4.1.d Implement and troubleshoot DMVPN [single hub]

4.1.d [iii] QoS profile

The Per-Tunnel QoS for DMVPN feature introduces per-tunnel quality of service (QoS) support for Dynamic Multipoint VPN (DMVPN) and increases per-tunnel QoS performance for Internet Protocol Security (IPsec) tunnel interfaces. This feature allows you to apply a QoS policy on a DMVPN hub on a tunnel instance (per-endpoint or per-spoke basis) in the egress direction for DMVPN hub-to-spoke tunnels.

The QoS policy on a DMVPN hub on a tunnel instance allows you to shape the tunnel traffic to individual spokes (parent policy ) and to differentiate individual data flows going through the tunnel for policing (child policy). The QoS policy that is used by the hub for a particular endpoint or spoke is selected by the Next Hop Resolution Protocol (NHRP) group in which the spoke is configured. Even though many spokes may be configured in the same NHRP group, the tunnel traffic of each spoke is measured individually for shaping and policing.

Adam, Paul (2014-07-12). All-in-One CCIE V5 Written Exam Guide (Kindle Locations 4612-4617).  . Kindle Edition.