[c-nsp] Influence VTI tunnel QoS based on remote site bw change?

[Fernando Santos]

Thanks for the suggestion Dale, I'll have a look into that.

In the meantime, if anybody has any more ideas please let me know.

Regards,
Fernando


On 05/03/2013, at 18:13, Dale Shaw <dale.shaw at gmail.com> wrote:

> Hi Fernando,
> 
> On Mar 5, 2013 9:52 PM, "Fernando Santos" <fernandomiguelsantos at gmail.com> wrote:
> >
> >[…]
> > We were trying to figure out if there is a way to keep only 1 tunnel between each remote and central site, while if the primary circuit goes down on a remote site, the QoS policies are afected also on the central site VTI tunnel.
> 
> This is just an untested idea but perhaps you could combine EEM on the spoke side with the "per-tunnel QoS" NHRP feature available for DMVPN?
> 
> http://www.cisco.com/en/US/docs/ios/sec_secure_connectivity/configuration/guide/sec_per_tunnel_qos.html
> 
> Maybe using EEM to change the NHRP parameters on the spoke's VTI when it switches to the backup link is enough to signal to the hub that it should use a different outbound service-policy.
> 
> I'm not sure if you'd have to be running DMVPN to make this work -- it'd have to be tested.
> 
> Cheers,
> Dale