Cisco Nexus 9000 Series Configuration Manual page 24

Sequencing of Egress Traffic Actions
Sequencing of Egress Traffic Actions
The sequencing of QoS actions on egress traffic is as follows:
1. Queuing and scheduling
High Availability Requirements for QoS Features
The Cisco NX-OS QoS software recovers its previous state after a software restart, and it is capable of a
switchover from the active supervisor to the standby supervisor without a loss of state.
Note
For complete information on high availability, see the Cisco Nexus 9000 Series NX-OS High Availability and
Redundancy Guide.
QoS Feature Configuration with MQC
You use MQC to configure QoS features. The MQC configuration commands are shown in the following
table:
Table 2: MQC Configuration Commands
MQC Command
class-map
policy-map
You can modify or delete MQC objects, except system-defined objects, when the objects are not associated
with any interfaces.
After a QoS policy is defined, you can attach the policy map to an interface by using the interface configuration
command shown in the following table:
Table 3: Interface Command to Attach a Policy Map to an Interface
Interface Command
service-policy
QoS Statistics
Statistics are maintained for each policy, class action, and match criteria per interface. You can enable or
disable the collection of statistics, you can display statistics using the show policy-map interface command,
Cisco Nexus 9000 Series NX-OS Quality of Service Configuration Guide, Release 7.x
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Description
Defines a class map that represents a class of traffic.
Defines a policy map that represents a set of policies
to be applied to a set of class maps.
Description
Applies the specified policy map to input or output
packets on the interface.
Overview