Ok, but I need none if the GW IP address from the PPP negotiation is the loopback IP address on the PE in question. That's why I have no configured static route on the CE.
On Thursday 15 November 2007 20:47:56 Aaron wrote: > Don't forget the static for the loopback > > On Nov 15, 2007 2:30 PM, Gerald Krause <[EMAIL PROTECTED]> wrote: > > On Thursday 15 November 2007 17:40:54 Adam Greene wrote: > > > Lots of o's in that subject line ... > > > > > > I'm trying to set up a BGP session over a PPPoEoA DSL line. This is in > > > the context of setting up redundant DSL lines to a single provider > > > router. I control both ends (PE and CE). PE is 7200 NPE 200, IOS > > > 12.3(15b). CE is 1841, IOS 12.4(17). > > > > > > I can't establish the BGP session. Both sides are in active state, but > > > won't go further. > > > > > > The PE ATM interface is configured as IP unnumbered pointing to > > > Loopback 0. The CE BGP neighbor thus points to the PE Loopback IP > > > address. The PE BGP neighbor points to the IP address assigned to the > > > CE Dialer (a /32 from the /23 block on the PE Loopback). > > > > > > I saw that the CE was reporting that the external BGP neighbor is not > > > directly connected, so I issued "neighbor A.B.C.D > > > disable-connected-check" to no avail. > > > > > > I tried specifying the update-source interface on both ends (loopback 0 > > > on PE, Dialer1 on CE) again to no avail. > > > > > > I'm wondering if I have to do something at the neighbor A.B.C.D > > > transport level, like disabling path-mtu-discovery (this is a wild shot > > > in the dark). > > > > > > Has anyone else successfully established BGP over PPPoEoA before? > > > > Yes, and it (still) works. As Aaron and Peter already mentioned you > > should use "ebgp-multihop" on both systems. Our config looks like this: > > > > CE config: > > ========== > > ! > > interface Dialer1 > > ! local IP address is always 10.250.250.50/32 and > > ! remote-GW IP address 10.255.255.255 - from PPP/RADIUS > > ip address negotiated > > encapsulation ppp > > ... > > ! > > ! > > router bgp 65534 > > neighbor 10.255.255.255 remote-as 123 > > neighbor 10.255.255.255 ebgp-multihop 2 > > ... > > ! > > > > PE config: > > ========== > > ! > > interface Loopback101 > > ip address 10.255.255.255 255.255.255.255 > > ! > > ! > > router bgp 123 > > ... > > neighbor 10.250.250.50 remote-as 65534 > > neighbor 10.250.250.50 ebgp-multihop 2 > > neighbor 10.250.250.50 update-source Loopback101 > > ... > > ! -- Gerald (ax/tc) _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
