routing

Recently I configured a router to be part of an MPLS, and it was using BGP for advertising routes with in the MPLS "cloud". By default BGP will advertise routes for interfaces directly attached to the router. Unfortunately I needed to also advertise more subnets that were “behind” the router, than those that were directly attached. I knew there had to be a simple way to add this, and quickly found that I needed a “network” statement in the BGP section of the configuration.

I needed to advertise 172.31.0.0 255.255.0.0 to the rest of the cloud.

Sometimes routing can get tricky in different networking environments. It is not uncommon to be required to add routes to devices such as a F5 Big-IP.