3com 2500 User Guide

C

HAPTER

 13: A

DMINISTERING

 OSPF R

OUTING

Virtual links establish connections from your local area to other 
autonomous systems in the network. You can define, remove, modify, 
and display the virtual links on your system.

The virtual links display shows the virtual links associated with the 
interface you specify.

To display virtual links, from the top level of the Administration Console, 
enter:

This example shows virtual links:

Table 13-10 shows the attributes for the virtual links display.

Use this command to create a new virtual link to a destination router. You 
must configure a virtual link for each area border router that has an 
interface outside the backbone area.

system
ethernet
fddi
atm
bridge

➧

ip
ipx
appletalk
snmp
analyzer
script
logout

interface
route
arp
multicast
udphelper
routing
icmpRouterDiscovery

➧

ospf
rip
ping
statistics

areas
defaultRouteMetric
interface
linkStateData
neighbors
routerID
partition
stubDefaultMetric

➧

virtualLinks
statistics

➧

display
define
modify
remove

Virtual links

  Indx  Interface        Router ID        Rxmit  Router           Link      Link
        Address                           Intvl  Address          State     Cost
  1     193.202.111.1    0.0.0.8          50     193.202.111.194  PTP       2

Table 13-10   Field Attributes for Virtual Links Display

Indx

Index of the local interface that the virtual link is connected to

Interface Address Local interface address

Router ID

Router ID of the remote router’s OSPF 

Rxmit Intvl

LSA retransmit interval for the virtual link

Router Address

Interface address of remote router (changes dynamically)

Link State

Virtual link state

Link Cost

Cost of virtual link (computed dynamically)