HP FlexNetwork 6600 Configuration Manual page 64

3. Enable WRED.
Configuring the exponent for WRED to calculate the average queue size
Before configuring the WRED exponent, make sure the queue af command or the 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:
Step
1. Enter system view.
2. Create a traffic behavior and
enter traffic behavior view.
3. Configure the exponent for
WRED to calculate the average
queue size.
Configuring the lower limit, upper limit, and drop probability denominator for each 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:
Step
1. Enter system view.
2. Create a traffic behavior and
enter traffic behavior view.
3. Configure the lower limit,
upper limit and drop
probability denominator for a
DSCP value in WRED.
Configuring the lower limit, upper limit, and drop probability denominator for each 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.
wred [ dscp |
ip-precedence ]
Command
system-view
traffic behavior
behavior-name
wred weighting-constant
exponent
Command
system-view
traffic behavior behavior-name
wred dscp dscp-value low-limit
low-limit high-limit high-limit
[ discard-probability
discard-prob ]
57
•
dscp—Uses the DSCP value for
calculating the drop probability for a
packet.
•
ip-precedence—Uses the IP
precedence value for calculating the drop
probability for a packet. This keyword is
used by default.
Remarks
N/A
The specified traffic behavior
name cannot be the name of any
system-defined behavior.
The default exponent is 9.
Remarks
N/A
The specified traffic behavior
name cannot be the name of any
system-defined behavior.
dscp-value: DSCP value in the
range of 0 to 63, which can also
be any of the following keywords:
ef, af11, af12, af13, af21, af22,
af23, af31, af32, af33, af41, af42,
af43, cs1, cs2, cs3, cs4, cs5,
cs6, cs7, and default.