Subject: RE: E-LSP setup

From: Shahram Davari <[email-masked]>
Date: Fri, 28 Sep 2001 06:55:39 -0700

Hi,

> 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?

Yes.

> 
> 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? 
> 

No. In fact the downstream assigns a different label and therefore you will have "n" E-LSPs, each carrying only one PHB. 

Unless the new request has the same LSP-ID and the Modify_FLAG set, which means that a change in the LSP is requested. In fact I think the authors of "draft-ietf-mpls-crlsp-modify-03.txt" draft may want to mention in their draft, that Diffserv TLV may also be modified.

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

Sorry I don't understand this question. Could you please explain it more.

Yours,
-Shahram