H3C Technologies H3C S12500 Series Switches - Manual (Page 35)

26
Step Command Remarks
1. Enter system view. system-view N/A
2. Create a traffic behavior and
enter traffic behavior view.
traffic behavior behavior-name N/A
3. Configure actions in the traffic
behavior.
See the subsequent chapters, depending on the purpose of the traffic
behavior: traffic policing, traffic filtering, traffic redirecting, priority
marking, traffic accounting, and so on.
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.
To associate a class with a behavior in a policy:
Step 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 class with a
behavior in the policy.
classifier tcl-name behavior
behavior-name Repeat this step to create more
class-behavior associations.
IMPORTANT:
When an ACL is referenced by a QoS policy for traffic classification, the deny action in an ACL rule means
not to execute the behavior of the corresponding class-behavior association, and the permit action in an
ACL rule means to execute the behavior of the corresponding class-behavior association.
Applying the QoS policy
You can apply a QoS policy to the following destinations:
• An interface—The policy takes effect on the traffic sent or received on the interface.
• A VLAN—The policy takes effect on the traffic sent or received on all ports in the VLAN.
• Globally—The policy takes effect on the traffic sent or received on all ports.
• Control plane—The policy takes effect on the traffic sent on the control plane.
Configuration restrictions and guidelines
• You can apply a QoS policy to the control plane of only an Ethernet interface card.
• You can modify classes, behaviors, and class-behavior associations in a QoS policy even after it is
applied. If a class references an ACL for traffic classification, you can delete or modify the ACL
(such as add rules to, delete rules from, and modify rules of the ACL).
• Global QoS policies, interface QoS policies, and VLAN QoS policies are in the descending order
of priority when being used to match packets.
• Global QoS policies and VLAN QoS policies will be applied to all interface cards. If the hardware
resources of an interface card are insufficient, applying a global or VLAN-based QoS policy will
fail on the interface card. In this case, the system does not automatically roll back the QoS policy