XS3900-48F User’s Guide
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Bandwidth Control
This chapter shows you how you can cap the maximum bandwidth using the Bandwidth Control
screen.
12.1 Bandwidth Control Overview
Bandwidth control means defining a maximum allowable bandwidth for incoming and/or out-going
traffic flows on a port.
12.1.1 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.
Note: The CIR should be less than the PIR.
Note: The sum of CIRs cannot be greater than or equal to the uplink bandwidth.
Summary of Contents for XS-3900-48F
Page 15: ...15 PART I User s Guide ...
Page 16: ...16 ...
Page 48: ...Chapter 2 Tutorials XS3900 48F User s Guide 48 ...
Page 62: ...Chapter 4 The Web Configurator XS3900 48F User s Guide 62 ...
Page 63: ...63 PART II Technical Reference ...
Page 64: ...64 ...
Page 227: ...Chapter 26 VLAN Mapping XS3900 48F User s Guide 227 ...
Page 320: ...Appendix A Common Services XS3900 48F User s Guide 320 ...
Page 332: ...Index XS3900 48F User s Guide 332 ...