Command Reference Guide

3Com Router 5000 Family and Router 6000 Family queue ef ● 121
Command Reference
queue ef
Purpose Use the queue ef command to configure expedited-forwarding packets to the
absolute priority queue and configure the maximum bandwidth.
Use the
undo queue ef command to cancel the configuration.
Syntax queue ef bandwidth { bandwidth [ cbs committed-burst-size ] | pct
percentage [ cbs_ratio ratio ] }
undo queue ef
Parameters 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.
Example Configure packets to enter priority queue. The maximum bandwidth is 200 kbps and
burst is 5000 bytes by default.
[3Com ] traffic behavior database
[3Com -behavior-database] queue ef bandwidth 200 cbs 5000
View This command can be used in the following views:
■ Traffic Behavior view
Description The command can not be used together with queue af, queue-length, and
wred in traffic behavior view.
In the policy the default class default-class cannot be associated with the traffic
behavior
queue ef belongs to.
■ 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.
■ 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.
■ 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.