Using Wfq Or Modifying Wfq Parameters; Displaying And Debugging Wfq - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide

3.5.1 Using WFQ or Modifying WFQ Parameters

WFQ classifies packets based on traffic. For IP networks, packets belong to the same
stream if they have the same quintuple (source IP address, destination IP address,
source port, destination port, and IP protocol) and IP precedence/DSCP value.
Usually, on access networks, traffic classification involves IP precedence and IP
quintuple, while on distribution networks, DSCP and IP quintuple. You can select as
needed.
In case there is no WFQ employed on the interface, this command can be used to
employ WFQ and designate the parameter for WFQ, otherwise, this command can be
used to modify the parameters of WFQ.
Perform the following configuration in interface view.
Table 3-17 Use WFQ or modify WFQ parameters
Use WFQ or modify WFQ parameters
Remove WFQ setting
FIFO instead of WFQ is employed on the interface by default.
Caution:
Except for interfaces encapsulated with X.25 or LAPB, all physical interfaces can use
WFQ.
You can apply WFQ to a dialer interface. Before that, make sure the queuing
configuration on its physical interfaces is the default.
In addition, if these physical interfaces have had connections with their respective
connected devices, the applied queuing configuration cannot update to them
immediately. Instead, the configuration updates to the physical interfaces the next time
they set up connections.

3.5.2 Displaying and Debugging WFQ

After the above configuration, execute the display command in any view to display the
running of the configuration and statistics information of WFQ on one or interfaces, and
to verify the effect of the configuration.
Operation
3Com Corporation
3-16
Chapter 3 Congestion Management
Command
qos wfq [ precedence | dscp ]
[ queue-length
[ queue-number total-queue-number ] ]
undo qos wfq
max-queue-length