hi,
I think i have the solution, but just want to be sure if my assumptions are correct. So here goes, I have two or more providers/peers P1,P2,P3.. now I have many sites/networks/AS (AS1,NET2,AS4..) to/from wich I want to balance the traffic. Up to now I have static routing which handles the traffic as specified below, but I have to remove if i want to move to BGP and have all its bell and wishes - load balancing, link backup ..etc.. Say I want traffic to AS1 to go trough P2, instead P1 what I do is (pseudo code follow) :
neigboor P1 route-map rm-P1-out out
route-map rm-P1-out permit 10 match as-path 1 set as-path prepend myAS