[c-nsp] LDPv6 Census Check

[adamv0025 at netconsultings.com]

> From: David Sinn
> Sent: Thursday, June 11, 2020 4:32 PM
> 
> However if you move away from large multi-chip systems, 
> to a system of fixed form-factor, single chip systems, labels fall
> apart at scale with high ECMP. Needing to enumerate every possible path
> within the network or having to have a super-deep label stack removes all
of
> the perceived benefits of cheap and simple. 
>
Looks like the deployments you describe are large DC Clos/Benes fabric, then
the potentially deep label imposition would be done by the VMs right?
On transit nodes the 64x ECMP or super-deep labels is no problem for
NPU/lookup process as it's always just top label lookup and resolving to a
single egress interface.

adam