H3C S9500 Series Operation Manual page 1046

Operation Manual – QoS
H3C S9500 Series Routing Switches
I. Configuring WRED parameters
The switch provides four sets of default WRED parameters, respectively numbered as
0 to 3. Each set includes 80 parameters, 10 parameters for each of the eight queues.
The ten parameters are green-min-threshold, yellow-min-threshold, red-min-threshold,
green-max-threshold, yellow-max-threshold, red-max-threshold, green-max-prob,
yellow-max-prob, red-max-prob and exponent. Red, yellow and green packets
respectively refer to those with drop precedence levels 2, 1, and 0.
Perform the following configurations in the specified views.
Enter WRED index view (system view)
Restore the default WRED parameters
(system view)
Configure WRED parameters (WRED
index view)
Restore the default WRED parameters
(WRED index)
The command restores the parameters of the specified WRED index as the default
setting. The command restores the WRED parameters related to the queue as the
default setting.
The switch provides four sets of WRED parameters by default.
Caution:
When multicast packets are sent through a certain port output queue, it is necessary to
use the queue command to increase appropriately the length parameter of the
corresponding queue where packets are all dropped to ensure the best effect of the
replication capability of the egress port.
See the corresponding Command Manual for details of the commands.
II. Configuring drop algorithm
Perform the following configurations in Ethernet port view.
To do...
1-19
Chapter 1 QoS Configuration
Use the command...
wred wred-index
undo wred wred-index
queue queue-id green-min-threshold
green-max-threshold green-max-prob
yellow-min-threshold
yellow-max-threshold yellow-max-prob
red-min-threshold red-max-threshold
red-max-prob exponent
undo queue queue-id