Configuring OSPF and OSPFv3 1005
The following commands define a virtual link that traverses Area 1 to Switch
C (5.5.5.5).
To configure Switch B:
1
Configure the virtual link to Switch C for IPv4.
console#configure
console(config)#router ospf
console(config-router)#area 0.0.0.1 virtual-link 5.5.5.5
console(config-router)#exit
2
Configure the virtual link to Switch C for IPv6.
console#configure
console(config)#ipv6 router ospf
console(config-rtr)#area 0.0.0.1 virtual-link 5.5.5.5
console(config-rtr)#exit
Switch C is a ABR that enables a virtual link from the remote Area 2 in the AS
to Area 0. The following commands define a virtual link that traverses Area 1
to Switch B (2.2.2.2).
To configure Switch C:
1
For IPv4, assign the router ID, create the virtual link to Switch B, and
associate the VLAN routing interfaces with the appropriate areas.
console(config)#router ospf
console(config-router)#area 0.0.0.1 virtual-link 2.2.2.2
console(config-router)#exit
2
For IPv6, assign the router ID and create the virtual link to Switch B.
console(config)#ipv6 router ospf
console(config-rtr)#area 0.0.0.1 virtual-link 2.2.2.2
console(config-rtr)#exit
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