The MPLS WG Archive

[Alia Atlas <aatlas@avici.com>]

At 11:42 AM 3/20/2003 +0200, Nurit Sprecher wrote:

>Hi all,
>
>I am looking for a method for distributing PWs' labels of PWs within a TE
>LSP tunnel.
>The TE tunnel is signaled using the RSVP-TE signaling protocol. Is there a
>method for distributing labels for PWs that should run within TE LSP tunnel?
>I am aware of the IETF draft for signaling the PWs' labels using the LDP
>protocol, but I would like to attach a certain PW with a certain TE LSP
>tunnel. How can I gain it? Maybe I should activate the LDP for a certain PW
>within the required tunnel (inband)? Is there another way to do it but not a
>static one (by configuration)?

Hi,

You can use a targeted LDP session to distribute the labels for a PW 
between the two PEs.  How that PW travels across the PSN is independent of 
how the labels for the PW were distributed.  Thus, the PW could use either 
an LDP LSP or a RSVP-TE LSP to reach the egress PE.  Which one to use and 
how the PW is mapped to it is an internal issue on the ingress PE.

Alia


>I wonder also if there is a way to signal a TE PW?
>
>I'll appreciate your response.
>Thanks in advance, Nurit.