queue
Use queue to configure the drop-related parameters for a queue in the queue-based WRED table.
Use undo queue to restore the default.
Syntax
queue queue-id [ drop-level drop-level ] low-limit low-limit high-limit high-limit [ discard-probability discard-prob ]
undo queue { queue-id | all }
Default
After a WRED table is created, the lower limit is 100, the upper limit is 1000, and the drop probability is 10%.
Views
WRED table view
Predefined user roles
network-admin
Parameters
queue-id: Specifies a queue by its ID 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 you do not specify a drop level, 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 16000.
high-limit high-limit: Specifies the upper limit for the average queue length. The high-limit argument is in the range of 0 to 16000 and must be greater than the low-limit argument.
discard-probability discard-prob: Specifies the drop probability in percentage, in the range of 0 to 100.
Usage guidelines
When the average queue size is smaller than the lower limit, no packet is dropped. When the average queue size is between the lower limit and the upper limit, packets are dropped based on the user-configured drop probability. When the average queue size exceeds the upper limit, subsequent packets are dropped.
Examples
# In queue-based WRED table queue-table1, configure drop-related parameters for packets in queue 1 as follows:
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.
The drop probability 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 table