HP 5400ZL User Manual

Page 297

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Quality of Service: Managing Bandwidth More Effectively

Advanced Classifier-Based QoS

4. (Optional) To configure a default class in a policy, enter the

default-class

command at the end of a policy configuration and specify one or more
QoS actions to be executed on packets that are not matched and not
ignored.

Context: Policy configuration

Syntax:

[no] default-class action <qos-action > [action <qos-action > ...]

Configures a default class that allows one or more QoS
actions to be executed on packets that are not matched or
ignored by any of the class configurations in a QoS policy.

The default-class supports the same QoS commands as the
class < ipv4 | ipv6 > action command: rate-limit, priority, ip­
precedence
, and dscp.

For general information about how to configure and manage a service
policy, refer to the “Creating a Service Policy” section in the “Classifier-
Based Software Configuration” chapter.

5. Apply the QoS policy to inbound traffic on a port (

interface service-policy

in command) or VLAN (vlan service-policy in command) interface.

The following restrictions apply to a QoS service policy:

Only one QoS policy is supported on a port or VLAN interface.

If you apply a QoS policy to a port or VLAN interface on which a QoS
policy is already configured, an error message is displayed. The new policy
does not overwrite the existing one. To apply a new policy, you must first
remove the existing policy with the

no policy command.

A QoS policy is supported only on inbound traffic.

Because only one QoS policy is supported on a port or VLAN interface, ensure
that the policy you want to apply contains all the required classes and actions
for your configuration.

To apply a QoS policy on a port or VLAN interface, enter one of the following
commands from the global configuration context.

Context: Global configuration

Syntax:

interface <port-list > service-policy <policy-name > in

Configures the specified port(s) with a QoS policy that is
applied to inbound traffic on each interface. Separate
individual port numbers in a series with a comma; for
example,

a1, b4, d3. Enter a range of ports by using a dash;

for example,

a1-a5. The QoS policy name you enter must be

the same as the policy name you configured with the

policy

qos command in Step 2.

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