[c-nsp] GRE Tunnel interfaces in MPLS VRF

[Phil Mayers]

Zahid Hassan wrote:

> I am having to configure a GRE tunnel between a

...

> interface Tunnel1
>  ip vrf forwarding test
>  ip address 192.168.1.1 255.255.255.252
>  ip mtu 1460
>  keepalive 10 3
>  tunnel source 219.168.33.6
>  tunnel destination 211.151.241.108
>  tunnel mode ipip
>  end

Correct me if I'm wrong, but that's *not* a GRE tunnel. That's an IP-IP 
tunnel, and will not be hardware accelerated AFAIK by the sup720 (though 
that should not matter, performance aside)

> 
> Also I am seeing packets hitting the CE from the PE but not getting back to
> the PE.
> I am running OSPF over the tunnel and I have all the necessary routes in
> place.

It *really* sounds like a routing problem. Have a delve into the LSDB on 
PE and CE to check the link states originating from either end of the 
routing adjacency.