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Re: A new ID is available on the repository draft-caviglia-ccamp-pc-and-sc-reqs-00



Interesting question.

It would certainly be the case that the picture you draw could arise. I guess we would describe this in terms of SPCs. Is it necessary that identical state is held at [a] and [b]. In particular, the question of Session ID and LSP ID spring to mind.

Yes, we need clear requirements for this type of situation. Want to suggest some?

Adrian

----- Original Message ----- From: <Dimitri.Papadimitriou@alcatel.be>
To: "Adrian Farrel" <adrian@olddog.co.uk>
Cc: <ccamp@ops.ietf.org>; "Diego Caviglia" <Diego.Caviglia@marconi.com>; "Dino Bramanti" <Dino.Bramanti@marconi.com>
Sent: Wednesday, May 31, 2006 7:44 PM
Subject: Re: A nerw ID is available on the repository draft-caviglia-ccamp-pc-and-sc-reqs-00


agreed -

question: in case of move CP->MP who guarantees that the CP at state [b]
retrieves its states it had at [a] e.g.

MP->CP[a]->MP->CP[b]?

do we need a specific requirement for this case ?






"Adrian Farrel" <adrian@olddog.co.uk>
Sent by: owner-ccamp@ops.ietf.org
25/05/2006 19:53
Please respond to "Adrian Farrel"

       To:     <ccamp@ops.ietf.org>, "Diego Caviglia"
<Diego.Caviglia@marconi.com>
       cc:     "Dan Li <danli", "Dino Bramanti"
<Dino.Bramanti@marconi.com>
       Subject:        Re: A nerw ID is available on the repository
draft-caviglia-ccamp-pc-and-sc-reqs-00


Hi Diego,

Thanks for putting this I-D together. I think it gives a much clearer
picture of what you are trying to achieve with your discussion of moving
control of an LSP between the management plane and the control plane.

This seems like a reasonable set of requirements to me, and I would like
to
see some discussion from folk on whether they think this is valuable work,

and whether we should start to look for protocol solutions.

Thanks,
Adrian

----- Original Message ----- From: "Diego Caviglia" <Diego.Caviglia@marconi.com>
To: <ccamp@ops.ietf.org>
Cc: "Dan Li <danli" <danli@huawei.com>; "Dino Bramanti"
<Dino.Bramanti@marconi.com>
Sent: Wednesday, May 24, 2006 8:48 AM
Subject: A nerw ID is available on the repository
draft-caviglia-ccamp-pc-and-sc-reqs-00


A new ID is available on the ID repository

http://www.ietf.org/internet-drafts/draft-caviglia-ccamp-pc-and-sc-reqs-00.txt
.

The ID states some basic requrements for the possibility of turning a
Permanent Connection (PC) into a Soft Permanent Connection (SPC) and
vice
versa, without actually affecting Data Plane traffic, no solutions are
proposed in the ID.

Abstract

  From a Carrier perspective, the possibility of turning a Permanent
  Connection (PC) into a Soft Permanent Connection (SPC) and vice
  versa, without actually affecting Data Plane traffic being carried
  over it, is a valuable option. In other terms, such operation can be
  seen as a way of transferring the ownership and control of an
  existing and in-use Data Plane connection between the Management
  Plane and the Control Plane, leaving its Data Plane state untouched.
  This memo sets out the requirements for such procedures within a
  Generalized Multiprotocol Label Switching (GMPLS) network.


Comments and suggestions are very welcome sxpecially from the carrier
community.

Regards

Diego