Basic traffic policing is explained in Chapter 3, Traffic Policing, which covers single-level policing. The Qumran device support two level hierarchical policing in addition to single level traffic policing (Hierarchical policing is also in compliance with RFC 2697 and RFC 4115).

Hierarchical policing ensures traffic policing in two levels in serial mode. Traffic is policed with a “child policer” configuration first, and then policed at a second level, the “parent policer” configuration. Thus, traffic is treated with two levels of policing.

Hierarchical policing will be useful when traffic to be policed per service and additionally to be policed per customers of that particular service. Hierarchical policing is useful when multiple streams (such as voice, data) of customer traffic to be policed and additionally, traffic to be policed per customer. Configuration considerations for hierarchical policing are same as mentioned in Chapter 3, Traffic Policing.