[c-nsp] BGPoPPPoEoA ?!

Aaron dudepron at gmail.com
Thu Nov 15 12:44:59 EST 2007


If you are peering with loopbacks (ebgp) you need to do multihop and
configure static routes on pointing to the loopbacks

Aaron

On Nov 15, 2007 12:38 PM, omar parihuana <omar.parihuana at gmail.com> wrote:
> Hi,
>
> mmmh maybe I'm wrong but the BGP session between CE-PE only can be eBGP and
> is necessary one peer directly connected...  for iBGP is possible to use
> loopbacks, etc, etc...
>
> Rgds.
>
>
>
>
> On 11/15/07, Adam Greene <maillist at webjogger.net> 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?
> >
> > If this doesn't work, I'll set up redundancy by tracking objects ... but
> > that will involve an upgrade of the PE IOS.
> >
> > Thanks,
> > Adam
> >
> >
> >
> >
> >
> >
> >
> > _______________________________________________
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> >
>
>
>
> --
> Omar E.P.T
> -----------------
> Certified Networking Professionals make better Connections!
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