The MPLS WG Archive

["Mayank Kumar" <mkumar@aplion.stpn.soft.net>]

Hi
got answer for my first question:-
but then the answer to my second ques, does not give me a good reason. Why
is it necessary to have interface specific labels for atm or frame relay???
how does it matter that , we have the label encapuslated in the L2 header in
case of atm or frame-relay.Am i missing something in saying that ,we can
always assign a label from the platform wide label space , as long as that
label confirms to be a valid dlci (for frame-relay) or a valid vpi/vci
air( for atm).

regds
Mayank


Please read inline comments.

----- Original Message -----
From: "Mayank Kumar" <mkumar@aplion.stpn.soft.net>
To: <mpls@UU.NET>
Sent: Monday, July 08, 2002 4:13 PM
Subject: do we need to have disjoint label space for cr-ldp and rsvp-te


> hi
> 1: i wanted to know that do we need to support disjoint label spaces for
> cr-ldp and rsvp-te in case of their simultaneous operations.
> If yes , then what is the reason for this ???
***: No you don't need to have disjoint label space for different label
distribution protocols, if you have a central entity responsible for
assigning different labels to different protocols. Otherwise you need to.
> 2:is there a specific reason for having interface specific label space for
> atm and frame relay ????
***:In the cassse of ATM and Frame realy we encapsulate label in L2 header,
e.g in the case of ATM we use VPI/VCI field of ATM header for label.
> What is the most basic reason for going for interface specifc label space
> ???
> can a interface like atm which supports interface specifc label space , be
> not assigned a label from the platform wide label space.
>** No.
>
> thanks
> and regards
>