OSPF Commands
XSR CLI Reference Guide 5-89
Thenoformofthiscommandremovesthevirtuallink:
no area area-id virtual-link router-id [authentication [message-digest | null]]
[hello-interval seconds] [retransmit-interval seconds] [transmit-delay seconds]
[dead-interval seconds] [authentication-key key | message-digest-key keyid md5
key]
Mode
Routerconfiguration:XSR(config-router)#
Defaults
•hellointervalseconds:10seconds
•retransmitintervalseconds:5seconds
•transmitdelayseconds:1second
•deadintervalseconds:40seconds
• authenticationkeykey:Nodefault
•messagedigestkeykeyidmd5key:Nodefault
Example
Thefollowingexample,asillustratedinFigure 51,showsthevirtuallinkconfigurationfortwo
ABRs.ABR1physicallyinterfacesarea2tothebackbone(area0.0.0.0).ABR2physicallyinterfaces
area3toarea2.AvirtuallinkiscreatedbetweenthetwoABRsbymeansofarea2,whichbecomes
thetransitarea.TheRouterIDforABR1is192.168.33.1.TheRouterIDforABR2is192.168.33.2.
OnABR1enterthefollowingcommands:
XSR(config)#interface fastethernet 1
XSR(config-if<F1>)#ip address 172.16.150.1 255.255.255.0
XSR(config)#interface serial 1/0
XSR(config-if<S1/0>)#ip address 192.16.33.1 255.255.255.0
XSR(config)#router ospf 1
XSR(config-router)#network 172.16.150.0 0.0.0.255 area 0.0.0.0
XSR(config-router)#network 192.16.33.0 0.0.0.255 area 2
XSR(config-router)#area 2 virtual-link 192.16.33.2
OnABR2enterthefollowingcommands:
XSR(config)#interface fastethernet 1
XSR(config-if<F1>)#ip address 172.15.0.1 255.255.0.0
XSR(config)#interface serial 1/1
XSR(config-if<S1/1)#ip address 192.16.33.2 255.255.255.0
XSR(config)#router ospf 1
XSR(config-router)#network 172.15.0.1 0.0.0.0 area 3
XSR(config-router)#network 192.16.33.0 0.0.0.255 area 2
XSR(config-router)#area 2 virtual-link 192.16.33.1