I have a need to apply QOS for Voip in my SOHO network. the spokes are 871's with DMVPN set up to 3845 NHS's.
we have GRE tunnels between each site and need to provide some sort of QOS to support the VOIP traffic. Most of the documentation out there discusses Pre-shared IPSec with GRE but not DMVPN.
I found this link
and the contact e-mail bounced back as undeliverable. :)
I would love to use auto qos voip trust but its not supported on GRE tunnels.
I have also looked at qos pre-classify but found the following...
In addition to the usual considerations for QoS over VoIP, these additional considerations need to be made:
1.Ensure that the packet marking for the IP packets is being copied to the GRE tunnel header.
The recommended way of configuring this is to issue the qos pre-classify command to the tunnel interface, and add the service policy to the physical interface.
2. Ensure that the public carrier is capable of providing QoS based on the packet marking you provide.
Why would the Carries need to provide QOS if the packets are encrypted and wrapped in GRE?
I am confused as to how exactly this will work.