[j-nsp] BGP RR in MPLS VPN

[Anton Smith]

Hi,

Senad wrote:
 > Scott, I AFAIK, unless P (RR) has PE's loopbacks (if IBGP) or 
physical > links (whatever is BGP NH) in its inet.3 table, the VPN 
routes will be > hidden. Therefore, we do need LSPs from PE to RRs. Plz, 
correct me if >I am wrong. It's been a while and can't jump on boxes 
right now. HTH,
 > Senad

 > --- Scott Morris <swm at emanon.com> wrote:
 > > No.  The RR will simply pass around routing
 > > information.  As long as the
 > > next-hop IP remains unchanged (PE to PE) then your
 > > LSPs have no need to go
 > > through the RR.
 > >
 > > HTH,
 > >
 > > Scott

Senad, I think you are correct. If the next-hops are not resolvable on 
the RR it won´t re-advertise them.

Does anyone know if there is a reason for this? And if so, are there any 
plans to put some kind of override knob in for this situation? Does the 
P really need LSPs to the PEs? Just because the P cannot resolve the 
next-hop does not necessarily mean the PEs will be unable to.

Regards,
Anton