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Configuring HQoS
HQoS overview
Hierarchical Quality of Service (QoS) uniformly manages traffic and hierarchically schedules traffic
by user, network service, and application. It provides more granular traffic control and quality
assurance services than traditional QoS.
HQoS-capable devices can hierarchically classify and schedule traffic, for example, by both user and
application. HQoS guarantees QoS for advanced users and saves the overall networking costs.
HQoS implementation methods
On 6600/HSR6600 routers, you can implement HQoS by nesting QoS policies or applying
hierarchical CAR policies to an interface.
Implementing HQoS through nesting QoS policies
Implement HQoS though nesting QoS policies as follows:
•
Configure traffic classes to identify different types of packets.
•
Configure traffic behaviors with the corresponding actions to be performed for different classes
of packets.
•
Associate classes with behaviors in a QoS policy, and apply the QoS policy, typically, to an
interface.
When packets pass an interface with the QoS policy applied, packets are classified into multiple
classes according to the match criteria, and the actions in the corresponding behaviors are
performed for these classes of packets.
You can reference a QoS policy in a traffic behavior to re-classify the traffic class associated with the
behavior and take action on the re-classified traffic as defined in the policy. The QoS policy
referenced in the traffic behavior is called the "child QoS policy"; the QoS policy that references the
behavior is called the "parent QoS policy".
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