[c-nsp] 6PE FIB usage on 6500/7600

[Phil Mayers]

On 02/01/14 10:49, Mark Tinka wrote:

> I think the future of an IPv6 control plane for MPLS is in
> SR. To be honest, I wouldn't bother developing LDPv6 or
> RSVPv6 with SR on the horizon, if I were a vendor in-tune
> with the times.

Sure; SR looks like a more natural fit for MPLS than LDP ever was in 
hindsight. That said, it looks better for IS-IS users than OSPF, due to 
needing OSPF & OSPFv3 or OSPFv3 dual-AF which is not well supported.

Obviously people will have to move their vpnv6 BGP AFs to their IPv6 BGP 
RR sessions, which is a bit of a drag, but that's what peer templates 
are for (on sensible OSes).

> It is for such reasons that I don't like today's breed of
> MPLS-biased forwarding engines (like Cisco's LSP for the
> CRS, and some of Juniper's PTX line cards), because they all
> assume everything is encapsulated in MPLS, including IPv6

That's an excellent point.