Description: Committeed Information Rate (CIR) assignments for user queues 1 to 4. CIR is the percentage of maximum bandwidth for user traffic. (a) In queue operation expedite mode, User Queue 1 has 100% of CIR. But CIRs can still be assigned for other queues. This is because if there is not much traffic for queue 1, CIRs of other queues can still be observed. However, the sum of CIRs for queues 2 to 4 should not be greater than 100%. (b) In queue operation priority mode, the sum of CIRs of user queues 1 to 4 must not be greater than 100%. In cosideration of Qos can be disabled, or less than 4 user queues can be used, the only condition to check if CIRs are vaild is that CIRs of used queues must not be greater than 100%. Example1: 25 25 25 25. Example2: 25 50 25 0. In example 2, the CIR of queue 1 is 25%, the CIR of queue 2 is 50%, and CIR of queue 3 is 25%, and CIR of queue 4 is 0.