Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide
Chapter 2 Congestion Management Configuration
Commands
3Com Corporation
2-43
When associating the class with the queue af behavior in the policy, the following must
be satisfied.
z The sum of the bandwidth specified for the classes in the same policy to assured
forwarding (queue af) and expedited forwarding (queue ef) must be less than or
equal to the available bandwidth of the interface where the policy is applied.
z The sum of percentages of the bandwidth specified for the classes in the same
policy to assured forwarding (queue af) and expedited forwarding (queue ef) must
be less than or equal to 100.
z The bandwidth configuration for the classes in the same policy to assured
forwarding (queue af) and expedited forwarding (queue ef) must adopt the value of
the same type. For example, they all adopt the absolute value form or the
percentage form.
Related command: qos policy, traffic behavior, and classifier behavior.
Example
# Configure traffic behavior named database and configure the minimum bandwidth of
the traffic behavior to 200 kbps.
[3Com ] traffic behavior database
[3Com -behavior-database] queue af bandwidth 200
2.5.30 queue ef
Syntax
queue ef bandwidth { bandwidth [ cbs committed-burst-size ] | pct percentage
[ cbs_ratio ratio ] }
undo queue ef
View
Traffic behavior view
Parameter
bandwidth: Bandwidth in Kbps, in the range of 8 to 1000000.
percentage: Percentage of available bandwidth, in the range of 1 to 100.
committed-burst-size: Specifies the committed burst size in bytes, in the range of 32 to
2000000, By default, burst is bandwidth*25.
ratio: Committed burst percentage, in the range 25 to 500.
Description
Use the queue ef command to configure expedited-forwarding packets to the absolute
priority queue and configure the maximum bandwidth.