Subject: RE: MPLS in IP

From: Shahram Davari <[email-masked]>
Date: Fri, 14 Sep 2001 08:08:02 -0700

Hi Hemant,

> LDP can be used for signalling between non-adjacent LSRs. If 
> two LSRs are
> connected to each other using the MPLS-in-IP, can we assume 
> that the LDP
> runs smoothly ?

Yes.

> If we can't run RSVP/CR-LDP for resource reservation, on this 
> path, how to
> do resource reservation ?

Your IP tunnel could actually be created using an instance of RSVP. And therefore you could reserve resources. But remember this instance of RSVP has nothing to do with MPLS.

> A last concern, how to support multipoint to point 
> connections using this
> approach ?

If you distribute the same label for an FEC to many LSRs at the edge of the IP network, then you have mp-t-p.

Yours,
-Shahram