All
We would appreciate some ideas for the best method of implementing limited traffic engineering via BGP for our current network. We have two EBGP routers in the same physical location with and IBGP connection between them, each are dual homed to 3 Tier 1 ISP's and single homed to one other ISP. There is very little transit traffic, almost all is outbound responses from customer servers in our colo facility. Router A A -----------10Mb/s-------------- ISP #1 A -----------10Mb/s---------------ISP #2 A -----------10Mb/s---------------ISP #3 A -----------10Mb/s---------------ISP #10 | | | Router B | B -----------10Mb/s-------------- ISP #1 B -----------10Mb/s---------------ISP #2 B -----------10Mb/s---------------ISP #3 B -----------10Mb/s---------------ISP #20 We currently do not enforce any PBR, our outbound route selection algorithm is default "shortest AS-PATH" destination network with the addition of "BGP Multi-Path" so that any return traffic to routes with equal AS-Path lengths will balance among all the connections with equal cost. We are going to upgrade the bandwidth on the "ISP #1" connection to a GbE on both routers and leave the others at the current bandwidth. This will be much less expensive connection per Mb/s, for that reason we would like to prefer it for the return path for all outbound traffic to any destination that does NOT originate from with the AS of one of our other directly connected providers. Our thoughts is that approach will combine both routing efficiency and economy. The question is the best method to accomplish this using BGP, and preferably without having to coordinate MED's or Community values with our providers. Looking forward to hearing your opinions. Jack _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp