Exam 642-887 | Question id=3185 | QOS in a Service Provider IP NGN Environment |
Which three conditions can occur when metering traffic using a dual token bucket traffic policing QoS mechanism on Cisco routers?
A. |
conform | |
B. |
pass | |
C. |
violate | |
D. |
exceed |
How a Traffic Policing Mechanism Regulates Traffic
The time interval between token updates(Tc) to the token bucket is updated at the CIR value each time a packet arrives at the traffic policer. The Tc token bucket can contain up to the Bc value. If a packet of size B is greater than the Tc token bucket, then the packet exceeds the CIR value and a configured action is performed. If a packet of size B is less than the Tc token bucket, then the packet conforms and a different configured action is performed.