Dell Networking N4000 Series Configuration Manual page 1186

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
1186
Configuring OSPF and OSPFv3