Configuring Priority - Cisco Nexus 9000 Series Configuration Manual

Configuring Queuing and Scheduling
This example shows how to configure the interface bandwidth:
switch(config)# policy-map type queuing inq
switch(config-pmap-que)# class type queuing c-in-q3
switch(config-pmap-c-que)# bandwidth percent 30
switch(config-pmap-que)# class type queuing c-in-q2
switch(config-pmap-c-que)# bandwidth percent 20
switch(config-pmap-que)# class type queuing c-in-q1
switch(config-pmap-c-que)# bandwidth percent 10
switch(config-pmap-que)# class type queuing c-in-q-default
switch(config-pmap-c-que)# bandwidth percent 40

Configuring Priority

If you do not specify the priority, the system-defined egress pq queues behave as normal queues. For information
on the system-defined type queuing class maps, see the
You can configure only one level of priority on an egress priority queue. You use the system-defined priority
queue class for the type of module to which you want to apply the policy map.
For the nonpriority queues, you can configure how much of the remaining bandwidth to assign to each queue.
By default, the device evenly distributes the remaining bandwidth among the nonpriority queues.
When a priority queue is configured, the other queues can only use the remaining bandwidth in the same
Note
policy map.
Note When configuring priority for one class map queue (SPQ), you need to configure the priority for QoS
group 3. When configuring priority for more than one class map queue, you need to configure the priority
on the higher numbered QoS groups. In addition, the QoS groups need to be adjacent to each other. For
example, if you want to have two SPQs, you have to configure the priority on QoS group 3 and on QoS
group 2.
SUMMARY STEPS
1. configure terminal
2. policy-map type queuing {[match-first] policy-map-name}
3. class type queuing class-name
4. priority [level value]
5. class type queuingclass-name
6. bandwidth remaining percent percent
7. (Optional) Repeat Steps 5 to 6 to assign the remaining bandwidth for the other nonpriority queues.
8. exit
9. show policy-map [type queuing [policy-map-name | default-out-policy]]
10. copy running-config startup-config
Cisco Nexus 9000 Series NX-OS Quality of Service Configuration Guide, Release 7.x
Using Modular QoS CLI section.
Configuring Priority
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