The MPLS WG Archive

[Mark Duffy <mduffy@quarrytech.com>]

Hi Art, are you suggesting that there is something about the MPLS VPN case
in particular that favors mpls-in-gre over mpls-in-ip?  If so would you
explain that?

Thanks, Mark


At 01:32 PM 8/15/02 -0700, Art King wrote:
>Connecting MPLS VPN PE's over non-MPLS core in a Carrier is a
>good example case for GRE usage.
>
>----- Original Message -----
>From: "Eric Rosen" <erosen@cisco.com>
>To: "Shahram Davari" <Shahram_Davari@pmc-sierra.com>
>Cc: <mpls@UU.NET>; "Loa Andersson" <loa.andersson@utfors.se>; "George
>Swallow" <swallow@cisco.com>
>Sent: Wednesday, August 14, 2002 11:27 AM
>Subject: Re: Encapsulating MPLS in IP or GRE
>
>
>>
>> In some  cases you  might already have  a GRE  tunnel through which  you
>are
>> supporting a routing adjacency.  It should be possible to send MPLS
>packets,
>> as  well  as  IP  packets,  through  such  tunnels,  and  this  requires
>an
>> MPLS-in-GRE encapsulation.
>>
>> There are also  other cases in which GRE tunnels (as  opposed to IP
>tunnels)
>> are  commonly used,  and you  should be  able to  send MPLS  packets
>through
>> them.
>>
>