Cisco Nexus 9000 Series Configuration Manual page 157

Configuring Priority Flow Control
SUMMARY STEPS
1. configure terminal
2. class-map type qos class-name
3. match cos cos-value
4. exit
5. policy-map type qos policy-name
6. class type qos class-name
7. set qos-group qos-group-value
8. exit
9. exit
10. class-map type network-qos match-any class-name
11. match qos-group qos-group-value
12. exit
13. policy-map type network-qos policy-name
14. class type network-qos class-name
15. pause buffer-size buffer-size pause-threshold xoff-size resume-threshold xon-size pfc-cos cos-value
16. exit
17. exit
18. system qos
19. service-policy type network-qos policy-name
DETAILED STEPS
Command or Action
Step 1
configure terminal
Example:
switch# configure terminal
switch(config)#
Step 2
class-map type qos class-name
Example:
switch(config)# class-map type qos c1
switch(config-cmap-qos)#
Step 3 match cos cos-value
Example:
switch(config-cmap-qos)# match cos 2
Step 4 exit
Example:
switch(config-cmap-qos)# exit
switch(config)#
Purpose
Enters global configuration mode.
Creates a named object that represents a class of traffic. Class-map
names can contain alphabetic, hyphen, or underscore characters, are
case sensitive, and can be up to 40 characters.
Specifies the CoS value to match for classifying packets into this class.
You can configure a CoS value in the range of 0 to 7.
Exits class-map mode and enters global configuration mode.
Cisco Nexus 9000 Series NX-OS Quality of Service Configuration Guide, Release 7.x
Enabling Priority Flow Control on a Traffic Class
143