The MPLS WG Archive

[Shahram Davari <Shahram_Davari@pmc-sierra.com>]

Hi,

Yes, but currently only DU mode (not DoD) has been defined.
What is TE PW? PW is a pt-t-pt connection, so I don't think
the PW label needs to use RSVP-TE.

-Shahram

>-----Original Message-----
>From: Nurit Sprecher [mailto:nurit.sprecher@SeabridgeNetworks.com]
>Sent: Monday, March 24, 2003 3:26 AM
>To: Shahram Davari; 'Alia Atlas'; Nurit Sprecher
>Cc: mpls@UU.NET; Mustapha Aissaoui (E-mail)
>Subject: RE: Distributing Labels for PWs within an LSP TE Tunnel 
>
>
>Thanks for your responses.
>I do look for a way to bind the (LDP) signaled PWs to the 
>(RSVP-TE) signaled
>transport tunnel LSP, in a way that both PEs know about it. 
>As I understand from your response, I should signal that the 
>PWs within the
>TE tunnel LSP.
>Is there a way to signal 'TE' PWs?
>
>-----Original Message-----
>From: Shahram Davari [mailto:Shahram_Davari@pmc-sierra.com]
>Sent: Friday, March 21, 2003 7:06 PM
>To: 'Alia Atlas'; Nurit Sprecher
>Cc: mpls@UU.NET; Mustapha Aissaoui (E-mail)
>Subject: RE: Distributing Labels for PWs within an LSP TE Tunnel 
>
>Alia,
>
>I think Nurit's question was how can we bind a PW to a 
>transport LSP, in a
>way that both PE's know about it? This would be useful if LDP uses
>per-interface label space.
>
>An extension to PW signaling may be needed. Or a DoD label 
>request that is
>pushed inside
>the tunnel LSP could be used.
>
>-Shahram
>
>
>
>>-----Original Message-----
>>From: Alia Atlas [mailto:aatlas@avici.com]
>>Sent: Thursday, March 20, 2003 2:08 PM
>>To: Nurit Sprecher
>>Cc: mpls@UU.NET
>>Subject: Re: Distributing Labels for PWs within an LSP TE Tunnel
>>
>>
>>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.
>>
>>
>