On Router B, advertise those specific /24 prefixes instead of the entire
/16.
Router_B#
Router bgp 300
network 155.134.1.0 255.255.255.0
network 155.134.4.0 255.255.255.0
neighbor 1.1.1.1 remote-as 400
Without knowing your addressing scheme, you might run into problems with
this approach. If you don't have those in your routing table, it will not
advertise them. If necessary, you can use static routes to accomplish this.
> I am testing BGP in a lab
>
> ---------- ---------
> | RA |------| RB |
> ---------- ---------
>
> 1) Router A has networks 155.134.1.x, 2.x, 3.x and 4.x beind it
>
> 2) Router B has networks 128.128.1.x, 2.x, 129.129.1.x, 2.x, 130.130.1.x
> behind it
>
> Router_A#
> router bgp 400
> network 128.128.0.0
> neighbor 1.1.1.2 remote-as 300
>
> I am just propogating 128.128.x.x across to router A and it works
fine....
>
> Router_B#
> Router bgp 300
> network 155.134.0.0
> neighbor 1.1.1.1 remote-as 400
>
> I am trying to propogate just networks 155.134.1.x and 4.x to router B...
> and I cannot seem to do it...
>
> Santosh Koshy
> Communications Analyst
>
>
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