The MPLS WG Archive

["Suryanarayana, Ananth" <ananth@celoxnetworks.com>]

If MPLS over IP is used, how can the overlapping VPN IP address be handled..
In case of multiple labels, the label would distinguish the overlapping
address spaced packets correctly , isn't it?

Ananth

-----Original Message-----
From: Shahram Davari [mailto:Shahram_Davari@pmc-sierra.com]
Sent: Friday, May 31, 2002 1:48 PM
To: 'Suryanarayana, Ananth'; 'mpls@uu.net'
Cc: 'ppvpn@ppvpn.francetelecom.com'
Subject: RE: Basic LDP Question


1) My question was explicitly related to LDP which can't do source-routing.
2) I was thinking of MPLS over IP not IP over IP.

-Shahram

> -----Original Message-----
> From: Suryanarayana, Ananth [mailto:ananth@celoxnetworks.com]
> Sent: Friday, May 31, 2002 1:43 PM
> To: Shahram Davari; 'mpls@uu.net'
> Cc: 'ppvpn@ppvpn.francetelecom.com'
> Subject: RE: Basic LDP Question
> 
> 
> traditional IP forwarding is a hopbyhop basis and hence very difficult
> manage the path taken by a packet (end-too-end)... I think 
> MPLS is like
> source-routing, but with much more control over the packet 
> flow.. and one of
> the other uses is for seting up vpns using multiple label 
> header stacks,
> which is much more simple and efficient then maintaining IP over IP
> tunnels..
> 
> Ananth
> 
> 
> 
> -----Original Message-----
> From: Shahram Davari [mailto:Shahram_Davari@pmc-sierra.com]
> Sent: Friday, May 31, 2002 1:28 PM
> To: 'mpls@uu.net'
> Cc: 'ppvpn@ppvpn.francetelecom.com'
> Subject: Basic LDP Question
> 
> 
> Hi,
> 
> What problem a mp2p LDP-based MPLS network is trying to solve 
> (like the one
> used in RFC2547) that can't be done with pure IP forwarding?
> 
> Note: Don't tell me fast forwarding, because we can do fast 
> IP lookup as
> well.
> 
> Yours,
> Shahram
>