2

Configuring OSPF over Unnumbered Interface

The following graphic represents an example configuration for running OSPF over an unnumbered interface.

 

 

 

 

Area 2

 

 

 

 

 

Area 1

 

 

Nokia

 

 

 

Nokia

Platform A

Unnumbered Serial Link

Platform B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Backbone

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

00043

 

 

 

 

 

 

 

 

1.Configure the interfaces on Nokia Platform A and Nokia Platform B as in “To configure an unnumbered interface.”

2.For each Nokia Platform, configure an OSPF area as in “Configuring OSPF.”

3.In the Interfaces section, click on the Area drop-down window next to the configured unnumbered interface and select Backbone.

4.Click Apply.

5.Click Save to make your change permanent.

Note

Because the unnumbered interface uses the IP address of the selected proxy interfaces whenever you change this proxy interface, OSPF adjacencies are re-established.

Note

Whenever you change the underlying encapsulation of the unnumbered serial interfaces, for example from Cisco HDLC to PPP or from PPP to Frame Relay, OSPF adjacencies are re-established.

OSPF over Unnumbered Interfaces Using Virtual Links

The following graphic below shows a network configuration that uses both virtual links and an unnumbered serial link. Nokia Platform A has two OSPF areas configured (Area 1 and Area 3), but it is not physically connected to the Backbone area. Thus, a virtual link is configured between Nokia Platform A and Nokia Platform C. A virtual link is also configured between Nokia Platform B and Nokia Platform C because Nokia Platform B also is not physically

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Nokia IPSO 4.0 manual Configuring Ospf over Unnumbered Interface, Ospf over Unnumbered Interfaces Using Virtual Links, 110