Re: [mpls] new draft of the framework and requirements for Composite Transport Group

["So, Ning" <ning.so at verizonbusiness.com>]

Gregg,

 

The LSP and connection mapping to the component link in CTG is done using constrain based routing with the shortest path first.  Bi-directional LSPs being routed onto the same component link or not should not be a problem in MPLS environment.  Are you saying that in some cases in GMPLS environment, bi-directional LSP has to be carried on the same component link?  What problem would occur if they are carried on different component links?  Would that problem still exist if the different component links have the same performance objectives such as latency?  I need a bit more detail in order to understand your concern.

 

Ning So

Lead Engineer

Data Traffic Engineering

972-729-7905

 

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From: Mirsky, Gregory [mailto:gregory.mirsky at sycamorenet.com]
Sent: Thursday, October 30, 2008 1:17 PM
To: So, Ning; mpls at ietf.org
Subject: RE: [mpls] new draft of the framework and requirements for Composite Transport Group

 

Dear So,

if a bidirectional TE LSP is signaled by (G)MPLS how would CTG guarantee that the same Component Link is used in each direction? As I understand, mapping of particular TE LSP to the Component Link is local policy-based decision. If my understanding is correct, should it be a requirement for the CTG to provide controls to support co-routed mapping of bidirectional/co-routed LSP?

 

    Regards,

        Greg

 

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From: mpls-bounces at ietf.org [mailto:mpls-bounces at ietf.org] On Behalf Of So, Ning
Sent: Wednesday, October 29, 2008 2:33 PM
To: mpls at ietf.org
Subject: [mpls] new draft of the framework and requirements for Composite Transport Group

Dear all,

 

We have uploaded the draft of the framework and requirements for Composite Transport Group.

 

 

http://www.ietf.org/internet-drafts/draft-so-yong-mpls-ctg-framework-requirement-00.txt

 

 

Abstract

 

   This document states a traffic distribution problem in today's IP/

   MPLS network when multiple links are configured between two routers.

   The document presents a Composite Transport Group framework as the

   solution for the problems and specifies a set of requirements for

   Composite Transport Group(CTG).

 

We appreciate your input/comments and look forward to discussing in Minneapolis.

 

 

Ning So

Lead Engineer

Data Traffic Engineering

972-729-7905

 

 

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