[c-nsp] MPLS VPN with PE over GRE tunnels

[Gert Doering]

Hi,

On Mon, Sep 19, 2011 at 07:18:19PM -0400, Ross Halliday wrote:
> Currently our network has one switch that is at the hub of our transition to 
> MPLS as we cut various devices over and wait for maintenance windows. It has:

This "switch" would be a 6500 with all these protocols being enabled, and
the problem spot is "packet comes in MPLS-encapsulated and needs to leave
GRE-encapsulated" (or return path)?

> Any help or suggestions would be very appreciated!

There was something about the 6500 architecture that certain combinations
of ingress and egress need packets to go through the forwarding plane twice,
and you need to enable "packet recirculation" for it to do that.

The command I could find for that is "mls mpls tunnel-recir", but you
might want to verify with the docs whether this is what you want.

Cisco(config)#mls mpls ?
...
  tunnel-recir     Recirculate Tunnel packets

gert

-- 
USENET is *not* the non-clickable part of WWW!
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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