Misunderstood :-). I want to sell traffic to Peer5 from peers 1,2,3 without global internet connection. (Only internet exchange points traffic). 2011/1/18 Martin Barry <marty@supine.com>:
$quoted_author = "Marek Wajdzik" ;
I have a small problem with the configuration shown in the diagram below
BGP_Peer1 ---\ BGP_Peer2 ----> --- My_BGP_Router ---- BGP_Peer5 BGP_Peer3 ---/ BGP_Peer4 --/
From BGP_Peer4 I've getting a full routing table. Peers 1,2,3 are internet exchange points. How to write filter for BGP_Peer5 to export only routes wich I get from Peers 1,2,3 (only routes to ix points, without global internet connection).
Communities.
Check to see if the routes from the exchanges are already tagged with a specific community. If not, add a community to routes received from that exchange's peers or route server.
Then filter the routes you are sending to peer 5 to only those tagged with the appropriate communities.
cheers Marty