static routes and routing protocols

carl_townshend · ‎02-20-2008

hi all

if I have 3 routers all routing using bgp.

and say they are linked A-B-C,

I want a default route on router B to be seen by router A but not C, what do I need to do ?

Istvan_Rabai · ‎02-20-2008

Hi Carl,

You need to filter out the default route from the updates of Router B that are sent to router C.

For this you can use a prefix-list or a route-map in the approriate "neighbor x.x.x.x prefix-list yyyy out" or "neighbor x.x.x.x route-map yyyy out" command.

Don't forget to use the "clear ip bgp x.x.x.x soft out" command to refresh the bgp table of the neighbor.

Do you need a more detailed description of the config?

Cheers:

Istvan

carl_townshend · ‎02-21-2008

yes a little more detail wopuld be great

thanks