Cisco Routers (2600/11)

ip address 192.168.21.1 255.255.255.252! router ospf 1000. network 192.168.10.0 0.0.0.3 area 0. network 192.168.20.0 0.0.0.255 area 10. network 192.168.21.0 0.0.0.255 area 20. A group of routers can be defined as an area without a physical connection to the backbone area. In this case, a virtual link must be created from an Area Border Routers ... ................
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