[c-nsp] GRE tunnels between Cisco ME3600X

[Phil Mayers]

On 17/04/12 13:40, paul.magee at agencyport.com wrote:
> Hi there,
>
>
>
> Has anyone had any success with the Cisco ME3600X and GRE tunnelling? I
> gather it's not officially supported but it does accept the commands and
> does seem to work ... sort of.
>
>
>
> I have a GRE tunnel established between two of these things, they show
> up in each other's CDP neighbours, a BGP session is established between
> them, and they are exchanging routes. BGP learned routes are inserted
> into the routing table but it doesn't seem to actually route through the
> tunnel, as though for some reason, the route in the routing table is

It's probably doing it in software, and only working for 
CPU-sourced/sunk traffic.

IIRC, the ME3600 hardware is capable of GRE tunnelling, but it hasn't 
been implemented yet.

See:

https://puck.nether.net/pipermail/cisco-nsp/2011-December/082972.html