Configuring Dscp Port Marking - Cisco Nexus 9000 Series Configuration Manual

Configuring Marking
This example shows how to configure the CoS class-map configuration:
switch# conf t
switch(config)# policy-map type qos setpol
switch(config-pmap-qos)# class
switch(config-pmap-c-qos)# set qos-group 3
switch(config-pmap-qos)# class
switch(config-pmap-c-qos)# set qos-group 2
switch(config-pmap-qos)# class
switch(config-pmap-c-qos)# set qos-group 1
switch(config-pmap-qos)# class class-default

Configuring DSCP Port Marking

You can set the DSCP value for each class of traffic defined in a specified ingress policy map.
The default behavior of the device is to preserve the DSCP value or to trust DSCP. To make the port untrusted,
change the DSCP value. Unless you configure a QoS policy and attach that policy to specified interfaces, the
DSCP value is preserved.
• You can attach only one policy type qos map to each interface in each direction.
Note
• The DSCP value is trust on the Layer 3 port of a Cisco NX-OS device.
SUMMARY STEPS
1. configure terminal
2. policy-map [type qos] [match-first] [policy-map-name]
3. class [type qos] {class-name | class-default} [insert-before before-class-name]
4. set dscp-value
5. exit
6. class [type qos] {class-name | class-default} [insert-before before-class-name]
7. set dscp-value
8. exit
9. class [type qos] {class-name | class-default} [insert-before before-class-name]
10. set dscp-value
11. exit
12. interface ethernet slot/port
13. service-policy [type qos] {input | output} {policy-map-name} [no-stats]
cos6
cos3
cos1
Cisco Nexus 9000 Series NX-OS Quality of Service Configuration Guide, Release 7.x
Configuring DSCP Port Marking
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