How about using object tracking? Everything sends default traffic to one BGP router, and, if the object is fails, the router uses a higher-metric static that points to the other BGP router. Of course, that puts all the load on the primary.
http://www.cisco.com/en/US/products/sw/iosswrel/ps5413/products_feature_ guide09186a00801d862d.html ----- Aaron Conaway > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Dirk-Jan van Helmond > Sent: Thursday, September 27, 2007 10:28 AM > To: Vincent De Keyzer > Cc: [email protected] > Subject: Re: [c-nsp] Redundant default route, without > round-robin routing > > Vincent, > > If you want to multihome in an 'active/active' configuration, you need > full tables... > > > regards, > dirk > > > > > > Hello list, > > > > > > > > I would like your ideas to complete my design. > > > > > > > > This is an ISP network. All 10 routers in the city are > interconnected on a > > /27 subnet, over which everybody has a full OSPF adjacency > with the DR and > > the BDR. > > > > > > > > Two of those routers are BGP-connected to the upstream > providers (one > > each). > > The other routers are access routers, and cannot hold a > full BGP table; > > they > > hence need a default route. > > > > > > > > I was thinking of having both BGP routers advertising a > default route in > > OSPF; but in this case, in order to limit packet > out-of-sequence problems, > > I > > want to make sure that every IP flow uses the same default gateway. > > > > > > > > Is there a way to ensure that? Or should I proceed > differently at routing > > level (how) ? > > > > > > > > Thanks in advance, > > > > > > > > Vincent > > > > _______________________________________________ > > 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/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
