Cisco Catalyst 4500 Series Configuration Manual page 1196

trust
Examples The following example shows how to define a port trust state to trust inbound DSCP values for traffic
classified with "class1":
Switch# configure terminal
Switch(config)# policy-map policy1
Switch(config-pmap)# class class1
Switch(config-pmap-c)# trust dscp
Switch(config-pmap-c)# police 1000000 20000 exceed-action policed-dscp-transmit
Switch(config-pmap-c)# exit
Switch#
You can verify your settings by entering the show policy-map privileged EXEC command.
Related Commands Command
class
police
policy-map
set
show policy-map
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release XE 3.9.xE and 15.2(5)Ex
2-1146
Description
Specifies the name of the class whose traffic policy you want to
create or change.
Configures the Traffic Policing feature.
Creates a policy map that can be attached to multiple ports to
specify a service policy and to enter policy-map configuration
mode.
Marks IP traffic by setting a class of service (CoS), a
Differentiated Services Code Point (DSCP), or IP-precedence in
the packet.
Displays information about the policy map.
Chapter 2