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Cell Relay Retreat>MPLS WG Archive>month:2002-Apr> msg00153



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PHP

  • From: neil.2.harrison@bt.com
  • Date: Thu, 18 Apr 2002 18:22:43 +0100

David, please see below. regards, Neil
> -----Original Message-----
> From: David Charlap [mailto:David.Charlap@marconi.com]
> Sent: 17 April 2002 22:04
> To: mpls@UU.NET
> Subject: Re: PHP
> 
> 
> Sandeep B wrote:
> > 
> > You mention using 0x0800 as L3PID no matter what intermediate L2
> > protocol is carrying this traffic. Lets say we have a LDP session
> > running over another RSVP Session and this session is a VPN for a
> > frame relay circuit carrying IP traffic. Wouldn't we use a L3PID of
> > LDP-MPLS (0x8847) instead of IP for the RSVP session.
> 
> No.  When you tunnel one LSP through another, you should push a new
> label onto the label stack.  The labeled packet's payload is still IP.
NH=> This does not make any sense to me wrt XoverMPLS....where X can be FR,
ATM, ethernet or even SDH.  IMO a given LSP of level N should only care
about the immediate payload it carries.
<snipped to end>

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    • PHP
      • From: David Charlap <David.Charlap@marconi.com>