Bandwidth Control; Chapter 14 Bandwidth Control; Bandwidth Control Overview; What You Can Do - ZyXEL Communications XS3800-28 User Manual

14.1 Bandwidth Control Overview

This chapter shows you how you can cap the maximum bandwidth using the Bandwidth Control screen.
Bandwidth control means defining a maximum allowable bandwidth for incoming and/or out-going
traffic flows on a port.

14.1.1 What You Can Do

Use the Bandwidth Control screen
through the Switch.

14.1.2 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 bandwidth. If 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.
Note: The sum of CIRs cannot be greater than or equal to the uplink bandwidth.

14.2 Bandwidth Control Setup

Click Advanced Application > Bandwidth Control in the navigation panel to bring up the screen as
shown next.

Bandwidth Control

(Section 14.2 on page
XS3800-28 User's Guide
206
C
H A P T E R
206) to limit the bandwidth for traffic going
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