Hi, There is an approach of matching on LSB from the prefixes' octets of the full routing table (even/odd) and increase local-preference for one provider.
For example: access-list 1 permit 0.0.0.0 255.254.254.255 access-list 2 permit 0.0.1.0 255.254.254.255 access-list 3 permit 0.1.0.0 255.254.254.255 access-list 4 permit 0.1.1.0 255.254.254.255 route-map ISP1 permit 10 match ip address 1 2 set local-preference 120 route-map ISP1 permit 20 match ip address 3 4 set local-preference 110 route-map ISP1 permit 1000 route-map ISP2 permit 10 match ip address 1 2 set local-preference 110 route-map ISP2 permit 20 match ip address 3 4 set local-preference 120 route-map ISP2 permit 1000 Most likely you will achieve a good distribution of best paths and thus outbound traffic among the transit providers. Moreover you can play with the wildcard masks and the matching bits in order to improve the distribution. -----Mensagem original----- De: cisco-nsp-boun...@puck.nether.net [mailto:cisco-nsp-boun...@puck.nether.net] Em nome de RAZ MUHAMMAD Enviada em: segunda-feira, 20 de dezembro de 2010 19:30 Para: cisco-nsp@puck.nether.net Assunto: [c-nsp] Outbound Load balancing using eBGP Hi all, I would like to find out how one can use BGP to load balance outbound traffic, while multi homed to 2 transit providers or ISPs and getting full routing tables, no default routes? The BGP peer at the client end is a non Cisco router, so would not be able to use the multipath feature. The load balancing is intended for all routes in the routing table, or at least to achieve some kind of load distribution. Is there any other way to achieve an optimal outbound load balancing method using eBGP? Regards _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/