Internet Protocol IP | 3Com 3500 manual

16

INTERNET PROTOCOL (IP)

To route packets using the Internet Protocol (IP), you:

■Establish an IP routing interface

■Decide which IP options and routing protocols you want to use

■Enable IP routing

An IP routing interface defines the relationship between an IP virtual LAN (VLAN) and the subnetworks in the IP network. Each routing IP VLAN interface is associated with one VLAN that supports IP. The system has one interface defined for each subnet that is directly connected to it.

You can also choose between two different routing models when you establish an IP routing interface:

■VLAN-based routing

Because bridging is faster in normal circumstances, the system first tries to determine if it can bridge the frame before routing it.

■Router port-based routing

The system first tries to route packets that belong to recognized protocols, and then bridges all other packets. If the network or a portion of the network is devoted to routing IP frames, this model makes network traffic more efficient.

This chapter provides guidelines and other key information about how to configure IP in your system. This chapter addresses the commands in the ip menu except for multicast and ospf, which other chapters in this Command Reference Guide explain.

For information about IP multicast, see Chapter 18. For information about Open Shortest Path First (OSPF) routing using IP, see Chapter 19.

For more information about IP routing, see the Implementation Guide for your system.

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3Com 3500 manual Internet Protocol IP

Contents

Command Reference Guide 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents System serialPort serialPortMode System console security accessSystem console timeout timeOut System serialPort terminalSpeed Module baseline display System nvData resetSystem sntp display System sntp remove Management ip advancedPing Management ip rip statistics Part IV Physical Port Parameters Ethernet paceAccess Bridge cos summary Part V Bridging Parameters Virtual Lans Vlans Ip interface icmpRouterDiscovery Bridge packetFilter unassign Ip arp display Ip multicast cache Ip vrrp statisticsIp multicast dvmrp tunnels summary Ip multicast igmp interface summary Ip ospf virtualLinks statistics Ip ospf linkStateData summary Ipx rip policy summary Ipx server static Appletalk sourceSocket Ipx statistics summaryIpx statistics sap Appletalk interface summary Qos classifier detail Qos rsvp enableQos classifier summary Analyzer display 3Com Knowledgebase Web ServicesPage Platform Release CoreBuilder SuperStack II SwitchPlatforms Covered in This Document Information about troubleshooting and networking tasks, see About command syntax, field descriptions, default values,Help you to understand the commands Material about why or when to use a particular command. For Finding Specific Information in This Guide Short description of the purpose of the command Command description begins at the top of a page. a commandFull command name Platforms on which this command is valid Icon Description Recommendations For Entering CommandsThroughout this guide Convention Description Document title Include the following information when commentingDocumentation more useful to you Please send e-mail comments about this guide to About this Guide Administration Overview Command Summary Page Accessing the Administration Console Administration Console OverviewCoreBuilder 9000 Management Features Configuration Tasks Use the Administration Console to manage the CoreBuilder Management Controller EMC functions, such as login tableManagement features Administration Console See the Web Management User Guide for the CoreBuilder PSU Chassis Management Architecture Provides a cost-efficient Intelligent Power Management Manages power useEME Overview Type Command Top-Level Menus Tasks Levels Password Access System displays a prompt similar to the following All modules use subslot Administer Access Example Read Access Example Write Access Example Layer 2 switching module is installed Structure diagrams at the beginning of most chapters showYour system supports the command Menu options are not case sensitive Entering a Command String Entering Values in Command Strings Entering Abbreviated CommandsTo accept the default or current value, press Enter Enter q Part II System-Level Functions System Environment Gives an overview of all the commands in this bookCommand Summary Command Summary Module display Module redundancy reset NonRedundant module nameScript logout Ch 4 Module Environment Management summary management detail management ip Ethernet summary Ethernet detail Ethernet autoNegotiation Ch 6 SnmpPart IV Physical Port Parameters Ch 7 Ethernet Ports Fddi mac path fddi port display Ch 8 FddiFddi station display Bridge multicast igmp summary Part V Bridging Parameters Ch 9 Bridge-wide ParametersBridge display Ch 10 Bridge Ports Ch 13 Resilient Links Ch 11 TrunksCh 12 MultiPoint Link Aggregation Ch 15 Packet Filters Ch 14 Virtual LANs VLANs Part VI Routing Protocols Ch 16 IP Command Summary Ch 17 Vrrp Ip rip password Ip rip addAdvertisement Ip multicast traceRoute Ch 18 IP Multicast Ip ospf areas display Ch 19 Ospf Command Summary Ipx server secondary Ch 20 IPX Ipx secondary Ipx forwarding ipx rip mode ipx rip triggeredIpx sap triggered Ch 21 AppleTalk Part VII Traffic Policy Ch 22 Quality of Service and Rsvp Ch 24 Roving Analysis Log display Log devices Log servicesPart Viii Monitoring Ch 23 Event Log Command Summary System Environment Module Environment Page System Environment System Environment Fields in the System Display System displayValid Minimum Abbreviation Important Consideration File transfer File transfer protocol for Prompt Description Possible Values DefaultSystem fileTransfer Options Installation Are located Enter Web URL where the Web Help Sy co w Options System console consoleAccess System console ctlKeys Logging on to the system Access levelPassword Important Considerations Most terminal screens are 24 lines high Trusted IP address IP address of the trusted IP client Mask Displays a summary of trusted IP client informationFields in the System Console Security Display Not a trusted client System console security define Specified IP IP address IP address of the interfaceChosen from the range All Client ? for a list of selectable indexes Trusted IPClient index To remove System console security access Network Current deny message System console timeout timeOut Telnet Timeout interval Minutes Interval System snapshot summary System snapshot detail 3900 9300 Tftp Procedure FTP Procedure 3500 Only Host IP Loads a new revision of system software Sy b d System baseline set Resets the baseline counters to zero RequestedState Valid Minimum Abbreviation System baseline Enables or disables a baseline Terminal Procedure Local Connection Enter the terminal speed setting for the terminal port Procedure IP Interface System serialPort modemSpeed New value Sets the baud rate of your system serial port System serialPort baudRate Procedures Procedure Sy se e System name If you enter n, you are returned to the Time menu Mean TimeDst If you enter y to the prompt, a sub-menu appears that User specified option for start and end dates Format Description System time datetime Sets the system’s date and time Time zone Index That you want to configureSystem time timezone 14 GMT+100 CET/FWT/MET/MEWT/SWT System Time Timezone Example Enter a daylight saving time option System time dst Sets daylight savings timeFormat for option 5 is ccyy-mm-ssThhmmss Important Considerations Tftp System nvData save Previous IP Important Consideration FTP and TftpOptionally, enter a label for the file Example System nvData save Continue? You may not want to rebootSystem reboots after each Reset If you enter y, the system displays the following messages For example Sy nv e So the system reboots after System nvData resetDo you wish Confirmation of the reset Continue? To reboot because resetting System clearDiagBlock System diagErrLog Fields in the System Sntp Display Field Description Configuration InformationSystem sntp display Displays Simple Network Time Protocol Sntp information Valid IP address Address Sntp database Except System sntp defineServer’s IP System sntp modify System sntp remove System sntp state Sntp state Whether you want to Disabled 3600 Request poll Seconds, the poll interval Local system time System sntp toleranceTime Time threshold value, Seconds 900 Tolerance Reboot Confirmation that you want to System? Yes System rebootReboots the system Valid Minimum Abbreviation Important Considerations Example Script Press Escape to return to the top level before you log out Module Environment Module Environment Port Gigabit Switching Fabric This module 3C numberModule display Fields in the Module Display Detail display images You use the snapshot featureModule snapshot Summary Module snapshot detail Displays when the current baseline was last set Module baseline set Enables or disables a baseline Module redundancy Possible Prompt Description Values Default Mo nam Module Time Example Most terminal screens are 24 lines Do you wish Confirmation prompt Module nvData resetNecessary after each reset Prompts Performs an emergency download Displays emergency download information for your module Module nvData staging 3500 9000 9400 Module diagErrLog Reboots the specified module Module reboot You from a Telnet session Enterprise Management Engine EME module Establishing Management III Access Page OUT-OF-BAND Management OUT-OF-BAND Management Fields in the Management Summary Display Values are ignored That sets the port mode on Ethernet ports that have portMode options. If autonegotiation is enabled, port mode ReqPortMode Fields in the Management Detail Display Management detail MacAddress MAC address of this port MultiCollisions Default is enabledPort was disabled LateCollisions Port during the most recent sampling period. Sampling Periods are 1 second long not configurableRxUnicasts To a higher-level protocol or application Fields in the Management IP Interface Summary Display Interface, chosen from Range of addresses that IP address IP address of the out-of-band Command Removes an IP management interface if you no longer need it Management ip route display Value Description Fields in the Management IP Route DisplayStatus for Routes Defines a static route Destination IP Deletes an existing route Ip ro fl Adds a default route to the routing table immediately Deletes the default route IP address or IP address that is Searches for a route in the routing table Fields in the Management IP ARP Display Management IP ARP Static Example Defines a static ARP cache entry on the systemYou can define up to 128 static ARP entries Management ip arp remove Deletes all entries from the ARP cache Ip ar flushD Fields in the Management IP RIP Display Index Index number of the interface RIP-1 modeDefault, advertise, and enabled RIP-2 mode Which you want to set the RIP RIP modeLearn Current Value Advertise Enabled IP interfaces Management IP RIP Mode Example Fields in the Management IP RIP Statistics Display Displays general RIP statistics Management ip ping To interrupt the command, press Enter Management IP Ping Example Management ip advancedPing Period . upon receiving an Icmp Enabled, the system displaysDisabled, the system displays Disabled disabled Enabled Time between Management IP Advanced Ping Example Ip t Ip traceRoute Management IP Trace Route Example Wait Wait interval in seconds that Management IP Advanced Trace Route Example TTL value Fields in the Management IP Statistics Display Fields in the Management Icmp Statistics Display Fields in the Management UDP Statistics Display OutTimeStamps OutAddrMasksSent Number of Icmp time stamp reply packets that were sent Snmp Simple Network Management Protocol Snmp Fields in the Snmp Display Snmp display Snmp Community Example Snmp communitySets two Snmp community strings read-only and read-write Fields in the Snmp Trap Display Snmp trap display Snmp trap addModify Snmp Trap addModify Example Snmp trap remove Removes all Snmp trap reporting destinations Snmp trap flush Fddi station statistics Snmp trapSmtProxyTraps TransmitAndReceive Setting Allows or disallows Snmp write requests Snmp writeDisable Ethernet Ports Fiber Distributed Data Interface Fddi Page This chapter shows whether your system supports the command Configure Ethernet ports in your system Ethernet summary Fields in the Ethernet Summary Display 3500 To display summary information about Ethernet ports, enterVendorName Ethernet detail AlignmentErrs Fields in the Ethernet Detail DisplayControl value Partitioned appears when the port has been disabled by 3900 Bytes Layer 2, 9300 9400 PaceAccessConfig-error.The value on-lineappears when the port Is both enabled and connected to a cable. The value This port to a higher-level protocol or application Error during receptionRxInternalErrs Station was last initialized Frames not transmitted successfully Error during transmissionFrom this port by a higher-level protocol or application Autonegotiation Want to enable or disableDisable Ethernet portMode Selected Earlier in this 100half Section 100BASE-FX Off RxOn TxOn Setting Each of the ports that you SelectedEthernet flowControl Available on Flow Control SettingsSetting Description Port Type That you selected Ethernet paceAccess Ethernet paceInteractiveAccess Ethernet label Ethernet portState Valid Minimum Abbreviation Important Consideration Ethernet monitoring mode Fiber Distributed Data Interface Fddi Fields in the Fddi Station Display Fddi station display Bit to Set for Rejecting a Station Connection Management CFM. In a single MAC node Port B has precedence with defaults forConnecting to a Port M With defaults for connecting to a Port M Fddi station tNotify All Enabled Fields in the Fddi Path Display Fddi path displayDisplays Fddi path information Fddi path tvxLowerBound Fddi path tmaxLowerBound Microseconds Ring’s operational token Rotation time, TOpr Fddi path maxTreq Fields in the Fddi MAC Summary Display Fddi mac summary Fields in the Fddi MAC Detail Display Fddi mac detail Higher-level protocol or application Or application. Does not include frames that were notReceived into receive buffers, such as missed frames TvxValue Enabled or the Fddi ring was not operationalThis MAC can support Has expired Modules All Fddi mac notCopiedThreshold Fddi mac llcService Sets the path assignment for MACs Fddi mac path LctFailCount Error estimateFddi port display Fields in the Fddi Port Display Fddi port lerAlarm Fddi port lerCutoff Identification Fddi port label Fddi port path To a specific port Fields in the Fddi Station Mode DisplayFddi port numbers change, depending on StationMode Changes to take effect You want the stationMode Fiber Distributed Data Interface Fddi Bridge-Wide Parameters Bridge Port Parameters Bridging ParametersPage BRIDGE-WIDE Parameters Valid Minimum Abbreviation Fields in the Bridge Display Bridge display Seconds. To configure the bridge maximum age, see Configuration messages when the bridge is the rootAssigned to it by the root bridge. The default value is To discard the stored configuration message when it is Field StpState Whether the Spanning Tree Protocol is enabled orLater in this chapter. STP is also configured on a By the root bridge. Compare with the bridgeMaxAge Bridged to Ethernet Enabled enabled Disabled Ethernet and Fddi links Versa from Fddi to Ethernet OptionsIpx SnapTranslation Snap Translation when Bridge addressThreshold Dynamically learned To disable 300 10 1,000,000 secondsBridge agingTime Aging time Maximum period Removed StpState Disabled Default, or Current value EnabledDisabled Default, or Current value Bridge spanningTree stpPriority Bridge spanningTree stpMaxAge Bridge spanningTree stpHelloTime Bridge spanningTree stpForwardDelay Bridge spanningTree stpGroupAddress Gvrp state Enable Disabled For the entire bridgeBridge gvrpState Bridge cos enable Fields in the Bridge CoS Summary Display Bridge cos summary Bridge cos modify Address Messages if it is elected as the Igmp querier Fields in the Bridge Multicast Igmp Summary DisplayFunction to operate Igmp query source IP Bridge multicast igmp snoopMode Bridge multicast igmp queryMode Bridge multicast igmp queryIpAddress 3500 9000 Fields in the Bridge Multicast Igmp Groups Display For which you are Valid Vlan ID 1 Default Vlan VID Multicast routers ID number of the VlanPorts that lead to IP Bridge multicast igmp qPort Bridge Port Parameters Fields in the Bridge Port Summary Display Bridge port summary Disabled Management has disabled the port or Port number depending on your system configurationFor example, when you define a trunk, only the anchor Disabled for the bridge Configuration for all ports Enabled, the port STP configuration options areEnabled STP sets the operating state of the port Topology characteristics. This is the default Fields in the Bridge Port Detail Display Bridge port detail StpCost in this chapter To configure port priority values, see bridge portDesignated port when more than one bridge port is RxErrorDiscs RxNoDestDiscs Option, see bridge port multicastLimit in this chapterRxMcastLimitType Port multicastLimit in this chapter Meaningless as long as its link state is up, the port If bridge-wide STP is disabled, this port STP setting isForwards all frames. To configure STP on a port, see Learning Similar to listening, but the bridge TxMcastFilters TxFrames Number of frames that this port transmitted to itsFor a protocol that the local bridging function is Processing includes bridge management frames Broadcasts only McastBcast Multicasts BcastOnly Specified ports Enabled Enabled factory DisabledBridge port stpState STP state Bridge port stpCost Po stpp Bridge port gvrpState Valid bridge Port numbers All ? to display a Port summary Vlan Bridge port address add MAC address that you want to Valid MAC Address Remove Removes individual MAC addresses from the address table Bridge port address find Bridge port address flushAll Bridge port address flushDynamic Trunks Trunks Fields in the Bridge Trunk autoMap Summary Display Bridge trunk autoMap enable/disable Bridge trunk autoMap test You can select all or one trunk Fields in the Bridge Trunk Detail Display Bridge trunk detail Whether Tcmp is enabled or disabled for the trunk Bridge trunk define 1000BASE-SX ? for a list of selectable Media types Than one FastEthernet GigabitEthernet 10/100BASE-TX Part of the trunk Ports that you want to be Following functions Trunk configurationFlow Trunk Control Message Example shows a define operation that creates two trunks Bridge Trunk Define Example Changes a trunk in either of two ways Bridge trunk modify Bridge trunk modify Ports Deactivation of trunk Enabled Disabled Factory Default, or Current Fast Ethernet, Gigabit Ethernet, or Fddi Bridge Trunk Modify Example Bridge trunk remove Bridge Trunk Remove Example Trunks Mpla Describes the state of the multipoint aggregated link Peer Switch InterfaceState Port on the other peer switch in the Mpla core Bridge mpla summary Fields in the Bridge Mpla Detail Display Bridge mpla detail Switch, for added bandwidth SwitchUse only CoreBuilder 9400 systems as Mpla core switches Use only Switch 3900 devices as edge switches Bridge mpla mode Input format for this MAC address is 9000 Resilient Links Pair Fields in the Bridge Link Summary Display Fields in the Bridge Link Detail Display Bridge link detail Bridge link define Bridge link define Index Link that you want to modify LinkState Bridge link linkStateResilient link Valid Minimum Abbreviation Options Bridge link activePort Bridge link modify Defined resilient link Character string that has Embedded spaces Main port Bridge Link Remove Example Removing a link requires that you reboot the systemBridge link remove Virtual Lans Vlans Valid Minimum Abbreviations Bridge vlan summary You specify Fields in the Bridge Vlan Summary DisplayIndex System-assigned index number that identifies a Vlan System in allClosed mode Static The Vlan was created statically user-configuredBy using the bridge vlan define command Interface using the ip interface define command with Bridge vlan detail Statistics appear for the Vlan that you specify Field Description Ignore STP modeVLAN. The default Vlan always uses the name Fields in the Bridge Vlan Detail Display Interface define command with the interface User-configured by using the bridge vlanDefine command Create a router port IP interface using the ip Compatibility mode for VLANs configured prior to AllClosed modeNor can you change the VID of the default VLAN. Default Vlan requires a VID Bridge vlan define 3500/9000 Layer Virtual Lans Vlans Vlan exists If the defaultUsed by management Operations Vines DECnet 802.1Q Up to 32 Ascii Characters or Spaces Yes LayerNone Bridge Vlan Define Example 9000 Layer IP Vlan Bridge Vlan Define Example 3500 9000 9400 3900 9300 Configure the per-port tagging Bridge Vlan Define Example 9000 Layer Bridge vlan modify 3500/9000 Layer Selectable Vlan If you have That identifies a Vlan Index Vlan interface index Unspecified CommandsProtocol suite Apple for AppleTalk Bridge Vlan Modify Example 9000 Layer Bridge Vlan Modify Example Bridge vlan modify 3900/9300/9400/ 9000 Layer Up to 32 Ascii Current Characters or Name Spaces Are available to Be assigned to Vlan AllYes Tag type Vlan name Bridge Vlan Modify Example 9000 Layer Interface Is associated with the Vlan Index Continue Bridge vlan removeDeletes a Vlan definition Bridge Vlan Remove Example Select a Vlan mode as follows Bridge vlan mode Bridge vlan stpMode Bridge Vlan STP Mode Example Bridge vlan vlanAwareMode Bridge Vlan Aware Mode Example Virtual Lans Vlans Packet Filters Packet Filters Bridge Packet Filter List Example Lists the currently defined packet filters Sample Bridge Packet Filter Display Displays the contents of the specified packet filter This example shows the user creating the portGroup filter Bridge Packet Filter Create Port Group Example Creates a custom packet filter using the built-in editor Create Custom Bridge Packet Filter Example Bridge Packet Filter Delete Examples Deletes the selected packet filter Modifies an existing packet filter using the built-in editor Store as New Filter Example Replace Existing Filter Example Syntax of the EME download command is Name last Bridge Packet Filter Load ExamplePrompt Description Current IP CB9000 connect User next connects to the module and loads the filter Bridge packetFilter assign TxM Bridge Packet Filter Assign ExamplesSelect paths Identifier Path to which you TxA Unassigns selected packet filter from one or more ports Unassignment is from the transmit all txA paths on port Bridge Packet Filter Unassign Examples Bridge Packet Filter Port Group List Example Select port Displays a port groupSample Bridge Packet Filter Port Group Display 3500 9000 Bridge Packet Filter Port Group Create Example Bridge Packet Filter Port Group Delete Example PortGroup delete Deletes a selected port group Bridge Packet Filter Port Group Add Port Examples Adds ports to an existing port group Displaying port group 2 shows that port 6 is removed Removes ports from a port groupBridge Packet Filter Port Group Remove Port Examples AppleTalk IP MulticastPage Internet Protocol IP Internet Protocol IP 397 Ip interface summary Fields in the IP Interface Summary Display Fields in the IP Interface Detail Display Host portion of the address is enabled orDisabled for the specified interface. a directed Ip interface detail To a 0 is in the host part of the IP address Preference Whether there is a preference being used forPreference level As the network number, the subnetwork number, IP Interface Detail Example Defines an IP interface Index for IP address IP address of the interface, chosenFrom the range of addresses that Range Addresses that IP Interface Define Example VLAN-based Routing IP Interface Define Example Port-based Routing IP Interface Define Example Defines an IP interface3900/9300/9400 Layer Vlan index Value Ip interface modify Removes an IP interface from the system’s routing table Ip interface remove Ip interface arpProxy IP Interface ARP Proxy Example More than one interface IP interfaces Index number Interfaces to which you IP Interface Directed Broadcast Example Ip interface icmpRedirect Icmp redirect Whether you want to State Disabled Current ValueFrame Not applicable if you have Icmp router discovery can be set on a per-interface basis Holdtime Advertisements are held valid Hex Bit signed 231to Twos-complement integer that1800 IP Interface Icmp Router Discovery Example Fields in the IP Interface Statistics Display Ip interface statisticsDisplays IP interface statistics on a per-interface basis Or both Than Options 3500 only Ip route display Fields in the IP Route Display 3500 9000 9400 3900 9300 Ip route r Deletes all learned routes from the routing table Ip route flush Ip route default Ip route n Ip route findRoute Fields in the IP ARP Display Ip arp display IP ARP Static Example Ip arp remove Ip arp flushAll Ip arp flushDynamic Ip ar a Fields in the IP ARP Statistics Display Resolution Protocol ARP event occursIp arp statistics System supports baselining for ARP statistics ARP reply ResolutionWas down ARP request Fields in the IP DNS Display Ip dns display Or current name Changes the name of a currently defined domainCharacters long Valid domain name Index number to modify or remove this IP address Like the following Address that you Ip dns modifyModifies a currently defined name server IP address Name server IP Selectable server Index number ? for a list Indexes Deletes a previously defined name server IP addressWant to remove Ip dns nslookup Fields in the IP udpHelper Display Ip udpHelper display Ip udpHelper define Deletion Ip udpHelper remove Ip udpHelper hopCountLimit By default, there is no threshold Ip udpHelper interface first Ip udpHelper interface even Interfaces sequentially Ip udpHelperInterface sequential By default, IP routing is disabled on the system Ip rip display 9000 only 9000 only By default, enabled RIP-1 ModeState as off. Other modes are learn default Fields in the IP RIP Display Ip rip mode Advertise Current Only Value Enabled 3500 only IP RIP Mode ExampleNot Handles RIP 2 packets Updates Disabled Learn Factory IP interfaces Index number of the interfaces Compatibility modeCompatibility Compatibility mode that Mode Handles RIP-2 updates On a per-interface basis, sets the RIP cost Selected interface Enables or disables RIP Poison Reverse mode on the systemEnabled Value Ip rip poisonReverse Collapse route table entries for all subnets of a directly Sent during a RIP Version 2 updateMode On the selected interface All Disabled Enabled Current value IP RIP Password Example Ip rip password Adds an advertisement address to an IP RIP interface Valid IP address Address List of advertisement addresses Ip rip remove Advertisement Fields in the IP RIP Policy Summary Display Ip rip policy summaryDisplays summary information about RIP routing policies Route policies are classified as follows All interfaces Ip rip policy detailDisplays detailed information about RIP routing policies Fields in the IP RIP Policy Detail Display Defines an import or export route policy for RIP Ip rip policy define + add Subtract 0.0 All Source Route Router Address/mask Action Description RIP Import Policy Conditions for Specified Interfaces Source Protocol Router Action Description RIP Export Policy Conditions for Specified InterfacesExample of Import Policy Example of Export Policy Export Only All Ip rip policy modifyModifies an existing route policy for RIP Protocols Static route for export policies Values associated with the route Deletes a previously defined route policy Ip rip policy remove Fields in the IP RIP Statistics Display Ip ping IP Ping Example Ip advancedPing Receiving an Icmp echo replay Enabled DisabledEnabled Seconds Yes Selectable Interface index Router System displays a period . upon IP Advanced Ping Example Ip traceRoute IP Trace Route Example 4096 Bytes Yes From which the probe packetsDefined on the system Their indexes Numeric mode Whether the system shows hopDisabled Enabled IP Advanced Trace Route Example TTL value Fields in the IP Statistics Display Valid Minimum Abbreviation ip sta Options OutDatagrams Number of UDP packets that the router sent Fields in the UDP Statistics DisplayFields in the Icmp Statistics Display Number of Icmp time stamp reply packets Vrrp Fields in the IP Vrrp Summary Display Ip vrrp summary Sample IP Vrrp Summary Display Fields in the IP Vrrp Detail Display Master, Backup, or Initialize state Vlan consider the Master down if two advertisement Auth Whether the Vrrp router uses simple passwordIpTtlErrors Total number of Vrrp advertisements with IP TTL To the Master state That this virtual router has sent. The priority of zero Stopped participating in VRRP. Used to trigger backupType Type of virtual router primary or backup VersionErrors PriorityZeroTx Sample IP Vrrp Detail Display IpTtlErrors Defines a virtual router on the system Ip vrrp define Define the virtual Backup Index number of an IP Virtual LAN Vlan that Priority master IP Vrrp Define Example Modifies an existing virtual router Ip vrrp modify Router Indexes Backup Auto-learn Vrid Vidx IP Vrrp Modify Example IP Vrrp Remove Example Ip vrrp remove Identifies the virtual router Enables or disables a configured virtual routerIP Vrrp Mode Example Virtual router identifier Fields in the IP Vrrp Neighbor Display Master or Backup routerIp vrrp neighbor Displays a list of neighboring virtual routers Number that this virtual router has received VriderrorsDisplays general Vrrp statistics for the virtual router Fields in the IP Vrrp Statistics Display Virtual Router Redundancy Vrrp IP Multicast IP Multicast Fields in the IP Multicast Dvmrp Interface Summary Display Non-leaf The interface is a branch in the IP Multicast Routing ProtocolFields in the IP Multicast Dvmrp Interface Detail Display Non-querier The interface is not functioning as Ip multicast dvmrp interface mode Routing interface for Modify the default Ip multicast dvmrp tunnels summary Fields in the IP Multicast Dvmrp Tunnels Summary Display Ip multicast dvmrp tunnels define Valid IP interface on a different system and subnetwork Interface Index number Interface on which youRemote Address Multicast tunnel end Point. Use standard Deletes a Dvmrp tunnel end point from the system Ip multicast dvmrp tunnels address TTL threshold Valid Minimum ConfigurationPrompt Definition Possible Values Default Modifies the metric or cost of an existing Dvmrp tunnel Fields in the IP Multicast Dvmrp Route Display Fields in the IP Multicast Dvmrp Cache Display After the index number indicates that a prune When there are no outgoing interfaces and whenListed on the left Routing interface index number. a T precedes a tunnel Function is activated and these values represent the cost As the Igmp querier, this field shows Self Summarizes key information about Igmp interfacesFields in the IP Multicast Igmp Interface Summary Display Fields in the IP Multicast Igmp Interface Detail Display Interface detailPort information Ip multicast igmp interface TTL Packets and set Disabled Or current valueYour selection applies to all interfaces in the system React to Igmp Candidate for Query modeCan offer itself as a Ip multicast cache Fields in the IP Multicast Cache Display Multicast group address Ospf Open Shortest Path First Ospf Fields in the IP Ospf Areas Display Ip ospf areas displayDisplays a list of existing Ospf areas Area ID must be unique for the autonomous system Backbone area 0.0.0.0 is configured by defaultYes Factory Default, or Current value Description Possible Values Default 3500 9000 9400 3900 9300 Whether to advertise area Yes Range Variable, based on You want to add to the areaOn address Range class Variable, based on Current value Mask You want to modify IP Ospf Areas Modify Range Example Ip ospf areas removeRange It entails more hops or less bandwidth Default routerBy default, the default route metric is not defined Field in the IP Ospf Default Route Metric Display Route metric With the default route Defines the default route metric for the router 3500 9000 9400 3900 9300 Fields in the IP Ospf Interface Summary Display Ospf information is displayed IP interface of the backup designated router BDRFields in the IP Ospf Interface Detail Display AreaID Ospf area to which the interface belongs Attached network This router is not the designated router or backupBDR Router is the backup designated router on Designated router Fields in the IP Ospf Interface Statistics Display Becoming a neighbor with these other routers On the interface are configured with a different deadMismatchDead Interval than this router. This prevents the router from When processing an LSR packet, if the area is not When an Ospf Hello packet is received and the packetWhen an Ospf Hello packet is received that has the same When an Ospf database descriptor packet is received When an Ospf Hello, LSU, or LSAck is being sent as a Network whose configuration has not changed couldWhen an Ospf database descriptor packet is transmitted Problems Enables or disables Ospf on specified IP interfaces One or more All factory Assigns interface priority to the Ospf router Associates an interface with an Ospf area Assigns a cost to an Ospf interface Transmit Delay in seconds that you Sets the Ospf interface transmit delay Sets the interface Hello interval Ip ospf interface hello Ip ospf interface retransmit Transmitting router is inactive Ip ospf interface deadSpecifies the dead interval for an interface They determine that All ? for a list Selectable Indexes Up to eight Sets password security for an Ospf interfaceAscii characters Default, or Ip ospf linkStateData databaseSummary Lsid Fields in the IP Ospf Link State Data Router Display Metric Cost of the link Router ID Originating router ID Stub Net Network IP address maskID number of the router that originated the LSA Fields in the IP Ospf Link State Data Network Display For type 3 summary LSAs For which you want to viewSummary LSA information Link State ID Metric Cost to reach the network Network mask For Fields in the IP Ospf Link State Data Summary DisplayType 3 Destination network’s IP address Type 4 ASBR’s Ospf router ID IP network number Fields in the IP Ospf Link State Data External Display Established Data received from neighbor will attempt to contactInit Have recently seen Hello packet from neighbor Two-way Bidirectional communication has been Adds a neighbor static IP address to an existing interface Ip ospf neighbors add 3500 9000 9400 3900 9300 Sets the Ospf router ID IP Ospf Router ID Example Address Type IP Ospf Router ID Example Interface Type Specific maximum partition size at the next reboot Partition at the next rebootMeans that Ospf has been set to use the default memory Maximum size of the IP routing table at the next reboot There are three choices for memory allocation Modifies the maximum memory that Ospf can allocate Field in the IP Ospf Stub Default Metric Display By default, the stub default metric is not defined Ip ospf stubDefaultMetric define Ip ospf stubDefaultMetric remove Fields in the IP Ospf Virtual Links Summary Display Update packet over the virtual link Fields in the IP Ospf Virtual Links Detail Display Displays detailed information about a virtual link Fields in the IP Ospf Virtual Links Neighbor Display Is not supported in the current implementation Ospf routers are being discarded due to authenticationFields in the IP Ospf Virtual Links Statistics Display Down and reestablished When an Ospf Hello packet is received and the packet ReceiveLSU Creates a new virtual link to a destination router Description Possible Values Default To reach the target router 3500 9000 9400 3900 9300 Sets the virtual link transmit delay, in seconds Sets the virtual link Hello interval, in seconds Ip ospf virtualLinks retransmit Sets the virtual link dead interval, in seconds Password Sets password security for a virtual link Fields in the IP Ospf Policy Summary Display Fields in the IP Ospf Policy Detail Display Type 1 as default. Only applicable to export policiesIp ospf policy detail Field Description Defines import and export Ospf routing policies Ip ospf policy define Sta static Rip Policy type Type of policy OriginProtocols From which protocol the route Originated Import Export Direct Route Address/mask Action Description Ospf Import Policy Conditions Protocol Interface Action Description Ospf Export Policy ConditionsExport Policy Conditions for Direct Routes Example of Export Policy for a Directly Connected Interface Modifies an existing Ospf routing policy Ip ospf policy modify Policy action Accept or reject the route Valid IP PolicySta static rip Value Type Value AS external advertisementASE, defined as Without options Value Type Routers Specified routers IP Ospf Policy Modify Example Deletes Ospf routing policies Ip ospf policy remove Fields in the IP Ospf Statistics Display Ip ospf statisticsDisplays general Ospf statistics Open Shortest Path First Ospf IPX Display define modify remove SAPadvertising RIPadvertising For this option, the menu identifies the available IPX interface. When the system prompts youIpx interface display Fields in the IPX Interface Display Defines an IPX interface Ipx interface define IPX Interface Define Example Ipx interface modify Changes the characteristics of an existing IPX interface 802.2 Format 802.2 LLC RAW802.3 Available with 802.2, SNAP,802.3/SNAP EthernetII Ipx i r Controls whether the system advertises IPX services Controls whether the system advertises IPX routes 0x0 0xffffffff Range You want to display routes Ipx route displayStart Zeroes 00-00-00-00-00-00 means that Fields in the IPX Route DisplayTime the router sent a packet Packets to the segment. a node address of all Fields in the IPX Secondary Route Display Ipx route secondaryDisplays any secondary routes that are available Node address in the format Ipx route static IPX Static Route Example IPX network Byte IPX network address 0x1 0xfffffffe Address Ipx route removeDeletes a route from the IPX routing table Ipx route flush Ipx server display Server. The maximum number is Service typeFields in the IPX Server Display Time a server in the table sent a packet Interface index Interface index number for Defines a static IPX server IPX Static Server Example ? for a list of selectable names 0x1 0xffff Service name Service name of the server Service typeDeletes a server from the IPX server table Ipx server flush Fields in the IPX Secondary Server Display Ipx server secondaryDisplays any secondary servers that are available Controls whether the system forwards or discards IPX packets Ipx forwarding Passive The system processes all incoming RIP packets Triggered RIP updatesRIP allows the exchange of routing information on a NetWare Ipx rip triggered 3500 9000 9400 3900 9300 Define a RIP Routing Information Protocol policy Ipx rip policy define IPX RIP Policy Define Example Static All Ipx rip policy modifyModify an existing RIP Routing Information Protocol policy Subtract\ Multiply Divide Adjust the metric value, ThisIPX RIP Policy Modify Example If only one policy Ipx rip policy removeRemove an existing RIP Routing Information Protocol policy Ipx sap mode Ipx sa t All routes Or Export apply the policy to advertised servicesFields in an IPX SAP Policy Summary Display Name Object name that assigned to the server Type Fields in an IPX SAP Policy Detail Display Parameter is valid only if Policy Type is set to Export All Define a SAP Service Advertising Protocol policyIpx sap policy define 0x0098 Enter up to 6 hex characters Match the same service. a IPX SAP Policy Define Example Ipx sap policy modify Modify a SAP Service Advertising Protocol policy 00-00-00-00-00-00 IPX SAP Policy Modify Example Remove an existing SAP Service Advertising Protocol policy Ipx output-delay Applications that were dropped Displays IPX summary statisticsFields in the IPX Statistics Summary Display Fields in the IPX RIP Statistics Display Ipx statistics ripDisplays IPX RIP Routing Information Protocol statistics Been processed Displays IPX SAP Service Advertising Protocol statisticsIpx statistics sap Fields in the IPX SAP Statistics Display Fields in the IPX Forwarding Statistics Display Displays IPX forwarding statistics IPX route is unknown No Routes Fields in the IPX Interface Statistics Display Ipx statistics interfaceDisplays IPX interface statistics Field Description Ipx oddLengthPadding Valid Minimum Abbreviation ipx n Options IPX NetBIOS Example IPX Secondary Example Ipx secondary IPX Appletalk Appletalk With the AppleTalk interface Displays summary information for all AppleTalk interfacesFields in the AppleTalk Interface Summary Display Fields in the AppleTalk Interface Detail Display Displays detailed information for all AppleTalk interfaces Interface. Seed interfaces only Defines an AppleTalk interface Zone name AppleTalk zone that is Zone name. Seed interfaces Only Interface n Modifies an existing AppleTalk interface New AppleTalk interface Vlan interface index, itThat you can associate with a Removes an existing AppleTalk interface Fields in the AppleTalk Interface Statistics Display Aged out of the table NbpInLookupReqsRtmpOutDataPkts RtmpRouteDeletes Fields in the AppleTalk Route Display Appletalk route flush Fields in the AppleTalk Aarp Display Appletalk aarp remove 9300Important Consideration Appletalk zone display network Displays the AppleTalk Zone table indexed by zones Appletalk forwarding Verification checksum from the incoming data and compares AppleTalk protocol uses checksums to detect errors in dataAppletalk checksum Appletalk sourceSocket To test for network connectivity Address Appletalk pingDestination AppleTalk node that you want Fields in the AppleTalk DDP Statistics Display Fields in the AppleTalk Rtmp Statistics Display Fields in the AppleTalk ZIP Statistics Display Displays AppleTalk Zone Information Protocol ZIP statistics Fields in the AppleTalk NBP Statistics Display Any errorDisplays AppleTalk Name Binding Protocol NBP statistics VII Quality of Service QoS and RsvpPage Rsvp Quality of Service QOS and Rsvp Fields in the QoS Classifier Summary Display Are predefined Qos classifier detailFields in the QoS Classifier Detail Display Protocol UDP port range Flow classifiers only Classifier Installed Classifier can have only one control applied to it Qos classifier defineDefines a flow or nonflow classifier Classifier Up to 0.0 Factory DefaultClassifier Number of the flow Flow or nonflow Custom Custom protocol Nonflow Type Classifiers only Source IP For flow classifiers Up to four portions 0.0End value Ethertype Protocol type Classifiers with Custom Hex values for Protocol Flow Classifier Procedure Quality of Service QOS and Rsvp QoS Classifier Define Example Flow Classifier QoS Classifier Define Example Nonflow Classifier Nonflow Classifier Procedure Modifies a previously defined classifier Qos classifier modify 255.255.255.255 Factory Match, or Procedure Flow Classifier Quality of Service QOS and Rsvp QoS Classifier Modify Example Flow Classifier QoS Classifier Remove Example Removes a previously defined classifier Fields in the QoS Control Summary Display Displays summary information about QoS controls Destined is over its threshold Fields in the QoS Control Detail DisplayLimit Rate limit in KBytes/sec or percentage Loss eligible Packet can be dropped if the transmit queue for which it is Type Rate limit type, none no rate limit, receivePort, or So forth Defines a control for one or more existing classifiers Qos control define Control name Name that you assign to Default/Best Effort forService level Service level for ReceivePort Default Aggregate For rate limit Is expressed Enabled backplane portsControl Used so that drop packets Enabled How rate limit Specific Weekdays Starting time hhmm Ending time hhmm Weekends Input Time Type OptionsInput Time Type Options You can apply aggregate rate limits only to flow classifiers Quality of Service QOS and Rsvp QoS Control Define Example Enter the classifiers that are subject to this control Limit without affecting the other defined rate limits Qos control modifySelect That are associated with Service level Service level for Conforming packetsService level for excess Specified for For a control You want to enableFor flow or nonflow None ? for a list of selectable values TCP drop Procedure Quality of Service QOS and Rsvp ReceivePort QoS Control Modify Example QoS Control Remove Example 9000 Layer Removes a previously defined control Fields in the QoS Ldap Display Qos ldap display Qos ldap enable Disabled Removes the connection to Ldap server Qos ldap disable Total resv Qos rsvp summaryFields in the QoS Rsvp Summary Display Performed policing for that flow. Options are edge, always Fields in the QoS Rsvp Detail Display Displays detailed Rsvp information when Rsvp is enabledQos rsvp detail Maximum total Qos rsvp enableEnables Rsvp on the system Rsvp settings that you specify Always Default Never Qos rsvp enable Disables Rsvp on the system Qos bandwidth display Link When you enter the command, the system prompts you to enterSent only when no high priority packets need to be sent With a special Ieee 802.1p tag value Qos excessTaggingDisplay Ieee 802.1p Tag value to use to tag or retag Excess packets Qos excessTagging enable Qos excessTagging disable Interval Interval, in seconds, during Seconds Factory Default, orSets a sampling interval for gathering QoS statistics Zero value shows byte or packet counters One or more Port numbers All Displays QoS receive statisticsFields in the QoS Receive Statistics Display Bridge ports Port numbers whose receive Peak count The highest number of conforming nonflow Displays QoS transmit statistics Fields in the QoS Transmit Statistics Display Field Description Quality of Service QOS and Rsvp Roving Analysis ViiiPage Event LOG Event LOG Severity Levels Log display Displays the current log settingsSupported Event Log Services Fields in the Log Display ? for a list of valid severity levels Yes Log Devices ExamplesLevels for To disable the config and info severity levels Or disabled Services/levels To enable all severity levels for the AppleTalk service Log Services Examples Event LOG Roving Analysis Roving Analysis Analyzer Display Example Analyzer displayFields in the Analyzer Display 3500 Analyzer Add Example 9000 1000BASE-SX module Analyzer Remove Example Analyzer remove Starts port monitoring activity on the selected bridge port Analyzer start Analyzer Start Example 9000 1000BASE-SX module Analyzer Stop Example Analyzer stopStops port monitoring activity on the selected bridge port Roving Analysis Appendix a Technical Support Page 3Com Services Country Data Rate Telephone Number Access by Analog ModemUsername anonymous Hours a day, 7 days a week 408 727 Access by Digital Modem847 262 NET 3Com 800 638 Europe, South Africa, and Middle East 800 638 Not toll-free Country Telephone Number Fax Number Appendix a Technical Support ? character 473 SymbolsNumbers Commands 150 system menu Protocol Dynamic versus static Vlan origin 345 Errors Routing interface203 Pace Access 218 Port duplex mode 212 Port flow control 215 Fddi MAC Fax service 3ComFacts SAP policy Define 642 Detail 264 LER Link Error Rate Alarm value 242 LerCutoffSwitch Log, event 747 Logout 638 Removing 159 management ip rip Packet size advancedPing 475 advancedTraceRoute IPX 116 to 712 SMT Station Management LerAlarm valueDisplaying configurations 715 418 IPX forwarding 570 QoS Quality of Service interval for101, 135 System reboot 123 Icmp Internet Control Message Protocol 483 639 Zones 677 URL User configuration information Sample definition 311 Setting Ignore STP modeAccess 71 348 Updates RIP triggered 631