4.1.d [iv] Pre-classify
Configure qos pre-classify in VPN designs where both QoS and IPsec occur on the same system and QoS needs to match on parameters in the cleartext packet other than the DSCP/ ToS byte.
Adam, Paul (2014-07-12). All-in-One CCIE V5 Written Exam Guide (Kindle Locations 4647-4648). . Kindle Edition.