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Cell Relay Retreat>MPLS WG Archive>month:2003-Mar> msg00208



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ISIS as CE/PE protocol

  • From: Ajay Simha <asimha@cisco.com>
  • Date: Wed, 12 Mar 2003 09:37:18 -0500
  • Cc: mpls@UU.NET
  • User-Agent: Mutt/1.4i

On Wed Mar 12 09:10:19 2003, John Smith wrote:
> Hello,
> draft-rosen-vpns-ospf-bgp-mpls-06.txt defines procedures which must be implemented within
> the Provider's network when OSPF is used as the PE/CE routing protocol. Is there any
> particular reason why there have been no such standards/procedures defined for running
> ISIS as CE/PE protocol in BGP VPN domains.
> 
> Morever, are there any ISPs actually using ISIS for this purpose?

ISIS is primarly an ISP IGP. Usually the folks buying BGP VPN service from an SP are enterprises.
ISPs also buy this type of service but prefer to run BGP opposed to an IGP between themselves
and the BGP VPN provider.

-ajay
> 
> Any help in this regard will be appreciated!
> 
> Thanks and Regards,
> John Smith
> 
> 
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