QoS Commands 415
Default Configuration
This command has no default configuration.
Command Mode
Global Configuration mode (for all system interfaces)
Interface Configuration  (Ethernet, Port-channel) mode (for a specific interface)
User Guidelines
This command effectively enables DiffServ on an interface. No separate interface 
administrative mode command for DiffServ is available.
Ensure that no attributes within the policy definition exceed the capabilities of the interface. 
When a policy is attached to an interface successfully, any attempt to change the policy 
definition, such that it would result in a violation of the interface capabilities, causes the policy 
change attempt to fail.
Example
The following example shows how to attach a service policy named “DELL” to all interfaces.
console(config)#service-policy DELL
show class-map
Use the show class-map command in Privileged EXEC mode to display all configuration 
information for the specified class.
Syntax
show class-map [
classname
]
•
classname
 — Specifies the valid name of an existing DiffServ class. (Range: 1–31 characters)
Default Configuration
This command has no default configuration.
Command Mode
Privileged EXEC mode
User Guidelines
This command has no user guidelines.