R2511-HP MSR Router Series ACL and QoS Configuration Guide(V5)

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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
Removing the queue af or queue wfq command configuration also removes the WRED drop-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
2. Create a traffic behavior and
enter traffic behavior view.
traffic behavior behavior-name
The specified traffic behavior
name cannot be the name of any
system-defined behavior.
3. Configure the lower limit,
upper limit and drop
probability denominator for
an IP precedence value in
WRED.
wred ip-precedence precedence
low-limit low-limit high-limit
high-limit [ discard-probability
discard-prob ]
N/A
Defining a QoS policy
To associate a traffic behavior with a specific class in policy view:
Ste
p
Command Remarks
1. Enter system
view.
system-view N/A
2. Create a policy
and enter
policy view.
qos policy policy-name N/A
3. Associate a
traffic behavior
with a class in
the policy.
classifier classifier-name
behavior behavior-name
classifier-name: Class name. It must be the name of an
existing system-defined or user-defined class.
behavior-name: Name of a behavior. It must be the name
of an existing system-defined or user-defined behavior.
Applying the QoS policy
Use the qos apply policy command to apply a policy to a physical interface or ATM PVC. You can apply
a policy to multiple physical interfaces or ATM PVCs.
Configuration restrictions and guidelines
• You can apply a QoS policy configured with various QoS actions (including remark, car, gts, queue
af, queue ef, queue wfq, wred, and so on) to common physical interfaces and the VT interfaces
used by MP.