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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Running BGP4 on a Core Router
On Sun, Jul 09, 2000 at 07:49:37PM -0400, HANSEN CHAN wrote: > > Hi folks, > > I was hearing that typically BGP4 is run on all routers inside a POP, > including access routers connecting to customers, border routers > connecting other ISPs and core routers connecting to other POPs in the > same network. > > I can understand why BGP4 is run on access and border routers. But > running BGP4 on core routers is beyond my understanding. I thought you > don't need to run BGP4 on core routers which are considered to be > interior nodes. > > Can someone shed some light on what is the benefit of running BGP4 on > the core routers? If these routers run "normal" ip routing you have to, as each router does a lookup of the destination ip address of each packet, and forward it accordingly. If you run MPLS, you don't have to, as it uses labels to get to the next-hop router. /Jesper -- Jesper Skriver, jesper(at)skriver(dot)dk - CCIE #5456 Work: Network manager @ AS3292 (Tele Danmark DataNetworks) Private: Geek @ AS2109 (A much smaller network ;-) One Unix to rule them all, One Resolver to find them, One IP to bring them all and in the zone to bind them.
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