Defining A Policy; Configuring Qos Policy Nesting - HP A6600 Configuration Manual

Defining a policy

You associate a behavior with a class in a QoS policy to perform the actions defined in the behavior for the
class of packets. A QoS policy can contain multiple class-to-behavior associations, which are matched in the
order they are configured.
The system provides a predefined QoS policy named default. It includes the associations between the
following predefined classes and predefined traffic behaviors:
Class ef with behavior ef.

Classes af1 through af4 with behavior af.

Class default-class with behavior be.

You cannot name a user-defined QoS policy the same as the system-defined QoS policy.
The QoS module ignores ACL match clauses that contain a deny rule. If a deny rule is encountered when
examining an ACL match clause, the QoS module ignores the clause and moves to the next one.
To use a Layer 2 ACL in a QoS policy, do not configure any rule with the lasp keyword in the ACL.
To associate a class with a behavior in a policy:
To do...
1. Enter system view.
2. Create a policy and enter
policy view.
3. Associate a class with a
behavior in the policy.

Configuring QoS policy nesting

Reference a QoS policy in a traffic behavior to reclassify the traffic class associated with the behavior and
take action on the reclassified traffic as defined in the policy. The QoS policy referenced in the traffic
behavior is called the ―child policy‖; the QoS policy that references the behavior is called the ―parent policy.‖
To nest QoS policies successfully, follow these guidelines:
If CBQ is configured in the child policy, configure GTS in the parent policy and ensure that the GTS

bandwidth configured in the parent policy is equal to or greater than the CBQ bandwidth configured
in the child policy.
If GTS bandwidth in the parent policy is configured in percentage, the CBQ bandwidth in the child

policy must be also configured in percentage; if it is configured as an absolute number, the CBQ
bandwidth in the child policy can be configured in either percentage or as an absolute number.
GTS cannot be configured in the child policy.

Command...
system-view
qos policy policy-name
classifier tcl-name behavior
behavior-name
22
Remarks
—
Required.
Required.
Repeat this step to create more
class-behavior associations.