We are sending the default routes via eigrp. BGP only runs on the border routers so using the BGP method probably won't work.
I was looking at filtering out a subset of customer outgoing traffic and sending it over a cheaper bandwidth provider but I did not want to send all traffic out one or the other ISP. With that said, that was why I was looking at PBR or route maps to make this work. The selected traffic would be within a /28 or /29 subnet if that helps. Thanks for the response! jason Pete S. wrote: > How are you getting the default route into your core? > > If your ISP border routers, and core are running iBGP, simply use the > local preference variable in BGP to send out the prefered ISP. If > that ISP connection goes down, the next highest local pref will become > the default. > > Depending on the routes you're receiving, and redistributing...If > you're redistributing your BGP into an IGP, you can announce two > default routes into your IGP, one with a higher metric, from each > border router running BGP. in case of ISP failure, your traffic will > get up to the ISP border routers, and then hopefully have a more > specific route between iBGP, if one ISP connection were down. Traffic > would then take its course back to the ISP border router with the > active ISP connection. > > You can also play with EEM(I can't recall if its in the Sup1 or 2, but > I'd wager no) to pull the default route from the isp border router, if > the BGP session were to drop on that router, and then re-insert it > when BGP session reconnects. > > --Pete > > On Jan 21, 2008 1:28 PM, Jason Ford <[EMAIL PROTECTED]> wrote: > >> All, >> >> I have a need to direct traffic from within our core routers out a >> specific BGP peer unless that peer is down. Here is the setup.. >> >> customer network ---> core router 03 and core router 04 --------> border >> router 01 and border router 02 ---------> our bgp peers.. >> >> Basically, the customer is connected to two 6500's running eigrp >> sessions with the border routers. The border routers are running BGP and >> eigrp. Border router 01 has a BGP connection to ISP A and Border router >> 02 has a BGP connection to ISP B. All routers are meshed together via >> GE. Core Routers are 6500's with sup1a/msfc2's fully upgraded with >> memory (yeah.. I know it should be upgraded to a sup2) and the border >> routers are 6500's with sup2/msfc2 also fully upgraded with memory. >> >> Ok, here is the question. If we would like to route all of the >> customer's traffic out ISP B unless it is down, is a PBR on the border >> routers identifying the source address and setting a next hop the best >> way of doing this? We don't care which ISP the incoming traffic goes to >> but want to control the outgoing traffic. >> >> Hopefully that gets the question across without a network diagram. >> >> Thanks for all who read and respond. >> >> jason >> _______________________________________________ >> cisco-nsp mailing list [email protected] >> https://puck.nether.net/mailman/listinfo/cisco-nsp >> archive at http://puck.nether.net/pipermail/cisco-nsp/ >> >> _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
