3Com 10014299 Between Router B and Router C, To configure an Ospf virtual link Configure Router a

444CHAPTER 29: CONFIGURING OSPF

Configuring an OSPF Area 4 is not directly connected with area 0 in the following diagram. Area 1 Virtual Link serves as the transit area to connect area 4 and area 0. Configure a virtual link

between Router B and Router C.

Figure 149 Networking diagram of configuring OSPF virtual link

Router A 1.1.1.1

Area	0		E0 192.1.1.1/24
E0	192.1.1.2/24
		Router B	S0 193.1.1.2/24
		2.2.2.2
Area 1		Virtual		S0 193.1.1.1/24
		Link
			Router C	E0	152.1.1.1/24

3.3.3.3

To configure an OSPF virtual link:

1Configure Router A:

Area 2

[RouterA] interface ethernet 0 [RouterA-Ethernet0] ip address 192.1.1.1 255.255.255.0

[RouterA-Ethernet0] quit [RouterA] router id 1.1.1.1

[RouterA] ospf enable [RouterA-ospf] interface ethernet 0 [RouterA-Ethernet0] ospf enable area 0

2Configure Router B:

[RouterB] interface ethernet 0 [RouterB-Ethernet0] ip address 192.1.1.2 255.255.255.0

[RouterB-Ethernet0] interface serial 0 [RouterB-Serial0] ip address 193.1.1.2 255.255.255.0

[RouterB-Serial0] quit [RouterB] router id 2.2.2.2

[RouterB] ospf enable [RouterB-ospf] interface ethernet 0 [RouterB-Ethernet0] ospf enable area 0

[RouterB-Ethernet0] interface serial 0 [RouterB-Serial0] ospf enable area 1

[RouterB-Serial0] quit [RouterB] ospf

[RouterB-ospf]Vlink peer-id 3.3.3.3 transit-area 1

3Configure Router C:

[RouterC] interface ethernet 0 [RouterC-Ethernet0] ip address 152.1.1.1 255.255.255.0

[RouterC-Ethernet0] interface serial 0 [RouterC-Serial0] ip address 193.1.1.1 255.255.255.0

[RouterC-Serial0] quit