[j-nsp] RVSP signaled L3VPN and RRs

[Daniel Verlouw]

On Thu, Aug 18, 2016 at 5:46 PM, raf <raph at futomaki.net> wrote:
> Hum my RRs do NHS, and I don't think I could easily change this.

if your RRs do NHS for l3vpn routes, it will break the fowarding path;
- in your scenario, your PEs don't have RSVP LSPs towards your RRs
- and even if they would (for example if you run LDP on your RRs):
your RRs don't have VRFs, so the inner VPN label lookup would fail

> Without NHS this is effectively not needed as I already have the loopbacks
> of all my PEs in inet.3 populated via RSVP.

PEs have inet.3 populated via RSVP in your case, the RRs don't. That's
why you change the RIB resolution for bgp.l3vpn.0 on the RRs, so it
can correctly resolve and reflect the l3vpn routes. You don't change
the resolution on the PEs, because you want them to use the RSVP LSPs
in inet.3

  --Daniel.