Huawei Quidway S3500 Series Operation Manual page 386

Operation Manual - QoS/ACL
Quidway S3500 Series Ethernet Switches
Before configuring drop algorithm, you need configure the WRED parameters of the
output queues.
I. Configuring WRED
The system provides four default sets of WRED parameters identified by the index
number 0, 1, 2, and 3. Each WRED parameter set specifies 80 parameter values, ten
for each output queue on a port. You may change the WRED parameters represented
by the current WRED index using the queue command described in the following table.
You may use the commands in the following table to configure WRED parameters.
Perform the following configurations beginning with accessing system view.
Table 2-38 Configuring WRED parameters
Access WRED index view from system
view.
Restore the default WRED setting in
system view.
Set WRED parameter values in WRED
index view.
Restore the default WRED setting in
WRED index view.
Exit from WRED index view.
Using the undo wred command, you can restore the default WRED parameter settings
of all the queues in the corresponding conform-level. Using the undo queue command,
you can restore the default WRED parameter settings relevant to a queue.
By default, the system provides four default sets of WRED parameters.
For more information about the commands described in this section, refer to Command
Manual.
II. Configuring the drop algorithm
You may configure drop algorithm using the drop-mode command described in the
following table.
Perform the following configuration in Ethernet interface view.
Operation
Huawei Technologies Proprietary
2-27
Chapter 2 QoS Configuration
Command
wred wred-index
undo wred wred-index
queue queue-id green-min-threshhold
green-max-threshhold
yellow-min-threshhold
yellow-max-threshhold yellow-max-prob
red-min-threshhold
red-max-prob exponent
undo queue queue-id
quit
green-max-prob
red-max-threshhold