Bandwidth Control; Chapter 17 Bandwidth Control; Cir And Pir - ZyXEL Communications MS-7206 - EDITION 1 Manual

C
H A P T E R
This chapter introduces Committed Information Rate (CIR) and Peak Information
Rate (PIR) and then shows you how to configure the maximum allowable
bandwidth for incoming (ingress) and outgoing (egress) traffic flows on a port.

17.1 CIR and PIR

The Committed Information Rate (CIR) is the guaranteed bandwidth for the
incoming traffic flow on a port. The Peak Information Rate (PIR) is the maximum
bandwidth allowed for the incoming traffic flow on a port when there is no network
congestion.
The CIR and PIR should be set for all ports that use the same uplink
the CIR is reached, packets are sent at the rate up to the PIR. When network
congestion occurs, packets through the ingress port exceeding the CIR will be
marked for drop.
Note: The CIR should be less than the PIR, and the sum of CIRs cannot be greater
than or equal to the uplink bandwidth.

17.2 Bandwidth Control

Use this screen to specify the guaranteed bandwidth and maximum bandwidth for
incoming (ingress) traffic on a port and to specify the maximum bandwidth for
MS-7206 User's Guide

Bandwidth Control

17
bandwidth. If
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