Re: Upstream Labels in GMPLS

["venkat d" <balu_dv@rediffmail.com>]

Hai,

     When a bi-directional request is sent for path establishment,any kind of failure irrespective of any error occurring for path towards downstream or path towards upstream will result in failure of the request as a whole. So no path is established in either and the intiator has to try again with new set.

Thanks
Venkat



On Mon, 02 Dec 2002 Marcos Antonio De Almeida Cora wrote :
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>Hi,
>
>I have some doubts on Upstream Labels in GMPLS.
>First, GMPLS supports both "unidirectional LSPs" and "bidirectional LSPs" ???
>I would like to know if when a initiator node send a request message
>(Path/RSVP or Label Request/CR-LDP) with a Upstream Label, and this label is
>not suitable for use at the next LSR, it must reject the request message
>and send a "Error message" to the initiator node. In this case, the Error
>message may include an acceptable Label Set to tell the Upstream LSR wich
>labels would have been succeful.
>But if Upstream LSR decide to fail the LSP set up, my doubt is: The
>unidirectional LSP will set up and just the bidirectional LSP not is set
>up ?? or both uniderectional and bidirectional will fail, and LSR
>initiator will try again ??
>
>Thanks,
>
>        Marcos
>
>_________________________________________________________________
>
>   Marcos Ant�ônio de Almeida Cor�á
>   School of Electrical and Computer Engineering
>   Departament of Telematics
>   State University of Campinas/Brazil - UNICAMP
>   Phone: +55 (19) 3788.3711 - Branch: 73723
>   Home Page: www.dt.fee.unicamp.br/~cora
>_________________________________________________________________
>
>
>
>
>
>


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