Specifying Service Policies; About Service Policy Enforcement; Applying Service Policies; About The Dwrr Traffic Scheduler Queue - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Chapter 56 Configuring Fabric Congestion Control and QoS
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m

Specifying Service Policies

To specify a service policy, follow these steps:
Command
Step 1
switch(config)# qos policy-map MyPolicy
switch(config-pmap)#
switch(config)# no qos policy-map OldPolicy
switch(config)#
Step 2
switch(config-pmap)# class MyClass
switch(config-pmap-c)#
switch(config-pmap)# no class OldClass
Step 3
switch(config-pmap-c)# priority high
switch(config-pmap-c)# no priority high
Step 4
switch(config-pmap-c)# dscp 2
switch(config-pmap-c)# no dscp 60

About Service Policy Enforcement

When you have configured a QoS data traffic policy, you must enforce the data traffic configuration by
applying that policy to the required VSAN(s). If you do not apply the policy to a VSAN, the data traffic
configuration is not enforced. You can only apply one policy map to a VSAN.
You can apply the same policy to a range of VSANs.
Note

Applying Service Policies

To apply a service policy, follow these steps:
Command
Step 1
switch(config)# qos service policy MyPolicy
vsan 3
switch(config)# no qos service policy OldPolicy
vsan 7

About the DWRR Traffic Scheduler Queue

The Cisco NX-OS software supports four scheduling queues:
OL-18084-01, Cisco MDS NX-OS Release 4.x
Purpose
Creates a policy map called MyPolicy and places
you in the policy-map submode.
Deletes the policy map called OldPolicy and places
you in the policy-map submode.
Specifies the name of a predefined class and places
you at the policy-map submode for that class.
Removes the class map called OldClass from the
policy map.
Specifies the priority to be given for each frame
matching this class.
Deletes a previously assigned priority and reverts
to the default value of low.
Specifies the DSCP value to mark each frame
matching this class.
Deletes a previously assigned DSCP value and
reverts to the factory default of 0.
Purpose
Applies a configured policy to VSAN 3.
Deletes a configured policy that was applied
to VSAN 7.
Cisco MDS 9000 Family CLI Configuration Guide
QoS
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