IP Unnumbered 2 ???

[fkseow]

Hi here I have another question, please help out.

I refered to the Sample configuration found in Cisco website , it is on the IP Unnumbered and using IGRP, it is of the following specs;

RouterA;

Ethernet0 - 10.1.1.1 255.0.0.0

Serial0 - ip unnumbered ethernet0

but it's IGRP routed as below;

RouterA(config)# router-igrp 10

RouterA(config-router)#network 10.0.0.0 --------> (Why 's routing local subnet and NOT remote subnet?)

RouterB;

Ethernet0 - 20.1.1.1 255.0.0.0

Serial0 - ip unnumbered ethernet0

but it's IGRP routed as below;

RouterB(config)#router-igrp 10

RouterB(config-router)#network 20.0.0.0 ---------> (Why 's routing local subnet and NOT remote subnet ?)

Please clarify.

Thanks

[mlund]

The network statement is used to specify those local interfaces that you want to run the igrp process on, and which networks you want to distribute to neighbours.