Configuring Priority - Cisco Nexus 9000 Series Configuration Manual

Configuring Priority

Command or Action
switch(config-pmap-c-que)# show policy-map type
queuing shape_queues
Step 8
copy running-config startup-config
Example:
switch(config)# copy running-config
startup-config
Example
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 "Using Modular QoS CLI" section.
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.
Note
When a priority queue is configured, the other queues can only use the remaining bandwidth in the same
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.
2.
Cisco Nexus 9000 Series NX-OS Quality of Service Configuration Guide, Release 7.x
122
configure terminal
policy-map type queuing {[match-first] policy-map-name}
Configuring Queuing and Scheduling
Purpose
(Optional) Saves the running configuration to the startup
configuration.