frames is determined by the priority level specified in the frame itself.

  • Page 179: Chapter 15 Igmp Snooping

    Chapter 15 IGMP Snooping This chapter explains how to activate and configure the Internet Group Management Protocol (IGMP) snooping feature on the switch. Sections in the chapter include: ❑ IGMP Snooping Overview on page 180 ❑ Activating IGMP Snooping on page 182 ❑...

  • Page 180: Igmp Snooping Overview

    This improves network performance by restricting multicast packets only to router ports where host nodes are located. The AT-S39 management software supports IGMP Version 1 and Version 2. One of the differences between the two versions is how a host node indicates that it no longer wants to be a member of a multicast group.
  • Page 181 AT-S39 User’s Guide Without IGMP snooping, a switch would have to flood multicast packets out all of its ports, except the port on which it received the packet. Such flooding of packets can negatively impact switch and network performance. The AT-8000 Series switch supports both IGMP Version 1 and Version 2.

  • Page 182: Activating Igmp Snooping

    Configuration. 3. From the Advanced Configuration menu, type 1 to select IGMP Snooping Configuration. The IGMP Snooping Configuration menu is shown in Figure 48. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager IGMP Snooping Configuration 1 - IGMP Snooping Status ..Disabled 2 - Multicast Host Topology ..
  • Page 183 AT-S39 User’s Guide stops sending reports. The switch responds by immediately ceasing the transmission of further multicast packets out the port where the host node is connected. The Multi-Host setting is appropriate if there is more than one host node connected to a switch port, such as when a port is connected to an Ethernet hub to which multiple host nodes are connected.
  • Page 184 Section II: Local and Telnet Management 5 - Multicast Router Port(s) Specifies the port on the switch to which the multicast router is detected. You can let the switch determine this automatically by selecting Auto Detect, or you can specify the port yourself by entering a port number.

  • Page 185: Displaying A List Of Host Nodes

    AT-S39 User’s Guide Displaying a List of Host Nodes You can use the AT-S39 software to display a list of the multicast groups on a switch, as well as the host nodes. To display the list, perform the following procedure: 1.

  • Page 186: Displaying A List Of Multicast Routers

    A multicast router is a router that is receiving multicast packets from a multicast application and transmitting the packets to host nodes. You can use the AT-S39 software to display a list of the multicast routers that are connected to the switch.

  • Page 187: Broadcast Storm Control

    Chapter 16 Broadcast Storm Control This chapter contains the procedures for configuring the broadcast storm control feature of the AT-S39 management software. Sections in the chapter include: ❑ Broadcast Storm Control Overview on page 188 ❑ Configuring the Interval Timer on page 190...

  • Page 188: Broadcast Storm Control Overview

    Should the performance of your network be impacted by heavy broadcast traffic, you can use the AT-S39 management software to limit the number of broadcast frames forwarded by the switch and so restrict their number.
  • Page 189 (transmit out) up to 200 broadcast frames every 100 milliseconds. If the maximum is exceeded during the time interval, the port discards any additional broadcast frames and does not forward them. Note The AT-S39 default setting is no Broadcast Storm Control on the switch.

  • Page 190: Configuring The Interval Timer

    2. From the System Configuration Menu, type A to select Advanced Configuration. 3. From the Advanced Configuration Menu, type 2 to select Broadcast Timers Setup. The Broadcast Storm Control menu is shown in Figure Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Broadcast Storm Control 1 - Timer for 10/100 MB ports ..

  • Page 191: Configuring The Maximum Broadcast Frame Count

    AT-S39 User’s Guide Configuring the Maximum Broadcast Frame Count To specify the maximum number of broadcast frames a port on the switch can transmit, perform the following procedure: 1. From the Main Menu, type 1 to select Port Menu. 2. From the Port Menu, type 1 to select Port Configuration.

  • Page 192: Tacacs+ And Radius Protocols

    Chapter 17 TACACS+ and RADIUS Protocols This chapter contains the procedure for configuring the two authentication protocols TACACS+ and RADIUS. Sections in the chapter include: ❑ TACACS+ and RADIUS Overview on page 193 ❑ Configuring the Authentication Client Software on page 196...

  • Page 193: Tacacs+ And Radius Overview

    The AT-S39 software comes with TACACS+ and RADIUS client software. You can use the client software to add two security features to the switch.
  • Page 194 Section II: Local and Telnet Management Note The switch communicates with the authentication server via the switch’s management VLAN. Consequently, the node functioning as the authentication server must be communicating with the switch through a switch port that is a member of that VLAN. The default management VLAN is Default_VLAN.

  • Page 195: Functions Of An Authentication Protocol

    The access level will be either Manager or Operator. The final function of the TACACS+ protocol is accounting, which keeps track of user activity on network devices. The AT-S39 management software does not support this function. Note The AT-S39 management software does not support the two earlier versions of the TACACS+ protocol, TACACS and XTACACS.

  • Page 196: Configuring The Authentication Client Software

    1. From the Main Menu, type 4 to select Administration Menu. 2. From the Administration Menu, type A to select Server-based Authentication. The Authentication Menu is shown in Figure 52. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Authentication Menu 1 - Server-based Authentication ..

  • Page 197: Figure 53 Authentication Menu (Tacacs+)

    AT-S39 User’s Guide 5. To configure TACACS+, do the following: a. Type 3 to select TACACS+ Configuration. The following menu is displayed: Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Authentication Menu 1 - TAC Server 1 ....0.0.0.0 2 - TAC Server 2 ....
  • Page 198 Section II: Local and Telnet Management 4 - TAC Server Order You use this selection to indicate the order in which you want the switch to query the TACACS+ servers for logon authentication. Of course, you can skip this option if you specified only one IP address.

  • Page 199: Figure 54 Radius Client Configuration

    6. To configure the RADIUS protocol, from the Authentication Menu in Figure 52 on page 196 do the following: a. Type 4 to select RADIUS Configuration. The following menu is displayed: Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager RADIUS Client Configuration 1 - Global Encryption Key .....

  • Page 200: Figure 55 Radius Server Configuration

    Use these parameters to specify the IP addresses of up to three network servers containing the RADIUS server software. Selecting one of the options displays the following menu: Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager RADIUS Server 1 Configuration 1 - Server IP Address ....
  • Page 201 AT-S39 User’s Guide RADIUS client software for the 802.1x port-based access control feature, but not for the manager accounts feature, leave this option disabled. The following prompt is displayed: Server Based User Authentication (E-Enabled, D- Disabled) -> e. Type E to enable the manager account feature on the switch or D to disable it.

  • Page 202: 802.1X Port-Based Access Control

    Chapter 18 802.1x Port-Based Access Control This chapter contains an overview and procedures for the 802.1x port- based access control feature. Sections are as follows: ❑ 802.1x Port-based Access Control Overview on page 203 ❑ Enabling and Disabling Port Access Control on page 209 ❑...

  • Page 203: 802.1X Port-Based Access Control Overview

    This port security method uses the RADIUS authentication protocol. The AT-S39 software comes with RADIUS client software. If you have already read Chapter 17, TACACS+ and RADIUS Protocols on page 192, then...

  • Page 204: Authentication Process

    Section II: Local and Telnet Management ❑ Authentication server - The authentication server is the network device that has the RADIUS server software. This is the device that will do the actual authenticating of the user names and password from the supplicants. The AT-8524M switch itself does not authenticate the username and passwords from the clients.

  • Page 205: Port Roles

    1. You must install RADIUS server software on one or more of your network servers or management stations. Authentication protocol server software is not available from Allied Telesyn. Funk Software Steel-Belted Radius and Free Radius have been verified as fully compatible with the AT-S39 management software.

  • Page 206: Port-Based Access Control Guidelines

    House Aegis client software have been verified as fully compatible with the AT-S39 management software. 3. You must configure and activate the RADIUS client software in the AT-S39 management software. The default setting for the authentication protocol is disabled. You will need to provide the following information: ❑...
  • Page 207 AT-S39 User’s Guide Note Connecting multiple supplicants to a port set to the authenticator role does not conform to the IEEE 802.1x standard, can introduce security risks, and can result in undesirable switch behavior. To avoid this, Allied Telesyn recommends not using the authenticator role on a port that is connected to more than one end node, such as a port connected to another switch or a hub.

  • Page 208: Figure 56 Port-Based Authentication Across Multiple Switches

    Section II: Local and Telnet Management ❑ Ports used to interconnect switches should be set to the none role, as illustrated in Figure 56. Switch A AT-8024 Port 2 in Port 24 in None Role None Role Port 21 in RADIUS None Role Authentication...

  • Page 209: Enabling And Disabling Port Access Control

    The Port Menu is shown in Figure 12 on page 66. 2. Type 6 to select Port Access Control. The Port Access Control menu is shown in Figure 57. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Port Access Control 1 - Port Access Control ....
  • Page 210 Section II: Local and Telnet Management Note Option 2 - Authentication Method cannot be changed. 802.1x port- based access control is supported only with the RADIUS authentication protocol. It is not supported with TACACS+. 3. Type 1 to select Port Access Control. The following prompt is displayed: Port Access Control (E-Enable, D-Disable): 4.

  • Page 211: Configuring Port Access Control Parameters

    Enter ports list -> 4. Enter the port you want to configure. You can specify more than one port at a time. Press Return. The following menu is displayed. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager...

  • Page 212: Figure 59 Configure Port Access Parameters Menu

    Section II: Local and Telnet Management Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Configure Port Access Parameters Configuring Ports 3 0 - Port Role ..... Authenticator 1 - Port Control ..Auto 2 - Quiet Period ..60 3 - Tx Period .....
  • Page 213 AT-S39 User’s Guide ❑ Force-unauthorized: Causes the port to remain in the unauthorized state, ignoring all attempts by the client to authenticate. The switch cannot provide authentication services to the client through the interface 2 - Quiet Period Sets the number of seconds that the switch remains in the quiet state following a failed authentication exchange with the client.

  • Page 214: Viewing Port Access Status

    2. In the Port menu, type 6 to select the Port Access Control menu. 3. From the Port Access Control Menu, type 5 to select Display Port Access Status. The Port Access Status is displayed (see Figure 60). Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager...

  • Page 215: Chapter 19 Ethernet Statistics

    Chapter 19 Ethernet Statistics This chapter contains the procedures for displaying data traffic statistics. Sections in the chapter include: ❑ Displaying Port Statistics on page 216 ❑ Displaying Switch Statistics on page 218...

  • Page 216: Displaying Port Statistics

    To display Ethernet port statistics, perform the following procedure: 1. From the Main Menu, type 7 to select Ethernet Statistics. The Ethernet Statistics menu is shown in Figure 61. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager...
  • Page 217 AT-S39 User’s Guide CRC Error (CRC_ERROR) Number of packets with a cyclic redundancy check (CRC) error but with the proper length (64-1518 bytes) received on the port. Undersize Packets (UNDERSIZE) Number of packets that were less than the minimum length specified by IEEE 802.3 (64 bytes including the CRC) received on...

  • Page 218: Displaying Switch Statistics

    2. From the Ethernet Statistics menu, type 2 to select Display Module Statistics. The statistics for the entire switch are displayed in the Display Module Statistics window, shown in Figure 62. Allied Telesyn Ethernet Switch AT-8024 - AT-S39 Sales Switch Login Privilege: Manager Display Module Statistics Ethernet statistics for this module TOTAL_COUNT ....
  • Page 219 AT-S39 User’s Guide Received Broadcast Number of broadcast packets received on the switch. Received Multicast Number of multicast packets received on the switch. CRC Error Number of packets with a cyclic redundancy check (CRC) error but with the proper length (64-1518 bytes) received by the switch.

  • Page 220: File Downloads And Uploads

    ❑ Uploading Files from a Local Management Session on page ❑ Uploading Files from a Remote Management Session on page Note For instructions on how to obtain the latest version of the AT-S39 management software, refer to Management Software Updates on page 18.

  • Page 221: File Uploads And Downloads Overview

    In all later versions, the files are combined into one image file. You can use the AT-S39 management software to download a new version of the management software and bootloader onto a switch so that a switch always has the latest software.
  • Page 222 AT-8000 Series switches in your network. It simplifies the task of updating the management software on the switches. You can upgrade the AT-S39 software on the master switch, and then instruct the switch to download its software to the other switches in the enhanced stack.

  • Page 223: Downloading Files From A Local Management Session

    ❑ All switch models in the AT-8000 Series use the same management software image. ❑ You can use Xmodem or TFTP. ❑ If you are downloading a new AT-S39 software image, the switch’s current configuration settings (for instance, IP address, port security, and virtual LANs) are not changed.

  • Page 224: Figure 63 Downloads & Uploads Menu

    Here are guidelines that apply to a TFTP download: ❑ There must be a node on your network that contains the TFTP server software. The AT-S39 image file or configuration file to download must be stored on the server. ❑ You should start the TFTP server software before you begin the download procedure.
  • Page 225 Do not reset or power off the unit while it is decompressing the file. If you are downloading a new AT-S39 image file, the conclusion of the download and software initialization process is signalled with this message: Please press <ENTER>...

  • Page 226: Figure 64 Local Management Window

    Section II: Local and Telnet Management 6. To download an AT-S39 image file or configuration using Xmodem, do the following: a. Type X at the prompt displayed in Step 4. The following prompt is displayed: You are going to invoke the Xmodem download utility.

  • Page 227: Figure 65 Send File Window

    AT-S39 User’s Guide The Send File window in Figure 65 is displayed. Figure 65 Send File Window e. Click the Browse button and specify the location and file to be downloaded onto the switch. f. Click on the Protocol field and select as the transfer protocol either Xmodem or, for a faster download, 1K XModem.
  • Page 228 Do not reset or power off the unit while it is decompressing the file. The completion of the download and initialization process of an AT-S39 image file is signalled with this message: Please press <ENTER> key TWICE to proceed with Switch Reboot...

  • Page 229: Downloading Files From A Remote Management Session

    Xmodem or, alternatively, switch-to-switch, as explained in Downloading Files Switch to Switch on page 232. ❑ If you are downloading a new AT-S39 software image, the switch’s current configuration settings (for instance, IP address, port security, and virtual LANs) are not changed.
  • Page 230 Do not reset or power off the unit while it is decompressing the file. The completion of the download and initialization process of an AT-S39 image file is signalled with this message: Please press <ENTER> key TWICE to proceed with Switch Reboot...
  • Page 231 AT-S39 User’s Guide The download process is complete once the switch finishes the reset process. The new AT-S39 image file or configuration file is now active on the switch. 7. To continue managing the switch, you must reestablish your management session.

  • Page 232: Downloading Files Switch To Switch

    BOOTP/DHCP status. Caution Installing a new AT-S39 image file or configuration file on a switch involves a switch reset. Some network traffic may be lost. A configuration file should only be downloaded onto a switch of the same model from which the file originated (for example, AT-8024M to AT-8024M).
  • Page 233 S - Sort Switches in New Order. 5. Do one of the following: ❑ To download both the AT-S39 software image and bootloader on the master switch to another AT-8000 Series switch, type I to select Image Download to Remote Switches.
  • Page 234 10. Press the Return key twice to reset the switch. Some network traffic may be lost during the system reset. The download process is now complete. The new AT-S39 image file or configuration file is now active on the switch.

  • Page 235: Uploading Files From A Local Management Session

    IP address. Note It is not recommended that you upload an AT-S39 software image onto a management workstation for download onto another switch. New AT-S39 software images for download onto a switch should be obtained from the Allied Telesyn web site.
  • Page 236 Uploads. The Downloads and Uploads menu in Figure 63 on page 224 is displayed. 4. To upload the AT-S39 software image and bootloader from the switch, type 3. To upload a configuration file, type 4. The following prompt is displayed: Upload Method/Protocol [X-Xmodem, T-TFTP]: 5.

  • Page 237: Figure 67 Local Management Window

    AT-S39 User’s Guide Steps d. through h. illustrate how you would upload a file using the Hilgraeve HyperTerminal program. d. From the HyperTerminal main window, select the Transfer menu. Then select Receive File from the pull-down menu, as shown in Figure 67.

  • Page 238: Figure 69 Receive Filename Window

    Section II: Local and Telnet Management g. Click Receive. The Receive Filename window is shown in Figure Figure 69 Receive Filename Window The extension for an image file should be “.img” and the extension for a configuration file should be “.cfg.” The switch uploads the file from the switch to your computer.

  • Page 239: Uploading Files From A Remote Management Session

    Uploads. The Downloads and Uploads menu is shown in Figure 63 on page 224. 3. To upload the AT-S39 image, type 3. To upload the configuration file, type 4. The following prompts are displayed: Only TFTP uploads are available for a remote access TFTP Server IP Address: 4.
  • Page 240 Section II: Local and Telnet Management 5. Enter a filename for the image file or configuration file. This is the name by which the file will be stored on the TFTP server. Once the filename has been specified, the upload begins. File upload takes only a few moments.

  • Page 241: Web Browser Management

    Section III Web Browser Management The chapters in this section explain how to manage an AT-8024 or AT-8024GB Fast Ethernet switch using a web browser. The chapters include: ❑ Chapter 21, Starting a Web Browser Management Session on page 242 ❑...

  • Page 242: Starting A Web Browser Management Session

    Chapter 21 Starting a Web Browser Management Session This chapter contains the procedure for starting a management session on an AT-8000 Series switch using a web browser, such as Microsoft Internet Explorer or Netscape Navigator.

  • Page 243: Starting A Web Browser Management Session

    AT-S39 User’s Guide Starting a Web Browser Management Session This section explains how to start a web browser management session. There must be at least one Allied Telesyn enhanced stacking switch on your network that has an IP address. The switch with the IP address is referred to as the master switch.

  • Page 244: Figure 71 Home Page

    The user names cannot be changed. To change a password, refer to Configuring an IP Address and Switch Name on page 41. The window shown in Figure 71 is displayed. Figure 71 Home Page This is the Home page of the management software. In the left portion of the Home page is the main menu: ❑...

  • Page 245: Browser Tools

    AT-S39 User’s Guide Browser Tools You can use the browser tools to move around the AT-S39 menus. Selecting Back on your browser’s toolbar returns you to the previous display. You can also use the browser’s bookmark feature on frequently-used AT-S39 menus and windows.

  • Page 246: Basic Switch Parameters

    ❑ Configuring the SNMP Parameters and Trap IP Addresses on page 254 ❑ Resetting a Switch on page 256 ❑ Pinging a Remote System on page 257 ❑ Returning the AT-S39 Software to the Factory Default Values on page 258...

  • Page 247: Configuring An Ip Address And Switch Name

    AT-S39 User’s Guide Configuring an IP Address and Switch Name Note For guidelines on when to assign an IP address, subnet address, and gateway address to an AT-8000 Series switch, refer to When Does a Switch Need an IP Address? on page 39.

  • Page 248: Figure 72 General Tab Menu - Configuration

    Section III: Web Browser Management The General tab in Figure 72 is displayed. Figure 72 General Tab Menu - Configuration This procedure describes the parameters in the Administration section of the menu. The parameters in the Configuration and Broadcast Storm Control sections are discussed later in this guide. The Reset button at the bottom of the tab resets the switch.
  • Page 249 AT-S39 User’s Guide 3. Change the parameters as desired. The parameters are described below: System Name This parameter specifies a name for the switch (for example, Sales Ethernet switch). Entering a value for this parameter is optional. The name can be up to 30 alphanumeric characters. Spaces are allowed.
  • Page 250 Section III: Web Browser Management The default password for Operator access is “operator”. A password can be from 0 to 20 alphanumeric characters. Passwords are case-sensitive. Caution You should not use spaces or special characters, such as asterisks (*) and exclamation points (!), in a password if you will be managing the switch from a web browser.

  • Page 251: Activating The Bootp And Dhcp Client Software

    AT-S39 User’s Guide Activating the BOOTP and DHCP Client Software For background information on BOOTP and DHCP, refer to the section Activating the BOOTP and DHCP Client Software on page 44. Note The default setting for the BOOTP and DHCP client software is disabled.

  • Page 252: Viewing System Information

    Section III: Web Browser Management Viewing System Information To view basic information about the switch, perform the following procedure: 1. From the Home page, select Monitoring. 2. From the Monitoring menu, select System. 3. Select the General tab. The General tab window is shown in Figure 73s. Figure 73 General Tab Window - Monitoring...
  • Page 253 AT-S39 User’s Guide This window is for viewing purposes only. You cannot change any of the values from this window. The sections in the window are defined below. Diagnostics This section displays the switch’s serial number and the switch’s MAC address. These values cannot be changed.

  • Page 254: Configuring The Snmp Parameters And Trap Ip Addresses

    Section III: Web Browser Management Configuring the SNMP Parameters and Trap IP Addresses To change the switch’s SNMP community strings or to specify the IP addresses of management stations to receive traps from the switch, perform the following procedure: 1. From the Home page, select Configuration. 2.
  • Page 255 AT-S39 User’s Guide GET Community SET Community Trap Community Use these parameters to set a switch’s SNMP community strings. A community string can be up to thirteen characters. Community strings are case sensitive and can contain spaces and special characters, such as an exclamation point (!).

  • Page 256: Resetting A Switch

    Section III: Web Browser Management Resetting a Switch Caution The switch will not forward traffic during the brief period required to reload its operating software. Some network traffic may be lost. To reset a switch, perform the following procedure: 1. From the Home Page, select Configuration. The Configuration menu is displayed with the System option selected by default.

  • Page 257: Pinging A Remote System

    AT-S39 User’s Guide Pinging a Remote System You can instruct the switch to ping a node on your network. This procedure is useful in determining whether a valid link exists between the switch and another device. Note The switch must have an IP address in order for you to perform this procedure.

  • Page 258: Returning The At-S39 Software To The Factory Default Values

    IP address, subnet mask, and gateway address, to their default values. This procedure also deletes any VLANs that you have created on the switch. The AT-S39 software default values can be found in Appendix A, AT-S39 Default Settings on page 331.
  • Page 259 AT-S39 User’s Guide 6. Click OK. The parameter settings are reset to their default values and the switch is reset. 7. To resume managing the switch, you must reestablish your management session.

  • Page 260: Chapter 23 Enhanced Stacking

    Chapter 23 Enhanced Stacking This chapter contains the following procedures: ❑ Setting a Switch’s Enhanced Stacking Status on page 261 ❑ Selecting a Switch in an Enhanced Stack on page 263 Note For background information on enhanced stacking, refer to Enhanced Stacking Overview on page 58.

  • Page 261: Setting A Switch's Enhanced Stacking Status

    AT-S39 User’s Guide Setting a Switch’s Enhanced Stacking Status The enhanced stacking status of the switch can be master, slave, or unavailable. Each status is described below: ❑ Master - A master switch of a stack can be used to manage all other AT-8000 Series switches in a subnet.

  • Page 262: Figure 77 Enhanced Stacking Tab

    Section III: Web Browser Management The Enhanced Stacking tab is shown in Figure 77. Figure 77 Enhanced Stacking Tab 4. Click the desired enhanced stacking status for the switch. 5. Click Apply. The new enhanced stacking status is immediately activated on the switch.

  • Page 263: Selecting A Switch In An Enhanced Stack

    AT-S39 User’s Guide Selecting a Switch in an Enhanced Stack The first thing to do before you perform any procedure on a switch in an enhanced stack is check to be sure you are performing it on the correct switch. This is easy if you assigned system names to your switches. The name of the switch being managed is displayed at the top of every management menu.

  • Page 264: Returning To The Master Switch

    Section III: Web Browser Management Note The master switch on which you started the management session is not included in the list, nor are any switches with an enhanced stacking status of Unavailable. You can sort the switches in the list by switch name or MAC address by clicking on the column headers.

  • Page 265: Chapter 24 Port Parameters

    Chapter 24 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. This chapter contains the following procedures: ❑...

  • Page 266: Configuring Port Parameters

    Section III: Web Browser Management Configuring Port Parameters To configure the parameter settings for a port on a switch, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 1. 3. Select the Port Setting tab. The Port Setting tab is shown in Figure 79.

  • Page 267: Figure 80 Settings For Port Menu

    Figure 80 Settings for Port Menu Note The Default button returns the port settings to the default values. Default values are listed in Appendix A, AT-S39 Default Settings on page 331. If you are configuring multiple ports and the ports have different settings, the Settings for Port menu displays the settings of the lowest numbered port.
  • Page 268 Section III: Web Browser Management Speed and Mode The operating speed and duplex mode of the port. Possible settings for this parameter are: ❑ Auto-Negotiate: The port will Auto-Negotiate both speed and duplex mode. This is the default. ❑ 10Mbps - Half Duplex ❑...
  • Page 269 AT-S39 User’s Guide Broadcast Storm Control Overview on page 188. For instructions on how to set this value, refer to Setting the Maximum Number of Broadcast Frames on page 325. Flow Control Flow control applies only to ports operating in full-duplex mode.
  • Page 270 Section III: Web Browser Management When a twisted pair port on the switch operating in half-duplex mode needs to stop an end node from transmitting data, it forces a collision. A collision on an Ethernet network occurs when two end nodes attempt to transmit data using the same data link at the same time.

  • Page 271: Displaying Port Status And Statistics

    AT-S39 User’s Guide Displaying Port Status and Statistics The procedure in this section displays the operating status of the ports on a switch and port statistics. You can view a port’s operating speed, duplex mode, MDI/MDI-X configuration, and more. You can also view the operating status of any GBIC modules installed in an AT-8024GB.

  • Page 272: Figure 82 Port Status Window

    Section III: Web Browser Management If you select port status, the Port Status window in Figure 82 is displayed. Figure 82 Port Status Window The information in this window is for viewing purposes only. To adjust port parameters, refer to Configuring Port Parameters on page 266.
  • Page 273 AT-S39 User’s Guide Speed The operating speed of the port. Possible values are: 0010 - 10 Mbps 0100 - 100 Mbps 1000 - 1000 Mbps Dplx The duplex mode of the port. Possible values are half-duplex and full-duplex. Flow The port’s flow control setting. Possible values are: None - No flow control on the port.

  • Page 274: Figure 83 Port Statistics Window

    Section III: Web Browser Management Priority Level The priority queue to which untagged packets are directed when received on the port. A value of 1 to 3 directs untagged packets to the low priority queue while a value of 4 to 7 directs packets to the high priority queue.
  • Page 275 AT-S39 User’s Guide RX_BRDCAST Number of broadcast packets received on the port. TX_COUNT Number of packets transmitted by the port. UNDERSIZE Number of packets that were less than the minimum length specified by IEEE 802.3 (64 bytes including the CRC) received on the port.

  • Page 276: Chapter 25 Port Security

    Chapter 25 Port Security This chapter explains how to display the current port security level on the switch from a web browser management session. Note For background information on port security, refer to Port Security Overview on page 77. Note You must use a local management session to change a switch’s port security level.

  • Page 277: Displaying The Port Security Level

    AT-S39 User’s Guide Displaying the Port Security Level To display the switch’s port security level, perform the following procedure: 1. From the Home page, select Monitoring. 2. From the Configuration page, select Layer 2. 3. From the Layer 2 page, select the Port Security tab.

  • Page 278: Chapter 26 Port Trunks

    Chapter 26 Port Trunks This chapter contains the procedure for creating or deleting a port trunk from a web browser management session. Note For background information and guidelines on port trunking, refer to Port Trunking Overview on page 83.

  • Page 279: Creating Or Deleting A Port Trunk

    AT-S39 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 port trunk on both the switch and end node. Connecting the cables prior to configuring the port trunk will create a loop in your network topology.
  • Page 280 Section III: Web Browser Management To create a port trunk, go to step 4. To delete a port trunk, go to step 5. 4. To create a port trunk, do the following: a. Click the ports that will make up the port trunk. A selected port changes to white.

  • Page 281: Chapter 27 Port Mirroring

    Chapter 27 Port Mirroring This chapter contains the following procedure: ❑ Creating or Deleting a Port Mirror on page 282 Note For background information on port mirroring, refer to Port Mirroring Overview on page 93.

  • Page 282: Creating Or Deleting A Port Mirror

    Section III: Web Browser Management Creating or Deleting a Port Mirror To create or delete a port mirror, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 1. 3. Select the Port Mirroring tab. The management software displays the Port Mirroring menu in Figure 86.
  • Page 283 AT-S39 User’s Guide The port mirror is immediately activated on the switch. You can now connect a data analyzer to the mirror port to monitor the traffic on the selected ports. 5. To disable port mirroring, select “None“ from the Mirroring Port pull- down menu and click Apply.

  • Page 284: Chapter 28 Stp And Rstp

    Chapter 28 STP and RSTP This chapter explains how to configure the STP and RSTP parameters on an AT-8000 Series switch from a web browser management session. Sections in the chapter include: ❑ Enabling or Disabling STP or RSTP on page 285 ❑...

  • Page 285: Enabling Or Disabling Stp Or Rstp

    AT-S39 User’s Guide Enabling or Disabling STP or RSTP The AT-S39 software supports STP and RSTP. Only one spanning tree protocol can be active on the switch at a time. Before you can enable a spanning tree protocol or configure its settings, you must first select it as the active spanning tree protocol on the switch.
  • Page 286 Section III: Web Browser Management 4. To select an active spanning tree protocol, do the following: a. Click STP or RSTP in the Active Protocol Version section of the menu. The default is RSTP. Only one spanning tree protocol can be active on the switch at a time.

  • Page 287: Configuring Stp

    AT-S39 User’s Guide Configuring STP This section contains the following procedures: ❑ Configuring STP Bridge Settings on page 287 ❑ Configuring STP Port Settings on page 289 Configuring STP This section contains the procedure for configuring a bridge’s STP settings.
  • Page 288 Section III: Web Browser Management 2. Adjust the bridge STP settings as needed. The parameters are described below. Bridge Identifier The MAC address of the bridge. The bridge identifier is used as a tie breaker in the selection of the root bridge when two or more bridges have the same bridge priority value.

  • Page 289: Configuring Stp Port Settings

    AT-S39 User’s Guide Note The aging time for BPDUs is different from the aging time used by the MAC address table. 3. After you have made the desired changes, click Apply. Configuring STP To configure STP port settings, do the following: Port Settings 1.
  • Page 290 Section III: Web Browser Management Path Cost Though it says path cost, this is actually the port cost of the port. The spanning tree algorithm uses port cost to decide which port provides the lowest cost path to the root bridge for that LAN. The default values for this parameter are 100 for a 10 Mbps port, 10 for a 100 Mbps port, and 4 for a 1 Gbps port.

  • Page 291: Configuring Rstp

    AT-S39 User’s Guide Configuring RSTP This section contains the following procedures: ❑ Configuring RSTP Bridge Settings on page 291 ❑ Configuring RSTP Port Settings on page 293 Configuring This section contains the procedure for configuring a bridge’s RSTP settings. RSTP Bridge...
  • Page 292 Section III: Web Browser Management 2. Adjust the parameters are needed. The parameters are defined below. Force Version This selection determines whether the bridge will operate with RSTP or in an STP-compatible mode. If you select RSPT, the bridge will operate all ports in RSTP, except for those ports that receive STP BPDU packets.

  • Page 293: Configuring Rstp Port Settings

    AT-S39 User’s Guide Bridge Identifier The MAC address of the bridge. The bridge identifier is used as a tie breaker in the selection of the root bridge when two or more bridges have the same bridge priority value. This value cannot be changed.
  • Page 294 Section III: Web Browser Management 3. Adjust the settings as desired. The parameters are described below. Port Priority This parameter is used as a tie breaker when two or more ports are determined to have equal costs to the root bridge. The range is 0 to 240 in increments of 16.

  • Page 295: Displaying Stp Or Rstp Settings

    AT-S39 User’s Guide Displaying STP or RSTP Settings To display STP or RSTP parameter settings, perform the following procedure: 1. From the Home page, select Monitoring. 2. From the Monitoring menu, select Layer 2. 3. From the Layer 2 page, select the Spanning Tree tab.

  • Page 296: Figure 93 Rapid Spanning Tree Window - Monitoring

    Section III: Web Browser Management The example in Figure 93 is for RSTP. The information in this window is for viewing purposes only. Figure 93 Rapid Spanning Tree Window - Monitoring 5. To view port settings, click a port in the switch and click Status or Settings.

  • Page 297: Chapter 29 Virtual Lans

    Chapter 29 Virtual LANs This chapter explains how to create, modify, and delete port-based and tagged VLANs from a web browser management session. This chapter also explains how to select a multiple VLAN mode. Note For background information on VLANs, refer to Chapter 10, Virtual LANs.

  • Page 298: Creating A New Port-Based Or Tagged Vlan

    Section III: Web Browser Management Creating A New Port-based or Tagged VLAN To create a new port-based or tagged VLAN, perform the procedure below: 1. From the Home page, select Configuration. 2. From the Configuration menu, select Layer 2. 3. From the Layer 2 window, select the VLAN tab. The VLAN menu is shown in Figure 94.

  • Page 299: Figure 95 Add Vlan Menu

    AT-S39 User’s Guide 4. Click Add. The Add VLAN menu is shown in Figure 95. Figure 95 Add VLAN Menu 5. Select the Name field and enter a name for the new VLAN. The VLAN name can be from one to fifteen characters in length. The name should reflect the function of the nodes that will be members of the VLAN (for example, Sales or Accounting).
  • Page 300 AT-8024 switch to a network that already has VLANs using VIDs 2 through 24, the AT-S39 software will still use VID 2 as the default value for the first VLAN you create on the new switch, even though that VID number is already being used by another VLAN on the network.
  • Page 301 AT-S39 User’s Guide Note Ports designated as untagged ports of the new VLAN are automatically removed from their current untagged VLAN assignment. For example, if you are creating a new VLAN on a switch that contains only the Default_VLAN, the ports that you specify as untagged ports of the new VLAN are automatically removed from the Default_VLAN.

  • Page 302: Modifying A Port-Based Or Tagged Vlan

    Section III: Web Browser Management Modifying a Port-based or Tagged VLAN To modify a port-based or tagged VLAN, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration menu, select Layer 2. 3. From the Layer 2 window, select the VLAN tab. The VLAN menu in Figure 94 on page 298 is displayed.

  • Page 303: Deleting A Port-Based Or Tagged Vlan

    AT-S39 User’s Guide Deleting a Port-based or Tagged VLAN To delete a port-based or tagged VLAN from the switch, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration menu, select Layer 2. 3. From the Layer 2 window, select the VLAN tab.

  • Page 304: Displaying Vlans

    Section III: Web Browser Management Displaying VLANs To display the VLANs on a switch, perform the following procedure: 1. From the Home page, select Monitoring. 2. From the Monitoring page, select Layer 2. 3. From the Layer 2 page, select the VLAN tab. The management software displays the window shown in Figure 96.

  • Page 305: Setting The Vlan Mode

    AT-S39 User’s Guide Setting the VLAN Mode The procedures in this section explain how to set the switch for either the user configured (Tagged) VLAN mode, which supports port-based and tagged VLANs, or the Basic VLAN mode. The default setting for the switch is the user configured (Tagged) VLAN mode.

  • Page 306: Selecting A Multiple Vlans Mode

    Section III: Web Browser Management Selecting a Multiple VLANs Mode To select a multiple VLAN mode, perform the procedure below: Note The VLAN mode on the switch must be set to User Configured (Tagged) VLAN mode, and not to Basic Mode, in order for the unit to operate in a multiple VLANs mode.

  • Page 307: Chapter 30 Mac Address Table

    Chapter 30 MAC Address Table This chapter contains instructions on how to view the dynamic and static addresses in the MAC address table of the switch. This chapter contains the following procedure: ❑ Viewing the MAC Address Table on page 308 ❑...

  • Page 308: Viewing The Mac Address Table

    Section III: Web Browser Management Viewing the MAC Address Table To view the MAC address table, perform the following procedure: 1. From the Home page, select either Configuration or Monitoring. 2. Select Layer 2. 3. From the Layer 2 page, select the MAC Address tab. The MAC Address menu is displayed.
  • Page 309 AT-S39 User’s Guide View All Static Addresses This option displays only the static MAC addresses. Static MAC addresses are addresses that you entered manually into the MAC address table. View All IP Multicast Addresses This option displays the multicast MAC addresses.
  • Page 310 Section III: Web Browser Management Indicates whether the traffic received on the port is sent to the switch’s CPU. Yes indicates that the traffic is being sent to the CPU while No indicates it is not. Indicates whether the traffic on the port is being mirrored. Yes means the traffic is being mirrored while No indicates that it is not.

  • Page 311: Adding Static Unicast And Multicast Mac Addresses

    AT-S39 User’s Guide Adding Static Unicast and Multicast MAC Addresses This section contains the procedure for assigning static unicast and multicast address to ports on the switch. You can assign up to 255 static MAC addresses per port. To add a static unicast or multicast address to the MAC address table, perform the following procedure: 1.

  • Page 312: Deleting Mac Addresses

    Section III: Web Browser Management Deleting MAC Addresses To delete a static, dynamic, or multicast MAC address from the switch, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 2. 3. From the Layer 2 page, select the MAC Address tab. The MAC Address menu is shown in Figure 97 on page 308.

  • Page 313: Changing The Aging Time

    AT-S39 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 sent to or received from a particular MAC address in the table after the period specified by the aging time, the switch deletes the address.

  • Page 314: Chapter 31 Class Of Service

    Chapter 31 Class of Service This chapter contains instructions on how to configure CoS. This chapter contains the following procedure: ❑ Configuring CoS on page 315 Note For background information on CoS, refer to Class of Service Overview on page 175.

  • Page 315: Configuring Cos

    AT-S39 User’s Guide Configuring CoS To configure CoS, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 2. 3. From the Layer 2 page, select the CoS tab. The CoS tab is shown in Figure 99.

  • Page 316: Figure 100 Cos Setting For Port Menu

    Section III: Web Browser Management The CoS Settings for Port menu is shown in Figure 100. Figure 100 CoS Setting for Port Menu 6. If you want all tagged and untagged frames received on the port to go to the low priority queue, select any level from Level 0 to Level 3 from the Priority pull-down menu.

  • Page 317: Chapter 32 Igmp Snooping

    Chapter 32 IGMP Snooping This chapter describes how to configure the IGMP snooping feature on the switch. Sections in the chapter include: ❑ Configuring IGMP Snooping on page 318 ❑ Displaying a List of Host Nodes and Multicast Routers on page Note For background information on this feature, refer to IGMP Snooping Overview on page 180.

  • Page 318: Configuring Igmp Snooping

    Section III: Web Browser Management Configuring IGMP Snooping To configure IGMP snooping from a web browser management session, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration menu, select System. 3. Select the IGMP tab. The IGMP tab in Figure 101 is displayed.
  • Page 319 AT-S39 User’s Guide Snoop Topology Defines whether there is only one host node per switch port or multiple host nodes per port. Possible settings are Edge (Single- Host/Port) and Intermediate (Multi-Host/Port). The Edge (Single-Host/Port) setting is appropriate when there is only one host node connected to each port on the switch.
  • Page 320 Section III: Web Browser Management This parameter is useful with networks that contain a large number of multicast groups. You can use the parameter to prevent the switch’s MAC address table from filling up with multicast addresses, leaving no room for dynamic or static MAC addresses.

  • Page 321: Displaying A List Of Host Nodes And Multicast Routers

    AT-S39 User’s Guide Displaying a List of Host Nodes and Multicast Routers You can use the AT-S39 software to display a list of the multicast groups on a switch, as well as the host nodes. You can also view the multicast routers.
  • Page 322 Section III: Web Browser Management Viewing a list of host nodes displays a window containing the following information. The information in the window is for viewing purposes only. Multicast Group The multicast address of the group. Member Port The port(s) on the switch to which one or more host nodes of the multicast group are connected.

  • Page 323: Broadcast Storm Control

    Chapter 33 Broadcast Storm Control This chapter contains instructions on how to configure the Broadcast Storm Control feature on the switch. Sections in the chapter include: ❑ Configuring the Interval Timer on page 324 ❑ Setting the Maximum Number of Broadcast Frames on page Note For background information on this feature, refer to Broadcast Storm Control Overview on page 188.

  • Page 324: Configuring The Interval Timer

    Section III: Web Browser Management Configuring the Interval Timer The interval timer defines the time period used in counting the number of broadcast packets transmitted by a port. A port will not transmit more than its maximum number of broadcast frames during the specified timer interval.

  • Page 325: Setting The Maximum Number Of Broadcast Frames

    AT-S39 User’s Guide Setting the Maximum Number of Broadcast Frames To set the maximum number of broadcast frames you want the ports on the switch to transmit, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 1.

  • Page 326: Tacacs+ And Radius Protocols

    Chapter 34 TACACS+ and RADIUS Protocols This chapter contains instructions on how to configure the authentication protocols. This chapter contains the following procedure: ❑ Configuring TACACS+ and RADIUS on page 327 Note For background information on the authentication protocols, refer to TACACS+ and RADIUS Overview on page 193.

  • Page 327: Configuring Tacacs+ And Radius

    AT-S39 User’s Guide Configuring TACACS+ and RADIUS To configure the authentication protocols, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select System. 3. From the System page, select the Server-based Authentication tab.

  • Page 328: Figure 104 Tacacs+ Configuration Menu

    Section III: Web Browser Management 5. To select an authentication protocol, click either TACACS+ or RADIUS in the Authentication Method section of the menu. The default is TACACS+. Only one authentication protocol can be active on the switch at a time. 6.

  • Page 329: Figure 105 Radius Configuration Menu

    AT-S39 User’s Guide expires and the server has not responded, the switch queries the next TACACS+ server in the list. If there aren’t any more servers, than the switch will default to the standard Manager and Operator accounts. The default is 30 seconds.
  • Page 330 Section III: Web Browser Management b. Configure the parameters as needed. They are described below. Global Encryption Key If all of the TACACS+ servers have the same encryption secret, you can enter the key here. If the servers have different keys, you must specify each key when you specify a server’s IP address.

  • Page 331: At-S39 Default Settings

    Appendix A AT-S39 Default Settings This appendix lists the AT-S39 factory default settings. Management Interface Default Settings The following table lists the management interface default settings. Management Interface Setting Default Manager Login Name manager Manager Password friend Operator Login Name...

  • Page 332: Switch Administration Default Settings

    Appendix A: AT-S39 Default Settings Switch Administration Default Settings The following table describes the switch administration default settings. Administration Setting Default IP Address 0.0.0.0 Subnet Mask 0.0.0.0 Gateway Address 0.0.0.0 System Name None Administrator None Comments None BOOTP/DHCP Disabled MAC Address Aging Time...

  • Page 333: System Software Default Settings

    AT-S39 User’s Guide System Software Default Settings The following table lists the system software default settings. System Software Setting Default Console Startup Mode Menu Enhanced Stacking Default Setting The following table lists the enhanced stacking default setting. Enhanced Stacking Setting...

  • Page 334: Port Configuration Default Settings

    Appendix A: AT-S39 Default Settings Port Configuration Default Settings The following table lists the port configuration default settings. Port Configuration Setting Default Status Enabled Back Pressure Disabled Flow Control None Speed Auto-Negotiation Duplex Mode Auto-Negotiation MDI/MDI-X Auto-MDI/MDIX Class of Service The following table lists the default mappings of IEEE 802.1p priority...

  • Page 335: Spanning Tree Switch Settings

    AT-S39 User’s Guide Spanning Tree Switch Settings The following table describes the Spanning Tree Protocol default settings for the switch. STP Switch Setting Default Spanning Tree Status Disabled Active Protocol Version RSTP STP Default The following table describes the STP default settings.

  • Page 336: Vlan Default Settings

    Appendix A: AT-S39 Default Settings VLAN Default Settings This section provides VLAN default settings. VLAN Setting Default Default VLAN Name Default_VLAN (all ports) Management VLAN ID 1 (Default_VLAN) VLAN Mode User Configured Basic VLAN Mode Disabled Multiple VLANs Modes Disabled Port Security Default Settings The following table lists the port security default settings.

  • Page 337: Server-Based Authentication Default Settings

    AT-S39 User’s Guide Server-Based Authentication Default Settings This section describes the server-based authentication, RADIUS, and TACACS+ client default settings. Server-Based The following table describes the server-based authentication default settings. Authentication Default Settings Server-based Authentication Setting Default Server-based Authentication Disabled Active Authentication Method...
  • Page 338 Appendix A: AT-S39 Default Settings...

  • Page 339: Index

    173, 313 bridge forwarding delay default setting 335 default setting 332 defined, 163 bridge forwarding delay parameter, 108, 113, AT-S39 default settings, 55, 258, 331 288, 292 AT-S39 software security, 50 bridge hello time AT-S39 software updates default setting 335...
  • Page 340 333 defined, 180 console timeout, 50 displaying, 185, 321 host/router timeout interval default setting 334 default values, AT-S39, 55, 258, 331 host/router timeout interval, 183, 319 DHCP activating, 44, 251 defined, 44 IEEE 802.1d standard, 107, 112, 287, 291...
  • Page 341 AT-S39 User’s Guide load distribution methods, 84 mode local management session activating, 159 defined, 22 deactivating, 159 quitting, 34 non-802.1Q compliant, 156 starting, 30 Lock All Ports security level, 78 none port role 205 MAC address aging time default setting 332...
  • Page 342 port priority root bridge, 98 default setting 335 RS232 port, default settings, 31 port role, 212 port role, default setting 336 port security Secure level, port security, 78 configuring, 79 security defined, 77 port access control, 202 displaying, 277 serial number, switch, 53 port trunking server authentication UDP port creating, 89, 279...
  • Page 343 Telnet management session limitations, 24 defined, 23 quitting, 245 quitting, 36 starting, 243 starting, 35 TFTP, downloading and uploading files, 223, 229, 239 txPeriod, 213 unavailable status, defined, 61, 261 user name, default, 243 user-configured VLAN defined, 121 version number, AT-S39, 53...

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