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R21xx-HP FlexFabric 11900 ACL and QoS Command Reference

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Views
WRED table view
Predefined user roles
network-admin
Parameters
queue-value: Specifies a queue number in the range of 0 to 7.
drop-level drop-level: Specifies a drop level. This argument is a consideration for dropping packets. The
value 0 corresponds to green packets, the value 1 corresponds to yellow packets, and the value 2
corresponds to red packets. If this argument is not specified, the subsequent configuration takes effect on
the packets in the queue regardless of the drop level.
low limit low-limit: Specifies the lower limit for the average queue length, in the range of 0 to 16383.
high-limit high-limit: Specifies the upper limit for the average queue length. The high-limit argument is in
the range of 0 to 16383 and must be greater than the low-limit argument.
discard-probability discard-prob: Specifies the numerator for drop probability calculation in percentage,
in the range of 0 to 100.
Usage guidelines
When the average queue size is smaller than the lower threshold, no packet is dropped. When the
average queue size is between the lower threshold and the upper threshold, the packets are dropped
based on the user-configured drop probability. When the average queue size exceeds the upper
threshold, subsequent packets are dropped.
Examples
# In global WRED table queue-table1, configure the following drop-related parameters for packets in
queue 1: the drop level is 1, the lower limit for the average queue length is 10, the upper limit for the
average queue length is 20, and the numerator for drop probability calculation is 30.
<Sysname> system-view
[Sysname] qos wred queue table queue-table1
[Sysname-wred-table-queue-table1] queue 1 drop-level 1 low-limit 10 high-limit 20
discard-probability 30
Related commands
• display qos wred table
• qos wred queue table
queue ecn
Use queue ecn to enable ECN for a specified queue.
Use undo queue ecn to restore the default.
Syntax
queue queue-value ecn
undo queue queue-value ecn
Default
ECN is not enabled on any queue.