Fw: New Liaison Statement, "Respnse to Your Liaison on GMPLS Calls"

----- Original Message ----- 
From: "Adrian Farrel (IETF CCAMP WG)" <adrian <at> olddog.co.uk>
To: "Greg Jones" <greg.jones <at> itu.int>
Cc: "Kam Lam" <hklam <at> alcatel-lucent.com>; "Stephen Trowbridge" 
<sjtrowbridge <at> alcatel-lucent.com>; "Ross Callon" <rcallon <at> juniper.net>; 
"Dave Ward" <dward <at> cisco.com>; "Scott Bradner" <sob <at> harvard.edu>; "CCAMP 
Mailing List" <ccamp <at> ops.ietf.org>; "Adrian Farrel" <adrian <at> olddog.co.uk>; 
"Deborah Brungard" <dbrungard <at> att.com>; "Adrian Farrel" 
<adrian <at> olddog.co.uk>; "Deborah Brungard" <dbrungard <at> att.com>
Sent: Friday, February 01, 2008 11:23 PM
Subject: New Liaison Statement, "Respnse to Your Liaison on GMPLS Calls"

>
> Title: Respnse to Your Liaison on GMPLS Calls
> Submission Date: 2008-02-01
> URL of the IETF Web page: 
> https://datatracker.ietf.org/public/liaison_detail.cgi?detail_id=414
>
> From: Adrian Farrel(IETF CCAMP WG) <adrian <at> olddog.co.uk>
> To: ITU-T Q14/15(Greg Jones <greg.jones <at> itu.int>)
> Cc: Kam Lam <hklam <at> alcatel-lucent.com>
> Stephen Trowbridge <sjtrowbridge <at> alcatel-lucent.com>
> Ross Callon <rcallon <at> juniper.net>
> Dave Ward <dward <at> cisco.com>
> Scott Bradner <sob <at> harvard.edu>
> CCAMP Mailing List <ccamp <at> ops.ietf.org>
> Reponse Contact: Adrian Farrel <adrian <at> olddog.co.uk>
> Deborah Brungard <dbrungard <at> att.com>
> Technical Contact: Adrian Farrel <adrian <at> olddog.co.uk>
> Deborah Brungard <dbrungard <at> att.com>
> Purpose: In response
> Body: Thank you for your liaison to CCAMP on GMPLS Calls from your 
> Stuttgart interim meeting in September 2007.
>
> In your liaison, you noted that the GMPLS call is assumed to be as general 
> as possible, and you asked what other call applications there may be in 
> addition to ASON and the CCAMP VCAT draft. At this moment, there are four 
> applications on which the CCAMP working group is working where GMPLS calls 
> are applied. The first two are ASON and VCAT as you note. The third is 
> related to ASON and is the multi-layer network. The fourth provides 
> support for the MEF UNI in coordination with the OIF. Other topics in the 
> future might include OAM coordination, billing, and client-facing port 
> capability negotiation.
>
> Your observations about how TNA information is not used in the propagation 
> or delivery of the [call] message, but may be used [by call controllers] 
> to identify the destination UNI and hence [the destination] Network Call 
> Controller agrees with our understanding and intentions. In practice, a 
> large range of information may be used by call controllers to route 
> calls - that is, to select a series of call controllers between call 
> source and call destination - although we would not wish to preclude 
> source-routing of calls. It is our intention that the generic call message 
> should be capable of being extended to carry any information required by 
> any application of the call message.
>
> In this light you ask for guidance on how to carry ASON call information 
> across a GMPLS network so that it can be reconstructed at ASON call 
> boundaries, and say that you support the resumption of work on a CCAMP I-D 
> on ASON applicability to address the above and would welcome the 
> opportunity to contribute through liaisons. We welcome your support and 
> look forward to working with you in this context. As above, we note that 
> the GMPLS call message (the Notify message) is not limited to the exchange 
> of information between call end points, but can also exchange information 
> between transit call controllers by forming call segments as described in 
> section 7.3.1 of RFC 4974. Work on carrying ASON call information within a 
> GMPLS call message falls within the CCAMP charter and we hope that 
> interested parties will bring ideas forward through the normal process 
> which is, of course, contribution-driven. We would welcome input from all 
> sources either through the CCAMP mailing list or throu
> gh liaisons.
>
> Best regards,
> Adrian Farrel and Deborah Brungard
> CCAMP working group co-chairs
> Attachment(s):
> No document has been attached
>
>
>