Qos Wred Dscp - H3C MSR 20-20 Command Reference Manual

Related commands:
Examples

qos wred dscp

Syntax
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Parameters
Description
Related commands:
Examples
By default, the dropping method of a queue is tail drop.
qos wfq, display qos wred interface.
# Enable WRED on Ethernet 1/0, using IP precedence for calculating the drop
probability.
<Sysname> system-view
[Sysname] interface ethernet1/0
[Sysname-Ethernet1/0] qos wfq queue-length 100 queue-number 512
[Sysname-Ethernet1/0] qos wred ip-precedence enable
qos wred dscp dscp-value low-limit low-limit high-limit high-limit
discard-probability discard-prob
undo qos wred dscp dscp-value
Interface view
dscp-value: DSCP value, in the range of 0 to 63. This argument can also be a
keyword listed in Table 479.
low-limit low-limit: Specifies the lower threshold, in the range 1 to 1024 (in terms
of the number of packets). The system default is 10.
high-limit high-limit: Specifies the upper threshold, in the range 1 to 1024 (in
terms of the number of packets). The system default is 30.
discard-probability discard-prob: Specifies the denominator for drop probability,
in the range 1 to 255. The system default is 10.
Use the
qos wred dscp
threshold, and drop probability denominator for a specific DSCP value.
Use the undo qos wred dscp
Before performing this configuration, make sure that the qos wred dscp enable
command is used to apply DSCP-based WRED to the interface. The thresholds limit
the average queue length.
qos wred enable, display qos wred interface.
# Configure the following parameters for packets with the DSCP value 63: lower
threshold 20, higher threshold 40, and drop probability denominator 15.
<Sysname> system-view
[Sysname] interface ethernet 1/0
[Sysname-Ethernet1/0] qos wfq queue-length 100 queue-number 512
[Sysname-Ethernet1/0] qos wred dscp enable
command to set the lower threshold, the higher
command to restore the default.
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