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Doubt about label space configuration in draft-ietf-pwe3-control-protocol-04.txt

  • From: Pradosh Mohapatra <pradoshm@procket.com>
  • Date: Wed, 7 Jan 2004 06:30:14 -0800 (PST)
  • cc: mpls@UU.NET
  • X-OriginalArrivalTime: 07 Jan 2004 14:30:14.0710 (UTC) FILETIME=[C3D0F560:01C3D52A]

On Wed, 7 Jan 2004 narendrakumar.limbani@wipro.com wrote:
>
> Hi,
>
> Referring to section 3 of draft-ietf-pwe3-control-protocol-04.txt.
>
> "Note that the PW label must always be at the bottom of the packet's
> label stack and labels MUST be allocated from the per-platform label
> space."
>
> What is the principle behind allocating labels from per-platform label
> space in case of PW label?
>

The PW label can not have "per interface" scope because the egress PE
does not know, beforehand, which interface the PWE packets are going
to come in. This is decided by the PWE transport (could be LDP or any
other tunneling mechanism).

Pradosh

> With regards,
> Narendra Limbani
>
>
>
>
>