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Cell Relay Retreat>MPLS WG Archive>month:2001-Sep> msg00264



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mpls encapsulations

  • From: Anoop Ghanwani <anoop@lanterncom.com>
  • Date: Wed, 19 Sep 2001 07:35:45 -0700
  • Cc: mpls@UU.NET



> -----Original Message-----
> From: Shahram Davari [mailto:Shahram_Davari@pmc-sierra.com]
> Sent: Wednesday, September 19, 2001 6:55 AM
> To: 'Hemant P. Kelkar'; mpls-ops@mplsrc.com
> Cc: mpls@UU.NET
> Subject: RE: mpls encapsulations
> 
> 
> Hi,
> 
> > -----Original Message-----
> > From: Hemant P. Kelkar [mailto:hemant@cyberspace.org]
> > Sent: Wednesday, September 19, 2001 6:52 AM
> > To: mpls-ops@mplsrc.com
> > Cc: mpls@UU.NET
> > Subject: mpls encapsulations
> > 
> > 
> > Hi Everybody !
> > 
> > I have some doubt regarding the MPLS encapsulation inside 
> IP and other
> > protocols.
> > What is the aim behind the following encapsulations:
> > #1. MPLS in IP (reasons other than tunneling MPLS via IP networks)
> 
> I don't think there is any other reason. 
> 
> > #2. MPLS in ATM and FR (reasons other than heterogeneous n/w 
> > interface)
> 
> To reduce the number of control planes to one (i.e., MPLS).
> 
> > #3. MPLS in IP in Ethernet (MPLS/IP/Ethernet)
> 
> This is not a good architecture. There is no reason to have 
> IP, you could easily do MPLS/Ethernet.

You would need this for the same reason you need #1.

-Anoop