Hi Everyone,
We tag routes received from upstreams + peers(In BGP session), so we can easily control what we advertise to our customers that peer with us eg. Customer A only wants routes advertised to them from our "peering" partners(i.e. no Internet), Customer B only wants full table from our upstream carrier A, but nothing from carrier B...this works fine.
My question is, how do we tag our own address block in a similar fashion? (As we are not "receiving" it from someone via BGP, we cant tag it that way)
i.e. If customer C wants our peering partner ranges, but also all of "our" range...it would be really simple to just have all our routes tag'd so we can create a community-list with the permitted community tags, create a route-map that matches the community-list, then add it to the neighbour statement? We can then even go further and break up our IP allocation into subsets, so customers can be restricted to certain "views/areas" of our network.
Ive had very little sleep, so Im probably missing something extremely trivial here, or there is a much "easier" way to do this :)
Cheers.
