Management Software ® AT-S29 ◆ User’s Guide FOR USE WITH THE AT-8324SX FAST ETHERNET SWITCH PRODUCT VERSION 1.
Copyright 2000 Allied Telesyn International, Corp. 960 Stewart Drive Suite B, Sunnyvale, CA 94086 USA All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn International, Corp. CentreCom is a registered trademark of Allied Telesyn International, Corp. Internet Explorer is a trademark of Microsoft Corporation. Netscape Navigator is a registered trademark of Netscape Communications Corporation.
Table of Contents Preface ...................................................................................................................................................................................................................vii Supported Platform ........................................................................................................................................................................................vii Purpose of This Guide .........................................
Table of Contents Configuring the Switch .................................................................................................................................................................................39 Configuring Port Parameters ............................................................................................................................................................ 41 Viewing the Current Port Configuration ...............................................................
AT-S29 Management Software User’s Guide Port Traffic Class Information ............................................................................................................................................................ 98 Configuring Virtual LANs ..............................................................................................................................................................................99 VLAN Basic Information .......................................................
Preface This guide contains instructions on how to use the AT-S29 software to manage and configure your AT-8324SX Fast Ethernet Switch. Supported Platform Version 1.
Preface Purpose of This Guide This guide is intended for network administrators who are responsible for managing the switches. Network administrators should be familiar with Ethernet switches, Ethernet and Fast Ethernet technology, bridging, and the Spanning Tree Protocol (STP).
AT-S29 Management Software User’s Guide How This Guide is Organized This guide contains the following chapters and appendices: Chapter 1, Switch Management, explains switch configuration options and required switch connections. Chapter 2, Using the System Configuration Program, describes how to configure the switch and its ports using the Telnet program or by connecting a terminal to the console port on the management module.
Preface Where to Find Web-based Guides The Allied Telesyn web site at www.alliedtelesyn.com offers you an easy way to access the most recent documentation and technical information for all of our products. All web-based documentation for this product and other Allied Telesyn products can be downloaded from the web site in pdf format. There are several manuals that you will need in order to manage your Ethernet switch.
AT-S29 Management Software User’s Guide Document Conventions This guide uses several conventions that you should become familiar with first before you begin to install the product. Note Notes provide additional information. Warning Warnings inform you that performing or omitting a specific action may result in bodily injury. Caution Cautions inform you that performing or omitting a specific action may result in equipment damage or loss of data.
Preface Contacting Allied Telesyn Technical Support There are several ways that you can contact Allied Telesyn technical support: online, telephone, fax and e-mail. Online Support You can request technical support online by filling out the Technical Support Form at www.alliedtelesyn.com/forms/support.htm.
AT-S29 Management Software User’s Guide Returning Products Products for return or repair must first be assigned a Return Materials Authorization (RMA) number. A product sent to Allied Telesyn without a RMA number will be returned to the sender at the sender’s expense.
Preface FTP Server If you need a driver for an Allied Telesyn device and you know the name of the driver, you can download the software by connecting directly to our FTP server at ftp://gateway.centre.com. At login, enter ‘anonymous’. Enter your e-mail address for the password as requested by the server at login.
AT-S29 Management Software User’s Guide For Sales or Corporate Information Allied Telesyn International, Corp. 19800 North Creek Parkway, Suite 200 Bothell, WA 98011 Tel: 1 (425) 487-8880 Fax: 1 (425) 489-9191 Allied Telesyn International, Corp.
Preface Tell Us What You Think If you have any comments or suggestions on how we might improve this or other Allied Telesyn documents, please fill out the Send Us Feedback Form at www.alliedtelesyn.com/forms/feedback.htm.
Chapter 1 Switch Management Configuration Options For advanced management capability, the AT-8324SX switch’s AT-BMGMT Management Module provides a menu-driven system configuration program. This program can be accessed by a direct or modem connection to the serial port on the management module (outof-band), or by a Telnet connection over the network (in-band). The management module is based on SNMP (Simple Network Management Protocol).
Switch Management Making Connections for System Configuration The switch includes a menu-driven configuration program. The ASCII interface to this program can be accessed by making a direct connection to the serial port on the Network Management Module, or by a Telnet connection to the switch over the network. This section describes how to access the menu-driven configuration program via: ❑ Serial connection: A terminal or workstation connected to the serial port on the Network Management Module.
Note Use the Network Configuration menu to specify the maximum number of simultaneous Telnet sessions that are supported by the system. In-Band Network Connection The on-board configuration program can be accessed using Telnet from any computer attached to the network. The switch and stack can also be managed by any computer using a Web browser (Internet Explorer 4.0 or above, or Netscape Navigator 4.0 or above), or from a network computer using network management software.
Chapter 2 Using the System Configuration Program Login Screen Once a direct connection to the serial port or a Telnet connection is established, the login screen for the on-board configuration program appears. If this is your first time to log into the configuration program, then the default user names are "admin" and "guest," with no password. The administrator has Read/Write access to all configuration parameters and statistics, while the guest has Read Only access to the management program.
Using the System Configuration Program Main Menu With the system configuration program you can define system parameters, manage and control the switch, the connected stack and all its ports, or monitor network conditions. The figure below of the Main Menu and the following table briefly describe the selections available from this program. Note Options for the currently selected item are displayed in the highlighted area at the bottom of the interface screen. Main Menu ========= System Information Menu ..
AT-S29 Management Software User’s Guide Menu Description System Information Menu: System Information Provides basic system description, including contact information. Switch Information Shows hardware/firmware version numbers, power status, and expansion modules used in the stack. Management Setup Menu: Network Configuration Includes IP setup, Ping facility, HTTP (Web Agent) setup, Telnet enable, and MAC address.
Using the System Configuration Program Menu Description 802.1Q VLAN Base Information Displays basic VLAN information, such as VLAN version number and maximum VLANs supported. 802.1Q VLAN Current Table Information Displays VLAN groups and port members. 802.1Q VLAN Static Table Configuration Configures VLAN groups via static assignments, including setting port members, or restricting ports from being dynamically added to a port by the GVRP protocol. 802.
AT-S29 Management Software User’s Guide System Information Menu Use the System Information Menu to display a basic description of the switch, including contact information, and hardware/ firmware versions. System Information Menu ======================= System Information ... Switch Information ... Use or arrow keys to move. to select.
Using the System Configuration Program Parameter Description System Description System hardware description. System Object ID MIB II object identifier for switch’s network management subsystem (ATI: 207.1.4.42) System Up Time Length of time the current management agent has been running. (Note that the first value is 1/100 seconds.) System Name1 Name assigned to the switch system. System Contact1 Contact person for the system.
AT-S29 Management Software User’s Guide Menu Description Main Board: Hardware Version Hardware version of the main board. Firmware Version System firmware version in ROM. Serial Number MAC address associated with the main board. Port Number Number of ports in this unit. Internal Power Status Power status for the switch. Redundant Power Status Redundant power status for the switch. Expansion Slot 1 Shows module type if inserted (100BaseFX, 1000Base-SX, or 1000Base-LX).
Using the System Configuration Program Management Setup Menu After initially logging onto the system, adjust the communication parameters for your console to ensure a reliable connection (Console Configuration menu). Specify the IP addresses for the agent module (Network Configuration / IP Configuration), and then set the Administrator and User passwords (Console Login Configuration). Remember to record them in a safe place.
AT-S29 Management Software User’s Guide Changing the Network Configuration Use the Network Configuration menu to set the bootup option, configure the switch’s Internet Protocol (IP) parameters, enable the onboard Web Agent, or enable Telnet access. The screen shown below is described in the following table. Network Configuration ================= IP Configuration ... IP Connectivity Test (Ping) ... HTTP Configuration ...
Using the System Configuration Program IP Configuration Use the IP Configuration screen to set the bootup option, or configure the switch’s IP parameters. The screen shown below is described in the following table. Network Configuration IP Configuration ================= Interface Type : Ethernet IP Address : 149.35.19.10 Subnet Mask : 255.255.255.0 Gateway IP : 149.35.1.1 IP State : USER-CONFIG Use or arrow keys to move, other keys to make changes.
AT-S29 Management Software User’s Guide Parameter Default Description Default Gateway 0.0.0.0 Gateway used to pass trap messages from the switch’s agent to the management station. Note that the gateway must be defined if the management station is located in a different IP segment. IP State USERCONFIG Specifies whether IP functionality is enabled via manual configuration, or set by Boot Protocol (BootP).
Using the System Configuration Program HTTP Configuration Use the HTTP Configuration screen to enable/disable the on-board Web Agent, and to specify the TCP port that will provide HTTP service. The screen shown below is described in the following table. Network Configuration: HTTP Configuration ================= HTTP Server : ENABLED HTTP Port Number : 80 Use or arrow keys to move. to select.
AT-S29 Management Software User’s Guide Configuring the Serial Port You can access the on-board configuration program by attaching a VT100 compatible device to the switch’s serial port. (For more information on connecting to this port, refer to the section on Making the Connections Required for System Configuration on page 9.) The communication parameters for this port are accessed from the Serial Port Configuration screen seen below and described in the following table.
Using the System Configuration Program Assigning SNMP Parameters Use the SNMP Configuration screen to display and modify parameters for the Simple Network Management Protocol (SNMP). The switch includes an on-board SNMP agent which monitors the status of its hardware, as well as the traffic passing through its ports. A computer attached to the network, called a Network Management Station (NMS), can be used to access this information. Access rights to the on-board agent are controlled by community strings.
AT-S29 Management Software User’s Guide Configuring Community Names The following figure and table describe how to configure the community strings authorized for trap management access. Up to 5 community names may be entered. SNMP Configuration: SNMP Communities ================= Community Name 1. 2. 3. 4. 5. public private netman Access Status READ ONLY READ/WRITE READ/WRITE ENABLED ENABLED ENABLED Use or arrow keys to move, other keys to make changes.
Using the System Configuration Program Configuring IP Trap Managers The following figure and table describe how to specify management stations that will receive authentication failure messages or other trap messages from the switch. Up to 5 trap managers may be entered. SNMP Configuration: IP Trap Managers ===================== IP Address 1. 2. 3. 4. 5. 149.35.19.20 Community Name Status public DISABLED Use or arrow keys to move. to select.
AT-S29 Management Software User’s Guide Console Login Configuration Use the Management Setup: Console Login Configuration to restrict management access based on specified user names and passwords, or to set the invalid password threshold and timeout. There are two user types, Administrator and Guest. Only the Administrator has write access for parameters governing the SNMP agent. You should therefore assign a user name and password to the Administrator as soon as possible, and store it in a safe place.
Using the System Configuration Program Downloading System Software Using TFTP Protocol to Download Over the Network Use the TFTP Download menu to load software updates into the switch. The download file should be an AT-8324SX compressed binary file from Allied Telesyn; otherwise the agent will not accept it. The success of the download operation depends on the accessibility of the TFTP server and the quality of the network connection.
AT-S29 Management Software User’s Guide Configuring the Switch The Device Control menu is used to set the communication parameters for individual ports and to fine-tune the performance of your switch. Configuration menus are also provided for advanced functions, such as Virtual LANs, port trunking, and port mirroring. Each of the setup screens provided by the configuration menus is described in the following sections. Device Control Menu =================== Port Configuration ... Port Information ...
Using the System Configuration Program Parameter Description 802.1P Configuration Configures default port priorities and queue assignments. 802.1Q VLAN Base Information Displays basic VLAN information, such as VLAN version number and maximum VLANs supported. 802.1Q VLAN Current Table Information Displays VLAN groups and port members. 802.
AT-S29 Management Software User’s Guide Configuring Port Parameters Use the Port Configuration menus to configure any port or module on the switch.
Using the System Configuration Program Viewing the Current Port Configuration The Port Information screen displays the port type, status, link state, and flow control in use, as well as the communication speed and duplex mode. To change any of the port settings, use the configuration menu. The parameters shown in the following figure and table are for the RJ-45 ports.
AT-S29 Management Software User’s Guide Using the Spanning Tree Algorithm The Spanning Tree Algorithm can be used to detect and disable network loops, and to provide backup links between switches, bridges or routers. This allows the switch to interact with other bridging devices (that is, STA compliant switch, bridge or router) in your network to ensure that only one route exists between any two stations on the network. For a more detailed description of how to use this algorithm, refer to Chapter 4.
Using the System Configuration Program Parameter Default Description Spanning Tree Protocol Enabled Enable this parameter to participate in an STA compliant network. Priority 32,768 Device priority is used in selecting the root device, root port, and designated port. The device with the highest priority becomes the STA root device. However, if all devices have the same priority, the device with the lowest MAC address will then become the root device. Enter a value from 0 - 65535.
AT-S29 Management Software User’s Guide Configuring STA for Ports or Modules The following figure and table describe STA configuration for ports or modules. (Note that the Spanning Tree Configuration screen for the expansion slots also indicates module type.
Using the System Configuration Program Viewing the Current Spanning Tree Configuration The Spanning Tree Information screen displays a summary of the STA information for the overall bridge or for a specific port or module. To make any changes to the parameters for the Spanning Tree, use the Spanning Tree Configuration menu. Spanning Tree Information: Selection Menu ============================ STA Bridge Information ... STA Port Information ... Use or arrow keys to move. to select.
AT-S29 Management Software User’s Guide Parameter Description Priority Device priority is used in selecting the root device, root port, and designated port. The device with the highest priority becomes the STA root device. However, if all devices have the same priority, the device with the lowest MAC address will then become the root device. Hello Time The time interval (in seconds) at which the root device transmits a configuration message.
Using the System Configuration Program Displaying the Current STA for Ports or Modules The parameters shown in the following figure and table are for port or module STA Information (Port 1-12, Port 13-24, Expansion Slot 1 or Expansion Slot 2). Spanning Tree Information: Unit 1 Port 1-12 ============================ Port Type Status Designated Designated Designated Cost Bridge Port -----------------------------------------------------------1. 10/100TX 2. 10/100TX 3. 10/100TX 4. 10/100TX 5. 10/100TX 6.
AT-S29 Management Software User’s Guide Parameter Description Type Shows port type as: 10/100TX: 10Base-T / 100Base-TX 100FX: 100Base-FX 1000SX: 1000Base-SX 1000LX: 1000Base-LX Status Displays the current state of this port within the spanning tree: Disabled: Port has been disabled by the user or has failed diagnostics Blocked: Port receives STA configuration messages, but does not forward packets.
Using the System Configuration Program Using a Mirror Port for Analysis You can mirror traffic from any source port to a target port for real-time analysis. You cana then attach a logic analyzer or RMON probe to the target port and study the traffic crossing the source port in a completely unobtrusive manner. When mirroring port traffic, not that the target port must be included in the same VLAN as the source port.
AT-S29 Management Software User’s Guide Configuring Port Trunks Port trunks can be used to increase the bandwidth of a network connection or to ensure fault recovery. You can configure up to four trunk connections (combining 2 to 4 ports into a fat pipe) between any two AT-8324SX switches. However, before making any physical connections between devices, us the Trunk Configuration menu to specify the trunk on the devices at both ends.
Using the System Configuration Program You can use the Port Trunking Configuration screen to set up port trunks as shown below: Port Trunking Configuration =========================== Trunk ID Status Member List ------ 1 2 3 4 ---------------------------------------- --- --------- Unit : Port : - Unit : Port : - Unit : Port : - Unit : Port : - --- --------- Unit : Port : - Unit : Port : - Unit : Port : - Unit : Port : - --- --------- Unit : Port : - Unit : Port : - Unit : Port : - Uni
AT-S29 Management Software User’s Guide The RJ-45 ports used for each trunk must all be on the same internal switch chip. The port groups permitted include: ❑ Group 1: 1, 2, 3, 4 and 13, 14, 15, 16 ❑ Group 2: 5, 6, 7, 8 and 17, 18, 19, 20 ❑ Group 3: 9, 10, 11, 12 and 21, 22, 23, 24 The 100Base-FX fiber optic ports used for one side of a trunk must all be on the same module.
Using the System Configuration Program Configuring IGMP This protocol allows a host to inform its local switch/router that it wants to receive transmissions addressed to a specific multicast group. You can use the IGMP Configuration screen to configure multicast filtering shown below: IGMP Configuration ================== IGMP Status : ENABLED Act as IGMP Querier : DISABLED IGMP Query Count : 5 IGMP Report Delay (Minutes) : 5 Use or arrow keys to move.
AT-S29 Management Software User’s Guide Configuring Bridge MIB Extensions The Bridge MIB includes extensions for managed devices that support Traffic Classes, Multicast Filtering and Virtual LANs.
Using the System Configuration Program Parameter Description Bridge Settings Traffic Class1 Multiple traffic classes are supported by this switch as indicated under Bridge Capabilities. However, you can disable this function by setting this parameter to False. Note that this function is not available for the current firmware release. GMRP1 GARP Multicast Registration Protocol (GMRP) allows network devices to register endstations with multicast groups.
AT-S29 Management Software User’s Guide Port Priority Configuration The default priority for all ingress ports is zero. Therefore, any inbound frames that do not have priority tags will be placed in the low priority outlet queue. Default priority is only used to determine the output queue for the current port; no priority tag is actually added to the frame. You can use the 802.1P Port Priority Configuration menu to adjust default priority for any port as shown below: 802.
Using the System Configuration Program 802.1p Port Traffic Class Information This switch provides two priority levels with weighted fair queuing for port egress. This means that any frames with a default or user priority from 0-3 are sent to the low priority queue “0” while those from 4-7 are sent to the high priority queue “1” as shown in the following screen: 802.
AT-S29 Management Software User’s Guide 802.1Q VLAN Base Information The 802.1Q VLAN Base Information screen displays basic information on the VLAN type support by this switch. 802.1Q VLAN Base Information ============================= VLAN Version Number : 1 MAX VLAN ID : 2048 MAX Supported VLANs : 16 Current Number of 802.1Q VLANs Configured : 1 APPLY> Use or arrows keys to move, other keys to make changes.
Using the System Configuration Program 802.1Q VLAN Current Table Information ====================================== Deleted VLAN Entry Counts : 0 VID Creation time Status ------------------------------------------------------1 Unit 1. 2. 3. 4.
AT-S29 Management Software User’s Guide 802.1Q VLAN Static Table Information Use this screen to create a new VLAN or modify the settings for an existing VLAN. You can add/delete port members for a VLAN from any unit in the stack, or prevent a port from being automatically added to a VLAN via the GVRP protocol. (Also, note that all ports can only belong to one untagged VLAN. This is set to VLAN 1 by default, but can be changed via the 802. 1 Q VLAN Port Configuration screen.) 802.
Using the System Configuration Program Using the System Configuration Program For example, the following screen displays settings for VLAN 2, which includes tagged ports 1-6, and forbidden port 12. (Note that the dashed lines show that there are no switch units in this system other than Unit 1.) 802.1Q VLAN Static Table Information ====================================== VID VLAN Name Row Status -------------------------------------2 RD Active Unit Egress Ports 1. 2. 3. 4.
AT-S29 Management Software User’s Guide 802.1Q VLAN Port Configuration Use this screen to configure port-specific settings for IEEE 802.lQ VLAN features. 802.
Using the System Configuration Program Monitoring the Switch The Network Monitor Menu provides access to port statistics, RMON statistics, IP multicast addresses, and the static (unicast) address table. Each of the screens provided by these menus is described in the following sections. Network Monitor Menu ==================== Port Statistics ... RMON Statistics ... Unicast Address Table ... Multicast Address Registration Table ... IP Multicast Registration Table ...
AT-S29 Management Software User’s Guide Displaying Port Statistics Use the Port Statistics menu to display key statistics for each port. Overall statistics on the traffic passing through each port are displayed. This information can be used to identify potential problems with the switch (such as a faulty port or unusually heavy loading). Select the required stack unit, and port or module. The statistics displayed are indicated in the following figure and table.
Using the System Configuration Program Parameter Description Late Collisions The number of times that a collision is detected later than 512 bittimes into the transmission of a packet. Excessive Collisions1 The number of frames for which transmission failed due to excessive collisions. Internal Mac Transmit Errors1 The number of frames for which transmission failed due to an internal MAC sublayer transmit error.
AT-S29 Management Software User’s Guide Parameter Description Drop Events The total number of events in which packets were dropped by the probe due to lack of resources. Received Bytes Total number of bytes of data received on the network. This statistic can be used as a reasonable indication of Ethernet utilization. Received Frames The total number of frames (bad, broadcast and multicast) received.
Using the System Configuration Program Displaying the Unicast Address Table The Address Table contains the MAC addresses and VLAN identifier associated with each port (that is, the source port associated with the address and VLAN), sorted by MAC address or VLAN ID. You can search for a specific address, clear the entire address table, or information associated with a specific address, or set the aging time for deleting inactive entries.
AT-S29 Management Software User’s Guide Parameter Description Status Indicates address status as: D: dynamically learned, or P: fixed permanent.y by SNMP network management software. [Show] Displays the address table based on specified VLAN ID, and sorted by primary key MAC or VID. [Clear] Clears the specified MAC address. [Clear All] Clears all MAC addresses from the table.
Using the System Configuration Program Displaying the IP Multicast Registration Table Use the IP Multicast Registration Table to display all the multicast groups active on this switch, including multicast IP addresses and the corresponding VLAN ID. IP Multicast Registration Table ============================== VID Multicast IP Unit Dynamic Port Lists (Learned by IGMP Only) ---------------------------------------------------------------------------1 225.1.1.l 1. 2. 3. 4.
AT-S29 Management Software User’s Guide Configuring Static Unicast Addresses Use the Static Unicast Address Table Configuration screen to manually configure host MAC addresses in the unicast table. You can use this screen to associate a MAC address with a specific VLAN ID and switch port as shown below.
Using the System Configuration Program Parameter Description [Show] Displays the static address table sorted on VID as the primary key and MAC address as secondary key. [More] Scrolls through entries in the static address table.
AT-S29 Management Software User’s Guide Resetting the System Use the Restart command under the Main Menu to reset the management agent. The reset screen includes an option to return all configuration parameters to their factory defaults. System Restart Menu ==================== Restart Option : POST Reload Factory Defaults Keep IP Setting Keep User Authentication : : : : YES YES YES YES [Restart] Use or arrow keys to move. to select.
Using the System Configuration Program Logging Off the System Use the Exit command under the Main Menu to exit the configuration program and terminate communications with the switch for the current session.
Chapter 3 Web-based Management Web-based Configuration and Monitoring The Network Management Module provides an embedded HTTP Web agent in addition to the menu-driven system configuration program. This agent can be accessed by any computer on the network using a standard Web browser (Internet Explorer 4.0 or above, or Netscape Navigator 4.0 or above). Note If you experience a screen refresh problem with Internet Explorer 5.
Web-based Management Navigating the Web Browser Interface To access the Web-browser interface you must first enter a user name and password. The default user names are "admin" and "guest," with no password. The administrator has Read/Write access to all configuration parameters and statistics, and the guest has Read Only access to the management program. Home Page When your Web browser connects with the Network Management Module’s Web agent, the home page is displayed.
AT-S29 Management Software User’s Guide Configurable parameters have a dialog box or drop-down list. Once a configuration change has been made on a page, be sure to click on the “Apply” button at the bottom of the page to confirm the new setting. Alternatively, you can click on “Revert” to clear any changes prior to pressing “Apply.” Panel Display The Web Agent displays an image of the switch’s ports and expansion modules, showing port activity, speed, or duplex mode, depending on the specified mode.
Web-based Management 78 Menu Description Bridge Extension Displays/configures extended bridge capabilities provided by this switch, including support for traffic classes, GMRP multicast filtering, and VLAN extensions. Priority Configures default port priorities and queue assignments. VLAN Configures VLAN group members, automatic registration with GVRP, and other port-specific VLAN settings. IGMP Configures IGMP multicast filtering.
AT-S29 Management Software User’s Guide System Information Use the System Information screen to display descriptive information about the switch, or for quick system identification as shown in the following figure and table. System Name CentreCOM AT-8324SX IP Address 1.0.1.0.1 Object ID 1.3.6.1.4.207.1.4.
Web-based Management Switch Information Use the Switch Information screen to display hardware/firmware version numbers for the main board and agent modules, as well as the power status and modules plugged into the system. Main Board 00-30-84-9A-3B-80 Number of Ports 24 Hardware Version V3.0 Firmware Version V1.11 Internal Power Status Active Redundant Power Status Inactive Parameter Description Serial Number Serial number of the main board. Number of Ports Number of ports in this unit.
AT-S29 Management Software User’s Guide Expansion Slot Expansion Slot 1: 1-Port 1000Base-SX-SC Expansion Slot 2: 4GB Stack Module Parameter Description Expansion Slot 1 Shows module type if inserted (100Base-FX, 1000Base-SX, or 1000Base-LX). Expansion Slot 2 Shows module type if inserted (100Base-FX, 1000Base-SX, 1000Base-LX or Stack).
Web-based Management IP Configuration Use the IP Configuration screen to set the bootup option, configure the IP addresses for the agent module, or set the number or concurrent Telnet sessions allowed. The screen shown below is described in the following table. IP State: User-Configured IP Address: 10.1.0.1 Subnet Mask: 255.255.255.0 Gateway IP Address: 10.1.0.
AT-S29 Management Software User’s Guide Parameter Default Description MAC Address - Physical address of the Agent Module Number of Telnet Sessions 4 Sets the number of concurrent Telnet sessions allowed to access the Agent Module. SNMP Configuration Use the SNMP Configuration screen to display and modify parameters for the Simple Network Management Protocol (SNMP).
Web-based Management The default community strings are listed here. Trap Managers Purpose Community String Privileges General access public Read Only Network administrators private Read/Write Network management netman Read/Write The following figure and table describe how to specify management stations that will receive authentication failure messages or other trap messages from the switch. Up to 5 trap managers may be entered.
AT-S29 Management Software User’s Guide Security Configuration Use the Security Configuration screen to restrict management access based on specified user names and passwords. The Administrator has write access for parameters governing the SNMP agent. You should therefore assign a user name and password to the Administrator as soon as possible, and store it in a safe place.
Web-based Management Firmware Upgrade Options You can upgrade system firmware via a Web browser, a TFTP server, or a direct connection to the console port. Web Upload Management Use the Web Upload Management menu to load software updates into the switch. The upload file should be an AT-8324SX compressed binary file from Allied Telesyn; otherwise the agent will not accept it. The success of the upload operation depends on the quality of the network connection.
AT-S29 Management Software User’s Guide TFTP Download Management Use the TFTP Download Management menu to load software updates into the switch. The download file should be an AT-8324SX compressed binary file from Allied Telesyn; otherwise the agent will not accept it. The success of the download operation depends on the accessibility of the TFTP server and the quality of the network connection. After downloading the new software, the agent will automatically restart itself.
Web-based Management Address Table Configuration The Address Table contains the unicast MAC addresses and VLAN identifier associated with each port (that is, the source port associated with the address and VLAN). You can also clear the entire address table, or information associated with a specific port, address, or VLAN identifier; or set the aging time for deleting inactive entries. The information displayed in the Address Table is indicated in the following figure and table.
AT-S29 Management Software User’s Guide STA (Spanning Tree Algorithm) The Spanning Tree Algorithm can be used to detect and disable network loops, and to provide backup links between switches, bridges or routers. This allows the switch to interact with other bridging devices (that is, STA compliant switch, bridge or router) in your network to ensure that only one route exists between any two stations on the network. For a more detailed description of how to use this algorithm, refer to Chapter 4.
Web-based Management Parameter Description Forward Delay The maximum time (in seconds) the root device will wait before changing states (i.e., listening to learning to forwarding). Root The priority and MAC address of the device in the spanning tree that this switch has accepted as the root device. Root Port The number of the port on this switch that is closest to the root. This switch communicates with the root device through this port.
AT-S29 Management Software User’s Guide Parameter Description Port Status Displays the current state of this port within the spanning tree: ❑ Disabled: Port has been disabled by the user or has failed diagnostics. ❑ Blocked: Port receives STA configuration messages, but does not forward packets. ❑ Listening: Port will leave blocking state due to topology change, starts transmitting configuration messages, but does not yet forward packets.
Web-based Management Spanning Tree Configuration The following figures and tables describe Bridge STA configuration. Switch Usage: Disabled Priority: 32768 Parameter Default Description Usage Enabled Enable this parameter to participate in an STA compliant network. Priority 32,768 Device priority is used in selecting the root device, root port, and designated port. The device with the highest priority becomes the STA root device.
AT-S29 Management Software User’s Guide Parameter Default Description Hello Time 2 The time interval (in seconds) at which the root device transmits a configuration message. The minimum value is 1. The maximum value is the lower of 10 or [(Max. Message Age / 2) -1]. Max (Message) Age 20 The maximum time (in seconds) a device can wait without receiving a configuration message before attempting to reconfigure.
Web-based Management STA Port Configuration The following figure and table describe STA configuration for ports or modules. (Note that the Spanning Tree Configuration screen for the expansion slots also indicates module type.) Port Priority 94 Path Cost 1 128 19 2 128 19 3 128 19 4 128 19 5 128 19 Parameter Default Description Priority 128 Defines the priority for the use of a port in the STA algorithm.
AT-S29 Management Software User’s Guide Configuring Bridge MIB Extensions The Bridge MIB includes extensions for managed devices that support Traffic Classes, Multicast Filtering and Virtual LANs. To configure these extensions, use the Extended Bridge Configuration screen as shown below.
Web-based Management Bridge Settings Traffic Classes Enable GMRP Enable GVRP Enable Parameter Description Traffic Class1 Multiple traffic classes are supported by this switch as indicated under Bridge Capabilities. However, you can disable this function by setting this parameter to False. GMRP1 GARP Multicast Registration Protocol (GMRP) allows network devices to register endstations with multicast groups.
AT-S29 Management Software User’s Guide Priority IEEE 802.1p defines up to eight separate traffic classes. This switch supports Quality of Service (QoS) by using two priority queues, with weighted fair queuing for each port. You can use the Priority menu to configure the default priority for each port, or to display the mapping for the traffic classes as described in the following sections. Port Priority Configuration The default priority for all ingress ports is zero.
Web-based Management Port Traffic Class Information This switch provides two priority levels with weighted fair queuing for port egress.
AT-S29 Management Software User’s Guide Configuring Virtual LANs Use the VLAN Configuration menu to assign any port on the switch to any of up to 16 LAN groups. In conventional networks with routers, broadcast traffic is split up into separate domains. Switches do not inherently support broadcast domains. This can lead to broadcast storms in large networks that handle a lot of IPX traffic. By using IEEE 802.
Web-based Management VLAN Current Table This screen shows the current port members of each VLAN and whether or not the port supports VLAN tagging. Ports assigned to a large VLAN group that crosses several switches should use VLAN tagging. However, if you just want to create a small port-based VLAN for one or two switches, you can assign ports to the same untagged VLAN. The current configuration is shown in the following screen.
AT-S29 Management Software User’s Guide VLAN Static List Use this screen to create or remove VLAN groups. Current New (none) VLAN Static Table VLAN ID (1-2048) <
Web-based Management Use the screens shown below to assign ports to the specified VLAN groups as an IEEE802.1Q tagged port. Assign ports as tagged if they are connected to 802.1Q VLAN compliant devices. If the port is connected to VLAN-unaware devices, frames will be passed to the untagged VLAN group this port has been assigned to under VLAN Port Configuration.
AT-S29 Management Software User’s Guide VLAN Static Membership by Port Use the screen below to assign VLAN groups to the selected port. To perform detailed port configuration for a specific VLAN, use the VLAN Static Table. Port Number: 1 Member: Non-Member: (none) 2 RD <> Parameter Description Port Number Port number on the switch selected from the upper display panel. Add/Remove Add or remove selected VLAN groups for the port indicated in the Port Number field.
Web-based Management VLAN Port Configuration Port PVID (1-2048) Use this screen to configure port-specific settings for IEEE 802.
AT-S29 Management Software User’s Guide IGMP Multicast Filtering Multicasting is used to support real-time applications such as video conferencing or streaming audio. A multicast server does not have to establish a separate connection with each client. It merely broadcasts its services to the network, and any hosts which want to receive the multicast register with their local multicast switch/router.
Web-based Management IP Multicast Registration Table Use the IP Multicast Registration Table to display all the multicast groups active on this switch, including multicast IP addresses and the corresponding VLAN ID. VLAN ID: 1 Multicast IP Address: 224.0.1.22 Learned by: IGMP Multicast Group Port List: Unit 1, Port 7 106 Parameter Description VID VLAN ID assigned to this multicast group. Multicast IP IP address for specific multicast services.
AT-S29 Management Software User’s Guide Port Menus Port Information The Port Information screen displays the port status, link state, the communication speed and duplex mode, as well as the flow control in use. To change any of the port settings, use the Port Configuration menu. The parameters shown in the following figure and table are for the RJ-45 ports.
Web-based Management Port Configuration Use the Port Configuration menus to configure any port or module on the switch. Port Admin Status 1 4 ✓ Enable ✓ Enable ✓ Enable ✓ Enable 5 ✓ Enable 2 3 108 Duplex Mode Flow Control Auto-Negotiation Disable Auto-Negotiation Disable Auto-Negotiation Disable Auto-Negotiation Disable Auto-Negotiation Disable Parameter Default Description Admin Status Enable Allows you to disable a port due to abnormal behavior (e.g.
AT-S29 Management Software User’s Guide Expansion Port Information The Expansion Port Information screen displays the port status, link state, the communication speed and duplex mode, as well as the flow control in use. To change any of the port settings, use the Expansion Port Configuration menu. The parameters shown in the following figure and table are for expansion ports.
Web-based Management Expansion Port Configuration Use the Expansion Port Configuration menus to configure any port or module on the switch. Expansion Slot 1 - 1-Port 1000Base-SX-SC Port 1 110 Admin Status Duplex Status ✓ Enable Auto Flow Control Status Disable Parameter Default Description Admin Status Enable Allows you to disable a port due to abnormal behavior (e.g., excessive collisions), and then re-enable it after the problem has been resolved.
AT-S29 Management Software User’s Guide Using a Port Mirror for Analysis You can mirror traffic from any source port to a target port for real-time analysis. You cana then attach a logic analyzer or RMON probe to the target port and study the traffic crossing the source port in a completely unobtrusive manner. When mirroring port traffic, not that the target port must be included in the same VLAN as the source port.
Web-based Management Port Trunk Configuration Port trunks can be used to increase the bandwidth of a network connection or to ensure fault recovery. You can configure up to four trunk connections (combining 2 to 4 ports into a fat pipe) between any two AT-8324SX switches. However, before making any physical connections between devices, us the Trunk Configuration menu to specify the trunk on the devices at both ends.
AT-S29 Management Software User’s Guide You can use the Port Trunking Configuration screen to set up port trunks as shown below: Status List: Trunk 1 Status ✓ Enable Member List: Current: Trunk 1, Unit 1, Port 1 Trunk 1, Unit 1, Port 2 New: <
Web-based Management Port Statistics Use the Port Statistics menu to display Etherlike or RMON statistics for any port in the stack. Select the required stack unit, and port or module. The statistics displayed are indicated in the following figure and table. Etherlike Statistics Etherlike Statistics display key statistics from the Ethernet-like MIB for each port. Error statistics on the traffic passing through each port are displayed.
AT-S29 Management Software User’s Guide Parameter Description Excessive Collisions1 The number of frames for which transmission failed due to excessive collisions. Internal Mac Transmit Errors1 The number of frames for which transmission failed due to an internal MAC sublayer transmit error. Carrier Sense Errors1 The number of times that the carrier sense condition was lost or never asserted when attempting to transmit a frame.
Web-based Management Parameter Description Drop Events The total number of events in which packets were dropped due to lack of resources. Received Bytes Total number of bytes of data received on the network. This statistic can be used as a reasonable indication of Ethernet utilization. Received Frames The total number of frames (bad, broadcast and multicast) received. Broadcast Frames The total number of good frames received that were directed to the broadcast address.
AT-S29 Management Software User’s Guide Parameter Description 256-511 Byte Frames The total number of packets (including bad packets) received and transmitted that were between 256 and 511 octets in length inclusive (excluding framing bits but including FCS octets). 512-1023 Byte Frames The total number of packets (including bad packets) received and transmitted that were between 512 and 1023 octets in length inclusive (excluding framing bits but including FCS octets).
Chapter 4 Advanced Topics This AT-8324SX switch supports Layer 2 switching and other advanced features, which are described in this chapter. Spanning Tree Algorithm The Spanning Tree Algorithm (that is, the STA configuration algorithm as outlined in IEEE 802.1 D) can be used to detect and disable network loops, and to provide link backup.
Advanced Topics Once a stable network topology has been established, all bridges listen for Hello BPDUs (Bridge Protocol Data Units) transmitted from the Root Bridge. If a bridge does not get a Hello BPDU after a predefined interval (Maximum Age), the bridge assumes that the link to the Root Bridge is down. This bridge will then initiate negotiations with other bridges to reconfigure the network to re-establish a valid network topology.
Virtual LANs Switches do not inherently support broadcast domains, which can lead to broadcast storms in large networks that handle a lot of IPX traffic. In conventional networks with routers, broadcast traffic is split up into separate domains to confine broadcast traffic to the originating group and provide a much cleaner network environment. By supporting VLANS, this switch allows you to create segregated broadcast domains.
Advanced Topics Assigning Ports to VLANs Before enabling VLANs for the switch, you must first assign each port to the VLAN group(s) it will participate in. (By default all ports are assigned to VLAN 1 as untagged ports.) Add a port as a tagged port (that is, a port attached to a VLAN-aware device) if you want it to carry traffic for one or more VLANs and the device at the other end of the link also supports 802.1Q VLANS. Then assign the port at the other end of the link to the same VLAN(s).
Forwarding Tagged/ Untagged Frames Ports can be assigned to one untagged VLAN and multiple tagged VLANS. Each port on the switch is therefore capable of passing tagged or untagged frames. To forward a frame from a VLAN-aware device to a VLAN-unaware device, the switch first decides where to forward the frame, and then strips off the VLAN tag.
Advanced Topics Port Trunks You can configure up to three port trunks on this switch, or 12 trunks for the entire stack. Each trunk can combine up to four ports into an aggregate connection with up to 800 Mbps of bandwidth when operating at full duplex. Besides balancing the load across each port in the trunk, the additional ports provide redundancy by taking over the load if another port in the trunk should fail.
Class-of-Service (CoS) Support The AT-8126XS switch provides two transmit queues on each port, with a weighted round-robin scheme. This function can be used to provide independent priorities for various types of data such as real-time video or voice, and best-effort data. Priority assignment to a packet in the AT-8126XS switch is accomplished through explicit assignment by end stations which have applications that require a higher priority than best-effort. This switch utilizes the IEEE 802.lp and 802.
Advanced Topics IGMP Snooping and IP Multicast Filtering The Internet Group Management Protocol (IGMP) runs between hosts and their immediately neighboring multicast router/switch. The protocol’s mechanisms allow a host to inform its local router/switch that it wants to receive transmissions addressed to a specific multicast group. A router, or multicast-enabled switch, can periodically ask their hosts if they want to receive multicast traffic.
SNMP Management Software SNMP (Simple Network Management Protocol) is a communication protocol designed specifically for managing devices or other elements on a network. Network equipment commonly managed with SNMP includes hubs, switches, routers and host computers. SNMP is typically used to configure these devices for proper operation in a network environment, as well as monitor them to evaluate performance and detect potential problems.
Advanced Topics Remote Monitoring Remote Monitoring (RMON) provides a cost-effective way to monitor large networks by placing embedded or external probes on distributed network equipment (hubs, switches or routers). The provided network management software can access the probes embedded in recent Allied Telesyn network products to perform traffic analysis, troubleshoot network problems, evaluate historical trends, or implement proactive management policies.
Appendix A Troubleshooting If you have trouble making a connection to the agent module, then please refer to the following sections. Console Connection If you cannot access the on-board configuration program via a serial port, be sure to have set the terminal emulator program to VT100 compatible, 8 data bits, 1 stop bit, no parity and 9600 bps. Also check that the null-modem serial cable conforms to the pin-out connections provided in Appendix B.
Troubleshooting Upgrading Firmware via the Serial Port You can upgrade system firmware by connecting your computer to the serial port on the agent module, and using a console interface package that supports the XModem protocol. 1. Restart the system by using the Restart System command. 2. When the system initialization screen appears as shown below, press "D" to download system firmware, and then indicate the code type (1: Runtime, 2: POST 3: Mainboard). LOADER Version Vl.02 POST Version Vl.
The download file should be an AT-8324SX binary file from Allied Telesyn; otherwise the agent will not accept it. The file naming convention is: Runtime program: POST program: Mainboard program: AT-S29.BIN Boot-Vx.yx, and 8051 -Vx.yz 4. After the file has been downloaded, the console screen will display information similar to that shown below. Press "s" to start the management interface, change the baud rate back to 9600, and press Enter.
Appendix B Pin Assignments DB9 Serial Port Pin Description The DB-9 serial port on the panel of the Network Management Module is used to connect the switch to a management device. The on-board menu-driven configuration program can be accessed from a terminal, a PC running a terminal emulation program, or from a remote location via a modem connection. The pin assignments used to connect various device types to the switch’s management port are provided in the following tables.
Pin Assignments DB-9 Port Pin Assignments PC DB9 DTE Pin # Modem DB25 DCE Pin # EIA Circuit CCITT Signal Description Switch’s DB9 DTE Pin # CF 109 DCD (Data Carrier Detected) 1 1 8 BB 104 RxD (Received Data) 2 2 3 BA 103 TxD (Transmitted Data) 3 3 2 CD 108.
Connection from Switch’s Serial Port to 25-Pin DCE Port Connection from Switch’s Serial Port to 25-Pin DTE Port on PC Switch’s 9-Pin Serial Port Modem’s 25-pin DCE Port CCITT Signal 1 DCD 8 2 RXD 3 3 TXD 2 4 DTR 20 5 SGND 7 6 DSR 6 7 RTS 4 8 CTS 5 9 RI 22 Switch’s 9-Pin Serial Port Null Modem 1 DCD 1 1 8 DCD 2 RXD 2 3 3 TXD 3 TXD 3 2 2 RXD 4 DTR 4 8 20 DTR 5 SGND 5 20 7 SGND 6 DSR 6 7 6 DSR 7 RTS 7 4 4 RTS 8 CTS 9 20 5 6 5 CTS 9 RI PC’s 25-P
