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Command Reference Guide
qos-policy
Use the qos-policy command to apply a previously configured quality of service (QoS) map to incoming
or outgoing packets on an interface. Use the no form of this command to remove the map from the
interface. Variations of this command include:
qos-policy in <name>
qos-policy out <name>
Syntax Description
<name>
in
out
Default Values
No default values are necessary for this command.
Command History
Release 9.1
Release 15.1
Functional Notes
When a QoS policy is applied to an interface, it may be disabled if the interface bandwidth is not adequate
to support the requested bandwidth on the map set. Once the bandwidth problem is resolved, the map will
work again. The bandwidth will be rechecked on any of the following changes:
1. A priority or class-based entry is added to, deleted from, or changed in a QoS map set.
2. The interface bandwidth is changed by the bandwidth command on the interface.
3. A QoS policy is applied to an interface.
4. A cross connect is created that includes an interface with a QoS policy.
5. The interface queuing method is changed to fair-queue to use weighted fair queuing (WFQ).
6. The interface operational status changes.
7. The interface bandwidth changes for other reasons (e.g., when asymmetric digital subscriber line
(ADSL) finishes training).
In order to prevent the map from being disabled in cases of temporary inadequate bandwidth (e.g., a single
link goes down in a dual T1 multilink configuration where the map requests more than one T1's worth of
bandwidth), the QoS map uses the maximum theoretical bandwidth on an interface, not the actual
bandwidth at that time. This actually helps QoS keep higher priority class-based traffic working better than
best-effort traffic when the bandwidth drops.
60000CRG0-35E
Specifies the name of a previously created QoS map (refer to
<name> <number> on page 1296
Assigns a QoS map to this interface's input.
Assigns a QoS map to this interface's output.
Command was introduced.
Command was expanded to include the in parameter.
Copyright © 2012 ADTRAN, Inc.
HDLC Interface Command Set
for more information).
qos map
2384
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