Re: LCAS and GMPLS

["Adrian Farrel" <adrian@olddog.co.uk>]

Hi Huub, Wataru,

I think the original proposal is that SG15 may want to send CCAMP a
liaison about this work. That would certainly be fine.

I don't think that CCAMP can send a liaison back to support the work
without having seen it first.

With regard to the solution space for the problem:
- If the solution lies entirely within LCAS then it is out of scope for
CCAMP. The LSP will simply be torn down when the LCAS synchronization has
been done.
- If the problem is to be solved within GMPLS, then we have a suitable
mechanism already.

Thus, it turns out that it is important to scope problems not just
functionally, but according to which components are intended to resolve
them.

Very obviously, the industry does not need or want two solutions to the
same problem.

Adrian
----- Original Message ----- 
From: "Huub van Helvoort" <hhelvoort@chello.nl>
To: "ccamp" <ccamp@ops.ietf.org>
Sent: Sunday, July 31, 2005 3:21 PM
Subject: Re: LCAS and GMPLS


> Hello Wataru,
>
> You wrote:
>
> > I forward a nice comment from Mr. Huub van Helvoort.
>
> Thank you for forwarding.
> (I hope I can send this message the list myself).
>
> > His comments indicates we need liason from ITU-T SG-15 regarding to
> > this issue.
>
> This is a good proposal, it will indicate to ITU-T SG15/Q11
> that IETF/CCAMP supports this enhancement.
>
> Kind regards, Huub.
>
> --- from message 27-7-2005 ---
>
> >>
> >> One point for the problem statement could be that in order to
> >> guarantee a hitless removal of one of the members in a VCG
> >> (decrease of bandwidth) there is a mandatory sequence:
> >> First remove member at ingress node, wait for confirm and
> >> only then remove path and member at egress node.
> >>
> >> However, a solution was presented at the last ITU-T SG15/q11
> >> meeting that removes this requirement.
> >>
> >> Cheers, Huub.
>
> -- 
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