BGP Advertised Routes

[admin]

Hi, guys:

I have an iBGP peering between R1 and R2, the topology and configs are shown below:

http://www.netbraintech.com/share/BGP_Advertised_Routes.gif
I tried to advertise 4 connected networks through BGP using the network statement on R2, why R2 is not advertising the routes to R1?

[David.C]

You have the network masks configured wrong in the network statements under BGP process. Change them to the following and you should be fine:

network 10.0.0.0 mask 255.255.0.0 -> network 10.0.0.0 mask 255.255.255.0
network 10.1.0.0 mask 255.255.0.0 -> network 10.1.0.0 mask 255.255.255.0
network 10.2.0.0 mask 255.255.0.0 -> network 10.2.0.0 mask 255.255.255.0
network 10.3.0.0 mask 255.255.0.0 -> network 10.3.0.0 mask 255.255.255.0

[Chris]

it works with the modification, thanks a lot.