[c-nsp] BGP with yourself...
Jérôme Fleury
jeje at jeje.org
Wed May 7 13:53:21 EDT 2008
Yes, but you probably can't do it between global and VRF since the
peering works because peer addresses are exchanged with route-target.
This cannot be accomplished with global routing table I guess
(actually I didn't manage to do it).
On Fri, Apr 25, 2008 at 3:01 AM, Wink <dwinkworth at wi.rr.com> wrote:
> Er..
>
> There is a feature in IOS to accomplish inter-VRF routing on the same
> router. It is accomplished by spoofing the router-id within a VRF.
>
> http://www.cisco.com/en/US/docs/ios/12_2sr/12_2sra/feature/guide/srbgprid.html
>
>
>
> Luan Nguyen wrote:
> > Very interesting. I have a problem with having an ethernet in global doing
> > NAT over a VRF, and the vrf doesn't know how to get to the ethernet LAN
> > segment in the global.
> > I was thinking of just doing:" ip route vrf whatever 1.1.1.0 255.255.255.0
> > 3.3.3.3 global, where 3.3.3.3 is just some bogus nonexistence address (just
> > to dump the packets destined for 1.1.1.0 out into the global since you can't
> > put ethernet0 global because you can't do VPN route to a non-point-to-point
> > interface)
> > I can imagine us using this "dynamic route exchanger" way when needing to
> > move lots of routes.
> >
> > -lmn
> >
> > On Thu, Apr 24, 2008 at 5:19 PM, Asbjorn Hojmark - Lists <lists at hojmark.org>
> > wrote:
> >
> >
> >>> Now it trying to have an iBGP-session with itself,
> >>>
> >> How strange. Normally it'll complain that it can't peer with
> >> itself.
> >>
> >>
> >>> a thing I normally can't configure. :-)
> >>>
> >> That actually is possible: Set up two loopbacks, create a tunnel
> >> between the loopbacks, and peer over that tunnel with one end of
> >> the BGP session in a VRF (vpnv4).
> >>
> >> (I did that recently to get routes from the global table into a
> >> VRF. It's annoying there's no good way to do that on a single
> >> router).
> >>
> >> -A
> >>
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