/mcpscheduler services the queues based on weights so that the bandwidth guarantees are honored. Priority Queue Weighted Fair Queuing (PQ−WFQ), also called IP RTP Priority A single interface command is used to provide priority servicing to all UDP packets destined to even port numbers within a specified range. Simple, one command configuration. Provides priority servicing to RTP packets. All other traffic is treated with WFQ. Real−Time Conferencing Protocol (RTCP) traffic is not prioritized. No guaranteed bandwidth capability.4 LLQ, previously called Priority Queue Class−Based Weighted Fair Queuing (PQCBWFQ) Modular QoS CLI with priority queue is used to classify traffic. Classified traffic is placed into a priority queue, reserved bandwidth queues, or a default unreserved queue. A scheduler services the queues based on weights so that the priority traffic is sent first (up to a certain policed limit during congestion) and the Simple configuration. Ability to provide priority to multiple classes of traffic and give upper bounds on priority bandwidth utilization. You can also configure bandwidth guaranteed classes and a default class. No mechanism to provide multiple levels of priority yet, all priority traffic is sent through the same priority queue. Separate priority classes can have separate upper priority bandwidth bounds during congestion. However, sharing of priority queue between applications can potentially introduce jitter.4