[c-nsp] 7600 - Tunnel in VRF not working over MPLS

redscorpion69 redscorpion69 at gmail.com
Tue Mar 18 09:30:00 EDT 2014


Problem solved. no mpls mls tunnel-recir and then applied command back.

Once I did this it worked.

Yeah all other stuff was in place, that was really weird.


On Tue, Mar 18, 2014 at 1:52 PM, Michele Bergonzoni <bergonz at labs.it> wrote:

> Could anyone explain why the following setup is not working, maybe there is
>> a limitation on 7600 for this?
>>
>>
>> PE1-------[MPLS]----------PE2----tun99------CE
>>
>> Basically, Tunnel 99 is in VRF. All routes including tunnel are visible in
>> VRF. Ping sourced from tunnel99 to CE works (directly connected), but when
>> I ping from PE1 tunnel99 on CE, or any other route behind tunnel99 on CE,
>> it doesn't work.
>> I have mls mpls tunnel-recir configured on PE routers.
>>
>
> You should probably take a very close look at the CEF and adjacency
> entries for the routes in Tu99 on PE2, and to the LFIB for the
> corresponding labels with "sh mpls forwarding-table".
>
> If the labels for those routes are the same, and are the aggregate label
> for the VRF, I would try "mls mpls recir-agg", if you can spare some switch
> capacity.
>
> If they aren't, I would try to make PE2 use only the aggregate for that
> VRF (if it is possible in you environment) with "mpls label mode <yourvrf>
> protocol bgp-vpnv4 per-vrf", in addition to "mls mpls recir-agg".
>
> If this doesn't work, try to post your routes, CEF, adjacencies, labels
> and mpls forwarding-table (for PE2).
>
> Best luck,
>
>                                         Bergonz
>
> --
> Ing. Michele Bergonzoni - Laboratori Guglielmo Marconi S.p.a.
> Phone:+39-051-6781926 e-mail: bergonz at labs.it
> alt.advanced.networks.design.configure.operate
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