Subject: RE: E-LSP setup

From: "Kota, Ravikumar" <[email-masked]>
Date: Thu, 27 Sep 2001 21:14:03 -0400

Hi
 
Followed to our discussion ....
If u see slide3 of the follwoing ppt 
we can send different exp packets on the same lsp.
Based on EXP value we are making different treatment  at Queue level.

DiffServ-Aware Traffic Engineering and its Applications ppt 
on 
http://www.cisco.com/warp/public/732/Tech/mpls/mpls_presentations.shtml
It may give more info connected to TE , but may be sueful upto some extent
where u can think Diffserv in MPLS architecture.

Regards
Ravikumar Kota
Cratos Networks 
100 Nagog Park, Suite 20
Acton, MA 01720
PH: (978) 263-0094 (office )
978 869 3314 (cell)
FAX: (978) 263-7401

-----Original Message-----
From: S.Manikantan [mailto:[email-masked]]
Sent: Thursday, September 27, 2001 7:08 PM
To: [email-masked]'
Subject: E-LSP setup

Hello

I have the following doubt and questions. (If my questions are stupid
forgive me :) )

For an E-LSP setup signaled with EXP<-->PHB mapping
the EXP values and the associated PHBID values are
provided in the DIFFSERV object /Diff-Serv TLV. The number of
mappings is indicated by the "MAPnb"

My doubts are

1) If an upstream node wishes to signal an E-LSP for 
'n' EXP<-->PHB mappings ( n could be 8 ), should
all the 'n' mappings be given in a single Path / Label
request message?

2) Suppose we can send 'n' Path /Label request messages
each message carrying one EXP<--> PHB mapping
should the downstream node assign the same "label"
value in the Resv / Label mapping message? 

Else

Is the Path/ Label request sent, label allocated etc.,
are implementation dependent?

thanks in advance
with best regards
mani