The MPLS WG Archive

[Vasanthi <tvasanthi@hotmail.com>]

Hi,
    No. You don't have to use LDP to maintain the path/node state. RSVP is a
soft-state protocol and the PATH/RESERVE exchanges are your tool to maintain path
state. You can refer to RFC 2205 to understand how RSVP works.

-Vasanthi

Ramanjaneyulu Y T wrote:

> Hi,
>
>   I got one basic doubt in MPLS. For label distribution MPLS uses RSVP or
> LDP. Suppose some one uses RSVP for label distribution, Is LDP required to
> maintain path info., like node is alive or not or LSP is up or down?. I
> guess the above tasks can also achievd with RSVP without LDP. If so
> please suggest some reading material.
>
>         Thanking you.
>
>                                          Regards
>                                         Ramanjaneyulu Y.T.
>
>  " A real friend is one who walks in when the rest of the world walks
>  out."
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