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Configuring Modular Quality of Service Congestion Management on Cisco IOS XR Software

Information About Configuring QoS Congestion Management on Cisco IOS XR Software

QC-36

Cisco IOS XR Modular Quality of Service Configuration Guide

Figure 3 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.

Packet of size B

Ye s

Action

B>Tc

Exceed

Action

Conform

CIR

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Cisco Systems QC-29 Manual do Utilizador Página 8