You’re now ready to learn how to configure WFQ. For all interfaces having a line speed equal to
or lower than 2.048Mbps (E-1 speed), WFQ is on by default. Here’s an example of how WFQ is
configured on an interface. You can use the
fair-queue
command to alter the default settings:
Router_C#
config t
Enter configuration commands, one per line. End with CNTL/Z.
Router_C(config)#
interface serial0
Router_C(config-if)#
fair-queue 96
Router_C(config-if)#^
Z
Router_C#
To understand what was configured, look at the syntax of the command:
fair-queue
[
congestive-discard-threshold
[
dynamic-queues
[
reservable-queues
]]]
congestive-discard-threshold
This value specifies the number of messages allowed in each
queue. The default is 64 messages, with a range 16–4,096. When a conversation reaches this
threshold, new message packets will be dropped.
dynamic-queues
Dynamic queues are exactly that—queues established dynamically to handle
conversations that don’t have special requirements. The valid values for this parameter are 16,
32, 64, 128, 256, 512, 1024, 2048, and 4096, with the default value being 256; ISDN BRI has
a default of 16.
reservable-queues
This parameter defines the number of queues established to handle special
conversations. The available range is from 0 to 1,000. The default is 0. These queues are for
interfaces that use Resource Reservation Protocol (RSVP).