HP MSR2000/3000/4000 Router Series ACL and QoS Configuration Guide
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Configuring the exponent for WRED to calculate the average queue size
Before configuring the WRED exponent, make sure the queue af or queue wfq command has been
configured and the wred command has been used to enable WRED.
To configure the exponent for WRED to calculate the average queue size:
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Create a traffic behavior and
enter traffic behavior view.
traffic behavior behavior-name
By default, no traffic behavior is
created.
3. Configure the exponent for WRED
to calculate the average queue
size.
wred weighting-constant
exponent
The default setting is 9.
Configuring the lower limit, upper limit, and drop probability denominator for a DSCP value in WRED
To perform this configuration, make sure DSCP-based WRED has been enabled with the wred dscp
command.
Disabling WRED also removes the wred dscp command configuration.
Removing the queue af or queue wfq command configuration also removes the WRED-related
parameters.
To configure the lower limit, upper limit, and drop probability denominator for a DSCP value in WRED:
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Create a traffic behavior and
enter traffic behavior view.
traffic behavior behavior-name
By default, no traffic behavior is
created.
3. Configure the lower limit,
upper limit, and drop
probability denominator for a
DSCP value in WRED.
wred dscp dscp-value low-limit
low-limit high-limit high-limit
[ discard-probability discard-prob ]
By default, low-limit is 10,
high-limit is 30, and discard-prob
is 10.
Repeat this command to configure
more DSCP values.
Configuring the lower limit, upper limit, and drop probability denominator for an IP precedence value
in WRED
To perform this configuration, make sure IP precedence-based WRED has been enabled with the wred
ip-precedence command.
Disabling WRED also removes the wred ip-precedence command configuration.
Removing the queue af or queue wfq command configuration also removes the WRED-related
parameters.
To configure the lower limit, upper limit, and drop probability denominator for an IP precedence value
in WRED:
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A