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Cell Relay Retreat>MPLS WG Archive>month:2003-Sep> msg00012



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wg last call on: draft-ietf-mpls-in-ip-or-gre-02.txt - update

  • From: "W. Mark Townsley" <townsley@cisco.com>
  • Date: Wed, 03 Sep 2003 18:31:21 +0200
  • CC: mpls@UU.NET
  • User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.3) Gecko/20030312


Hi Andy,

> I'm curious what additional functionality MPLS in L2TPv3 would get you that
> GRE or direct IP encapsulation doesn't already provide.

The same two points given in the applicability statement of 
draft-ietf-mpls-in-ip-or-gre-02.txt for MPLS-in-GRE vs. MPLS-in-IP hold for 
MPLS-in-L2TPv3 vs. MPLS-in-IP. L2TPv3 also provides a method for thwarting a 
blind packet insertion attack (in the absence of IPsec) via the Cookie in the 
L2TPv3 header.

- Mark

>
> At 8/29/2003 10:26 AM -0700, David Meyer wrote:
>> One thing that would appear to be useful is to generalize the
>> draft just a bit to  mpls-in-ip-encapsulation and include L2TPv3.
>>
>> Dave