ZyXEL MI-7248 User Guide - Page 107

Bandwidth Control

Page 107 highlights

CHAPTER 17 Bandwidth Control 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 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. " 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 outgoing (egress) traffic on a port. To open this screen, click Advanced Application > Bandwidth Control. MS-7206 User's Guide 107

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MS-7206 User’s Guide
107
C
HAPTER
17
Bandwidth Control
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 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.
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 outgoing (egress) traffic
on a port. To open this screen, click
Advanced Application > Bandwidth Control
.