Allied-telesis AT-8550 Manual de usuario

Gigabit SwitchesAT-9108AT-8518AT-8525AT-8550◆User’s GuideVersion 4.x®PN 613-10793-00 Rev B

Audience DescriptionPreface-iiAudience DescriptionThis guide provides the required information to configure the software running on the Gigabit Ethern

STP Configurations6-6STP may block traffic between Switch 1 and Switch 3 by disabling the trunk ports for that connection on each switch.Switch 2 has

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide6-7Configuring STP on the SwitchSTP configuration involves the following actions:❑Create one or mo

Configuring STP on the Switch6-8The following parameters can be configured on each port:❑Path cost❑Port priorityNoteThe device supports the RFC 1493 B

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide6-9config stpd <stpd_name> maxage <value>Specifies the maximum age of a BPDU in this S

Displaying STP Settings6-10Displaying STP SettingsTo display STP settings, use the following command:show stpd {<stpd_name>}This command display

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide6-11Disabling and Resetting STPTo disable STP or return STP settings to their defaults, use the co

7-1Chapter 7Quality of Service (QoS)This chapter describes the concept of Quality of Service (QoS) and explains how to configure QoS on the switch.Ove

Building Blocks7-2Building BlocksThe service that a particular type of traffic receives is determined by assigning a QoS profile to a traffic grouping

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide7-3QoS ModeThere are two modes of QoS: ingress and egress. The default mode is ingress mode. Ingre

AT-9108, AT-8518, AT-8525, and AT-8550 User’s GuidePreface-iiiDocument ConventionsThis guide uses the following conventions:NoteA note provides additi

QoS Profiles7-4QoS ProfilesFour default QoS profiles are provided that cannot be deleted. The default QoS profile names are as follows:❑qp1❑qp2❑qp3❑qp

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide7-5Modifying a QoSProfileYou can modify the default profiles as desired. To modify the parameters

QoS Profiles and QoS Mode Details7-6QoS Profiles and QoS Mode DetailsAs indicated previously, changing the default QoS mode from ingress to egress is

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide7-7The Blackhole QoS ProfileIn the description of various options for configuring Policy-Based QoS

Traffic Groupings and Creating a QoS Policy7-8Traffic Groupings and Creating a QoS PolicyOnce a QoS profile is modified to the desired settings for ba

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide7-9IPQoS TrafficGroupingsYou can apply a set of destination IP addresses to an IPQoS traffic group

Traffic Groupings and Creating a QoS Policy7-10Table 7-3 describes the options for the long form syntax.Table 7-3 Config IPQoS Command OptionsCommand

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide7-11IPQoSImplementationRulesWhen using the config ipqos command, the following rules apply:❑The sh

Traffic Groupings and Creating a QoS Policy7-12IPQoSPrecedenceAs previously mentioned, there are two types of IPQoS command formats, a short form and

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide7-13IPQoS ExamplesThis section contains several examples of IPQoS, and illustrates some of the man

OrganizationPreface-ivOrganizationThis guide is divided into xx chapters and xx appendices, as follows:Section Title DescriptionChapter 1, OverviewA d

Traffic Groupings and Creating a QoS Policy7-14The following example illustrates basic precedence within IPQoS. It configures the following two IPQoS

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide7-15Verifying IPQoS settings. To verify settings made for IPQoS traffic groupings, use the command

Traffic Groupings and Creating a QoS Policy7-16Permanent MAC addresses. Permanent MAC addresses can be assigned a QoS profile whenever traffic is dest

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide7-17Verifying MAC-Based QoS Settings. To verify any of the MAC-based QoS settings, use either the

Traffic Groupings and Creating a QoS Policy7-18Physical andLogicalGroupingsTwo traffic groupings exist in this category:❑Source port❑VLANSource Port.

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide7-19Verifying Configuration and PerformanceThe following information is used to verify the QoS con

Verifying Configuration and Performance7-20QoS MonitorThe QOS monitor is a utility that monitors the hardware queues associated with any port(s). The

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide7-21Modifying a QoS PolicyIf you make a change to the parameters of a QoS profile after a QoS poli

Configuring QoS7-22Configuring QoSTable 7-6 describes the commands used to configure QoS.Table 7-6 QoS Configuration Commands Command Descriptionena

8-1Chapter 8IP Unicast RoutingThis chapter describes how to configure IP routing on the switch. It assumes that you are already familiar with IP unica

AT-9108, AT-8518, AT-8525, and AT-8550 User’s GuidePreface-vRelated PublicationsAllied Telesyn wants our customers to be well informed by providing th

Overview of IP Unicast Routing8-2Router InterfacesThe routing software and hardware routes IP traffic between router interfaces. A router interface is

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide8-3Populating theRouting TableThe switch maintains an IP routing table for both network routes and

Overview of IP Unicast Routing8-4A static route must be associated with a valid IP subnet. An IP subnet is associated with a single VLAN by its IP add

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide8-5Proxy ARPProxy Address Resolution Protocol (ARP) was first invented so that ARP-capable devices

Proxy ARP8-6Proxy ARPBetween SubnetsIn some networks, it is desirable to configure the IP host with a wider subnet than the actual subnet mask of the

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide8-7Relative Route PrioritiesTable 8-1 lists the relative priorities assigned to routes depending u

IP Multinetting8-8IP MultinettingIP multinetting is used in many legacy IP networks when there is a need to overlap multiple subnets into one physical

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide8-9IP MultinettingOperationTo use IP multinetting:1. Select a port on which IP multinetting is to

IP Multinetting8-1010. Enable IP multinetting, by using the following command:enable multinetting11. If you are using RIP, disable RIP on the dummy VL

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide8-11Configuring IP Unicast RoutingThis section describes the commands associated with configuring

Configuring IP Unicast Routing8-12Verifying the IPUnicast RoutingConfigurationUse the show iproute command to display the current configuration of IP

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide8-13Configuring DHCP/BootP RelayOnce IP unicast routing is configured, you can configure the switc

UDP-Forwarding8-14UDP-ForwardingUDP-forwarding is a flexible and generalized routing utility for handling the directed forwarding of broadcast UDP pac

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide8-15UPD-ForwardingExampleIn this example, the VLAN Marketing and the VLAN Operations are pointed t

UDP-Forwarding8-16UDP-ForwardingCommandsTable 8-2 describes the commands used to configure UDP-forwarding.Table 8-2 UDP-Forwarding CommandsCommand De

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide8-17IP CommandsTable 8-3 describes the commands used to configure basic IP settings.Table 8-3 Bas

IP Commands8-18config iparp add proxy <ipaddress> {<mask>} {<mac_address>} {always}Configures proxy ARP entries. Up to 64 proxy ARP

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide8-19Table 8-4 describes the commands used to configure the IP route table.Table 8-4 Route Table C

IP Commands8-20Table 8-5 describes the commands used to configure the ICMP protocol.Table 8-5 ICMP Configuration CommandsCommand Descriptionenable ic

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide8-21disable icmp unreachables {vlan <name>} Disables the generation of ICMP unreachable mess

1-1Chapter 1OverviewThis chapter describes the following:❑Gigabit Ethernet switch software features❑How to use the Gigabit Ethernet switch in your net

Routing Configuration Example8-22Routing Configuration ExampleFigure 8-2 illustrates a switch that has three VLANs defined as follows:❑Finance— Protoc

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide8-23The stations connected to the switch generate a combination of IP traffic and NetBIOS traffic.

Displaying Router Settings8-24Displaying Router SettingsTo display settings for various IP routing components, use the commands listed in Table 8-6.Ta

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide8-25Resetting and Disabling Router SettingsTo return router settings to their defaults and disable

9-1Chapter 9RIP and OSPFThis chapter describes the IP unicast routing protocols available on the switch. It assumes that you are already familiar with

Overview9-2RIP Versus OSPFThe distinction between RIP and OSPF lies in the fundamental differences between distance-vector protocols and link-state pr

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide9-3Overview of RIPRIP is an Interior Gateway Protocol (IGP) first used in computer routing in the

Overview of RIP9-4RouteAdvertisement ofVLANsVLANs that are configured with an IP address, but are configured to not route IP or are not configured to

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide9-5Overview of OSPFOSPF is a link-state protocol that distributes routing information between rout

Summary of Features1-2❑Distance Vector Multicast Routing Protocol (DVMRP)❑Protocol Independent Multicast-Dense Mode (PIM-DM)❑IPX, IPX/RIP, and IPX/SAP

Overview of OSPF9-6AreasOSPF allows parts of a networks to be grouped together into areas. The topology within an area is hidden from the rest of the

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide9-7Not-So-Stubby-Areas (NSSA). NSSAs are similar to the existing OSPF stub area configuration opti

Overview of OSPF9-8Figure 9-1 Virtual Link for Stub AreaVirtual links are also used to repair a discontiguous backbone area. For example, in Figure 9

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide9-9Route Redistribution Both RIP and OSPF can be enabled simultaneously on the switch. Route re-di

Route Redistribution9-10ConfiguringRouteRedistributionExporting routes from OSPF to RIP, and from RIP to OSPF, are discreet configuration functions. T

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide9-11Redistributing Routes into RIP. Enable or disable the exporting of static and OSPF-learned rou

Configuring RIP9-12Configuring RIPTable 9-2 describes the commands used to configure RIP.Table 9-2 RIP Configuration CommandsCommand Descriptionenabl

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide9-13config rip add vlan [<name> | all] Configures RIP on an IP interface. If no VLAN is spec

RIP Configuration Example9-14RIP Configuration ExampleFigure 9-4 illustrates a switch that has three VLANs defined as follows:❑Finance— Protocol-sensi

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide9-15The stations connected to ports 1 through 4 generate a combination of IP traffic and NetBIOS t

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide1-3Spanning TreeProtocol (STP)The switches support the IEEE 802.1D Spanning Tree Protocol (STP), w

Displaying RIP Settings9-16Displaying RIP SettingsTo display settings for RIP, use the commands listed in Table 9-3.Table 9-3 RIP Show CommandsComman

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide9-17Resetting and Disabling RIPTo return RIP settings to their defaults, or to disable RIP, use th

Configuring OSPF9-18Configuring OSPFEach switch that is configured to run OSPF must have a unique router ID. It is recommended that you manually set t

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide9-19config ospf [area <areaid> | vlan [<name> | all]] priority <number>Configure

Configuring OSPF9-20config ospf [vlan <name> | area <areaid> | virtual-link <routerid>] timer <retransmission_interval> <tr

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide9-21OSPF Configuration ExampleFigure 9-5 shows an example of an autonomous system using OSPF route

OSPF Configuration Example9-22Area 5 is connected to the backbone area by way of ABR1 and ABR2. It is located in Chicago and has the following charact

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide9-23enable ipforwardingconfig ospf area 0.0.0.6 stub nosummary stub-default-cost 10config ospf vla

Displaying OSPF Settings9-24Displaying OSPF SettingsTo display settings for OSPF, use the commands listed in Table 9-6.Table 9-6 OSPF Show CommandCom

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide9-25Resetting and Disabling OSPF SettingsTo return OSPF settings to their defaults, use the comman

Summary of Features1-4IP MulticastRoutingThe switches can use IP multicasting to allow a single IP host to transmit a packet to a group of IP hosts. T

10-1Chapter 10IP Multicast RoutingThis chapter describes the components of IP multicast routing, and how to configure IP multicast routing on the swit

Overview10-2OverviewIP multicast routing is a function that allows a single IP host to send a packet to a group of IP hosts. This group of hosts can i

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide10-3IGMP OverviewIGMP is a protocol used by an IP host to register its IP multicast group membersh

Configuring IP Multicasting Routing10-4Configuring IP Multicasting RoutingTo configure IP multicast routing:1. Configure the system for IP unicast rou

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide10-5Table 10-1 describes the commands used to configure IP multicast routing.Table 10-1 IP Multic

Configuring IP Multicasting Routing10-6config dvmrp timer <route_report_interval> <route_replacement_time>Configures the global DVMRP time

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide10-7Table 10-2 describes the commands used to configure the Internet Gateway Message Protocol (IGM

Configuration Example10-8Configuration ExampleFigure 1 0-1 is used in Chapter 9 to describe the OSPF configuration on a switch. Refer to Chapter 9 for

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide10-9Configuration forIR1The following is the configuration for the router labeled IR1:config vlan

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide1-5Memory RequirementsYour Gigabit switch must have 32MB of DRAM in order to support the features

Displaying IP Multicast Routing Settings10-10Displaying IP Multicast Routing SettingsTo display settings for IP multicast routing components, use the

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide10-11Deleting and Resetting IP Multicast SettingsTo return IP multicast routing settings to their

11-1Chapter 11IPX RoutingThis chapter describes how to configure IPX, IPX/RIP, and IPX/SAP on the switch. It assumes that you are already familiar wit

Overview of IPX11-2Figure 11-1 shows the same switch discussed earlier in Figure9-1 . In Figure 11-1, IPX routing has been added to the switch, and

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide11-3IPXEncapsulationTypesNovell NetWare™ supports four types of frame encapsulation. The ExtremeWa

IPX/RIP Routing11-4IPX/RIP RoutingThe switch supports the use of IPX/RIP for unicast routing. IPX/RIP is different from IP/RIP. However, many of the c

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide11-5Routing SAPAdvertisementsThe switch contains an IPX Service Table, and propagates SAP advertis

Configuring IPX11-6Configuring IPXThis section describes the commands associated with configuring IPX, IPX/RIP, and IPX/SAP on the switch. To configur

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide11-7❑show ipxsap — This command displays the enable status of IPX/SAP for the VLAN, and its operat

Copyright  1999 Allied Telesyn International, Corp. 960 Sewart Drive Suite B, Sunnyvale CA 94086 USAAll rights reserved. No part of this publication

Network Configuration Example1-6Network Configuration ExampleUsing Allied Telesyn’s Gigabit Ethernet switches, you can build a complete end-to-end LAN

IPX Commands11-8IPX CommandsTable 11-3 describes the commands used to configure basic IPX settings.Table 11-3 Basic IPX CommandsCommand Descriptionen

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide11-9config ipxservice add <service_type> <service_name> <netid> <mac_address&

IPX Commands11-10Table 11-4 describes the commands used to configure the IPX route table.Table 11-4 IPX/RIP Configuration CommandsCommand Description

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide11-11Table 11-5 describes the commands used to configure IPX/SAP.Table 11-5 IPX/SAP Configuration

IPX Configuration Example11-12IPX Configuration ExampleFigure 11-2 builds on the example showing the IP/RIP configuration that was used in Figure9-4.

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide11-13The stations connected to the system generate a combination of IP traffic and IPX traffic. Th

Displaying IPX Settings11-14Displaying IPX SettingsTo display settings for various IPX components, use the commands listed in Table 11-6.Table 11-6 I

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide11-15Resetting and Disabling IPXTo return IPX settings to their defaults and disable IPX functions

12-1Chapter 12Access PoliciesThis chapter describes access policies, and how they are created and implemented on the switch.Overview of Access Policie

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide1-7A high-speed core switch is used to aggregate Gigabit Ethernet links from several Allied Telesy

Using Access Policies12-2Using Access PoliciesTo use access policies:1. Create an access profile.2. Configure the access profile to be of type permit

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide12-3Access Policiesfor RIPIf the RIP protocol is being used, the switch can be configured to use a

Using Access Policies12-4Figure 12-1 RIP Access Policy ExampleAssuming the backbone VLAN interconnects all the routers in the company (and, therefore

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide12-5This configuration results in the switch having no route back to the VLAN Sales. Access Polici

Using Access Policies12-6Example. Figure 1 2-2 illustrates an OSPF network that is similar to the network used previously in the RIP example. In this

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide12-7Access Policiesfor DVMRPThe access policy capabilities for DVMRP are very similar to those for

Using Access Policies12-8In addition, suppose the administrator wants to preclude users on the VLAN Engsvrs from seeing any multicast streams that are

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide12-9Making Changes to an Access ProfileYou can make a change to an access profile, after the chang

Removing an Access Policy12-10Removing an Access PolicyTo remove an access policy, you must remove the access profile from the protocol or VLAN. All t

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide12-11Access Policy CommandsTable 12-1 shows the commands used to configure access policy.Table 12-

Software Factory Defaults1-8Software Factory DefaultsTable 1-1 shows factory defaults for global software features.Table 1-1 Gigabit Switches Global

Access Policy Commands12-12config dvmrp vlan [<name> | all] import-filter [<access_profile> | none]Configures DVMRP to filter certain rout

13-1Chapter 13Status Monitoring and StatisticsThis chapter describes how to view the current operating status of the switch, how to display informatio

Status Monitoring13-2Table 13-1 describes show commands that are used to monitor the status of the switch.Table 13-1 Status Monitoring CommandsComman

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide13-3Port StatisticsThe switch software provides a facility for viewing port statistic information.

Port Errors13-4Port ErrorsThe switch keeps track of errors for each port.To view port transmit errors:Use the following command:show ports <portlis

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide13-5To view port receive errors:Use the following command:show ports <portlist> rxerrorsThe

Port Monitoring Display Keys13-6Port Monitoring Display KeysTable 13-2 describes the keys used to control the displays that appear when you issue any

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide13-7LoggingThe switch log tracks all configuration and fault information pertaining to the device.

Logging13-8❑Message — The message contains the log information with text that is specific to the problem.Local LoggingThe switch maintains 1,000 messa

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide13-9If you enable the log display on a terminal connected to the console port, your settings will

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide1-9NoteFor default settings of individual software features, refer to individual chapters in this

Logging13-10LoggingCommandsThe commands described in Table 13-5 allow you to configure logging options, reset logging options, display the log, and cl

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide13-11RMONUsing the Remote Monitoring (RMON) capabilities of the switch allows network administrato

RMON13-12RMON Featuresof the SwitchThe IETF defines nine groups of Ethernet RMON statistics. The switch supports the following four of these groups:❑S

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide13-13Effective use of the Events group saves you time. Rather than having to watch real-time graph

14-1Chapter 14Software Upgrade and Boot OptionsThis chapter describes the procedure for upgrading the switch software image. This chapter also discuss

Downloading a New Image14-2hostname — Is the hostname of the TFTP server. (You must enable DNS to use this option.)filename — Is the filename of the n

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide14-3Saving Configuration ChangesThe configuration is the customized set of parameters that you hav

Using TFTP to Upload the Configuration14-4Using TFTP to Upload the ConfigurationYou can upload the current configuration to a TFTP server on your netw

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide14-5Using TFTP to Download the ConfigurationYou can download a previously saved configuration from

Upgrading and Accessing BootROM14-6Upgrading and Accessing BootROMThe BootROM of the switch initializes certain important switch variables during the

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide14-7To perform a serial download, you can optionally change the baud rate to 38.4K using the b com

Boot Option Commands14-8save {configuration} {primary | secondary}Saves the current configuration to nonvolatile storage. You can specify the primary

A-1Appendix ASupported StandardsThe following is a list of software standards supported by the Gigabit Ethernet switches from Allied Telesyn.For more

B-1Appendix BTroubleshootingIf you encounter problems when using the switch, this appendix may be helpful. If you have a problem not listed here or in

LEDsB-2Both sides if the Gigabit link must be enabled or disabled. It the two are different, typically the side with autonegotiation disabled will hav

AT-9108, AT-8518, AT-8525, and AT-8550 User’s GuideB-3Using the Command-Line InterfaceThe initial welcome prompt does not display:Check that your ter

Using the Command-Line InterfaceB-4The SNMP Network Manager or Telnet workstation can no longer access the device:Check that Telnet access or SNMP acc

AT-9108, AT-8518, AT-8525, and AT-8550 User’s GuideB-5PortConfigurationNo link light on 10/100 Base port:If patching from a hub or switch to another

2-1Chapter 2Accessing the SwitchThis chapter provides the following required information to begin managing the Gigabit switch:❑Understanding the comma

Using the Command-Line InterfaceB-6VLANsYou cannot add a port to a VLAN:If you attempt to add a port to a VLAN and get an error message similar to loc

AT-9108, AT-8518, AT-8525, and AT-8550 User’s GuideB-7802.1Q links do not work correctly:Remember that VLAN names are only locally significant throug

Debug TracingB-8Debug TracingThe switch software includes a debug-tracing facility for the switch. The show debug-tracing command can be applied to on

Index-1IndexAaccess levels 2-10access policiesaccess profileapplying 12-2changing 12-9configuring 12-2creating 12-2types 12-2configuration commands (t

IndexIndex-2configurationprimary and secondary 14-3saving changes 14-3uploading to file 14-4configuration example 1-6Ddefaultpasswords 2-11settings 1-

AT-9108, AT-8518, AT-8525 and AT-8550 User’s GuideIndex-3IP multicast routingconfiguration commands (table) 10-5configuring 10-4description 1-4, 10-2d

IndexIndex-4Kkeysline-editing 2-5port monitoring 13-6Lline-editing keys 2-5link-state database 9-5link-state protocol, description 9-2load sharingdesc

AT-9108, AT-8518, AT-8525 and AT-8550 User’s GuideIndex-5STP state, displaying 6-10STPD membership 6-2Switch commands (table) 3-4transmit errors 13-4p

IndexIndex-6Statistics group 13-12router interfaces 8-2, 11-1router types, OSPF 9-6Routing Information Protocol. See RIProuting table, populating 8-3r

AT-9108, AT-8518, AT-8525 and AT-8550 User’s GuideIndex-7triggered updates 9-3trunks 4-6UUDP-Forwardingand BootP 8-14and DHCP 8-14configuration comman

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide2-2Understanding the Command SyntaxThis section describes the steps to take when entering a command

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide2-3AbbreviatedSyntaxAbbreviated syntax is the shortest, most unambiguous, allowable abbreviation of

Understanding the Command Syntax2-4SymbolsYou may see a variety of symbols shown as part of the command syntax. These symbols explain how to enter the

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide2-5Line-Editing KeysTable 2-2 describes the line-editing keys available using the CLI.Table 2-2 Li

iiiTable of ContentsPreface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Command History2-6Command HistoryThe switch software “remembers” the last 49 commands you enter. You can display a list of these commands by using the

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide2-7Common CommandsTable 2-3 describes common commands used to manage the switch. Commands specific

Common Commands2-8config timezone <gmt_offset> {autodst | noautodst}Configures the time zone information to the configured offset from GMT time.

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide2-9unconfig switch {all} Resets all switch parameters (with the exception of defined user accounts,

Configuring Management Access2-10Configuring Management AccessThe switch software supports the following two level levels of management:❑User ❑Adminis

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide2-11Default AccountsBy default, the switch is configured with two accounts, as shown in Table 2-4.C

Configuring Management Access2-12NoteIf you forget your password while logged out of the command-line interface, contact your local technical support

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide2-13Methods of Managing the SwitchYou can manage the switch using the following methods:❑Access the

Using Telnet2-14Using TelnetAny workstation with a Telnet facility should be able to communicate with the switch over a TCP/IP network.Up to eight act

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide2-15You can enable BootP on a per-VLAN basis by using the following command:enable bootp vlan [<

Table of ContentsivUsing Telnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using Telnet2-16To configure the IP settings manually, perform the following steps:1. Connect a terminal or workstation running terminal-emulation sof

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide2-17NoteAs a general rule, when configuring any IP addresses for the switch, you can express a subn

Using Telnet2-18Disabling TelnetAccessBy default, Telnet services are enabled on the switch. You can choose to disable Telnet by enteringdisable telne

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide2-19IP Host Configuration CommandsTable 2-5 describes the commands that are used to configure IP se

Domain Name Service Client Services2-20Domain Name Service Client ServicesThe Domain Name Service (DNS) client in ExtremeWare augments the following c

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide2-21Using the Simple Network Time ProtocolThe switch software supports the client portion of the Si

Using the Simple Network Time Protocol2-22-5:00 -300 EST - Eastern Standard Bogota, Columbia; Lima, Peru; New York, NY, Trevor City, MI USA-6:00 -360

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide2-23The command syntax to configure GMT offset and usage of Daylight Savings is as follows:config t

Using the Simple Network Time Protocol2-24NTP queries are first sent to the primary server. If the primary server does not respond within 1 second, or

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide2-25SNTPConfigurationCommandsTable 2-8 describes SNTP configuration commands.SNTP ExampleIn this ex

AT-9108, AT-8518, AT-8525, and AT-8550 User’s GuidevChapter 5Forwarding Database (FDB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using SNMP2-26Using SNMPAny Network Manager running the Simple Network Management Protocol (SNMP) can manage the switch, provided the Management Infor

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide2-27❑Community strings — The community strings allow a simple method of authentication between the

Using SNMP2-28DisplayingSNMP SettingsTo display the SNMP settings configured on the switch, enter the following command:show managementThis command di

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide2-29Resetting andDisabling SNMPTo reset and disable SNMP settings, use the commands in Table 2-10.T

Checking Basic Connectivity2-30Checking Basic ConnectivityThe switch offers the following commands for checking basic connectivity:❑ping❑traceroutePin

3-1Chapter 3Configuring Switch PortsThis chapter describes how to configure ports on the switch. .Ports on the switch can be configured in the followi

Enabling and Disabling Ports3-2Enabling and Disabling PortsBy default, all ports are enabled. To enable or disable one or more ports, use the followin

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide3-3Configuring Port Speed and Duplex SettingBy default, the switch is configured to use autonegotia

Port Commands3-4Port CommandsTable 3-1 describes the switch port commands.Table 3-1 Port CommandsCommand Descriptionenable learning port <portlist

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide3-5disable port <portlist> Disables a port. Even when disabled, the link is available for dia

Table of ContentsviChapter 8IP Unicast Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Load Sharing on the Switch3-6Load Sharing on the SwitchLoad sharing with switches allows you to increase bandwidth and resilience between switches by

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide3-7Table 3-2, Table 3-3, Table 3-4 and Table 3-5 show the possible load-sharing port group combinat

Load Sharing on the Switch3-8To define a load-sharing group, you assign a group of ports to a single, logical port number. To enable or disable a load

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide3-9NoteDo not disable a port that is part of a load-sharing group. Disabling the port prevents it f

Port Mirroring3-10Port MirroringPort-mirroring configures the switch to copy all traffic associated with one or more ports to a monitor port on the sw

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide3-11Port MirroringCommandsPort mirroring commands are described in Table 3-6.Port MirroringExampleT

4-1Chapter 4Virtual LANs (VLANs)Setting up Virtual Local Area Networks (VLANs) on the switch eases many time-consuming tasks of network administration

Overview of Virtual LANs4-2❑VLANs provide extra security.Devices within each VLAN can only communicate with member devices in the same VLAN. If a devi

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide4-3Types of VLANsThe switch supports a maximum of 256 VLANs. VLANs can be created according to the

AT-9108, AT-8518, AT-8525, and AT-8550 User’s GuideviiChapter 10IP Multicast Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Types of VLANs4-4Even though they are physically connected to the same switch, for the members of the different VLANs to communicate, the traffic must

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide4-5To create multiple VLANs that span two switches in a port-based VLAN, a port on Switch 1 must b

Types of VLANs4-6Uses of Tagged VLANs. Tagging is most commonly used to create VLANs that span switches. The switch-to-switch connections are typicall

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide4-7Figure 4-4 Physical Diagram of Tagged and Untagged Traffic Figure 4-5 shows a logical diagram

Types of VLANs4-8As data passes out of the switch, the switch determines if the destination port requires the frames to be tagged or untagged. All tra

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide4-9In Figure 4-6, Switch A is a member of VLAN Red. VLAN Red has the VLANid 10. Port 1 and port 2

Types of VLANs4-10GVRP Commands. Table 4-1 describes GVRP commands.Protocol-BasedVLANsProtocol-based VLANs enable you to define a packet filter that t

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide4-11Figure 4-7 Protocol-Based VLANs Predefined Protocol Filters. The following protocol filters a

Types of VLANs4-12To define a protocol filter, do the following:1. Create a protocol using the following command:create protocol <protocol_name>

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide4-13NoteFor more information on SNAP for Ethernet protocol types, see TR 11802-5:1997 (ISO/IEC) [A

Table of ContentsviiiRMON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VLAN Names4-14VLAN NamesThe switch supports up to 256 different VLANs. Each VLAN is given a name that can be up to 32 characters. VLAN names can use s

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide4-15Configuring VLANs on the SwitchThis section describes the commands associated with setting up

Configuring VLANs on the Switch4-16config protocol <protocol_name> [add | delete] <protocol_type> <hex_value> {<protocol_type>

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide4-17VLANConfigurationExamplesThe following example creates a tag-based VLAN named video. It assign

Displaying VLAN Settings4-18Displaying VLAN SettingsTo display VLAN settings, use the following command:show vlan {<name> | all}The show command

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide4-19Deleting VLANsTo delete a VLAN, or to return VLAN settings to their defaults, use the commands

5-1Chapter 5Forwarding Database (FDB)This chapter describes the contents of the forwarding database (FDB), how the FDB works, and how to configure the

Overview of the FDB5-2❑Non-aging entries — If the aging time is set to zero, all aging entries in the database are defined as static, non-aging entrie

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide5-3Associating a QoSProfile with anFDB EntryYou can associate a QoS profile with a MAC address (an

Preface-iPrefaceThis guide describes the use and configuration of the following Allied Telesyn Gigabit Ethernet switches running software version 4.x.

Configuring FDB Entries5-4Configuring FDB EntriesTo configure entries in the FDB, use the commands listed in Table 5-1.Table 5-1 FDB Configuration Co

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide5-5FDBConfigurationExamplesThe following example adds a permanent entry to the FDB:create fdbentry

Displaying FDB Entries5-6Displaying FDB EntriesTo display FDB entries, use the commandshow fdb {<mac_address> | vlan <name> | <portlist

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide5-7Removing FDB EntriesYou can remove one or more specific entries from the FDB, or you can clear

6-1Chapter 6Spanning Tree Protocol (STP)Using the Spanning Tree Protocol (STP) functionality of the switch makes your network more fault tolerant. The

Spanning Tree Protocol Domains6-2Spanning Tree Protocol DomainsThe switch can be partitioned into multiple virtual bridges. Each virtual bridge can ru

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide6-3STPD Status forGVRP-AddedPortsIf a port is added to a VLAN by GVRP, the newly added port reflec

STP Configurations6-4STP ConfigurationsWhen you assign VLANs to an STPD, pay careful attention to the STP configuration and its effect on the forwardi

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide6-5When the switches in this configuration start up, STP configures each STPD such that there are