/mcpqueue limits. The queue limits are calculated based on average packet size, Maximum Transmission Unit (MTU), and the percentage of bandwidth to be allocated. Queue limits (in number of bytes) are de−queued for each queue. Therefore it provides the allocated bandwidth statistically. bandwidth allocation for different queues. approximate. There are a limited number of queues. Configuration is relatively difficult.1 Priority Queuing (PQ) Traffic is classified into high, medium, normal, and low priority queues. The high priority traffic is serviced first, followed by medium, normal and low priority traffic. Has been available for a few years. It provides priority servicing. Higher priority traffic starves the lower priority queues of bandwidth. No bandwidth guarantees are possible.2 Class−Based Weighted Fair Queuing (CBWFQ) Modular QoS CLI is used to classify traffic. Classified traffic is placed into reserved bandwidth queues or a default unreserved queue. A Similar to LLQ, except that there is no priority queue. Simple configuration and ability to provide bandwidth guarantees. No priority servicing is possible.3