Re: [PCN] Piggybacking -- a new edge behaviour

[<philip.eardley at bt.com>]

> 
> Tom, I don't see you difference (2) as significant - I think that the
> admission decision can be made at the ingress or egress for either
[the
> case of centralised decision point makes no difference; if you want to
> fate share pcn signalling & resource signalling, then clearly the
latter
> must go through the centralised node]
> 
[PTT] No. You are confounding the per-flow decision with the reporting
of an 
admission state that conditions that decision. The actual decision
whether to 
admit a specific flow can be made at the egress node only when resource 
signalling is being used. Otherwise it MUST be made elsewhere.

[phil] don't agree with this MUST - you can make the decision wherever
and this then sets what signalling msgs are needed. 
But sure, I think it's fine for the i-d covering the case without the
resource signalling to assume that the actual decision is not at the
egress.