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Cell Relay Retreat>MPLS WG Archive>month:2002-Apr> msg00155



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PHP

  • From: David Charlap <David.Charlap@marconi.com>
  • Date: Thu, 18 Apr 2002 13:27:37 -0400

neil.2.harrison@bt.com wrote:
> David Charlap wrote:
>> 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.
>
> This does not make any sense to me wrt XoverMPLS....where X can be
> FR, ATM, ethernet or even SDH.

None of these are MPLS frames, so 0x8847 is still wrong.

-- David

  • References:
    • PHP
      • From: neil.2.harrison@bt.com