Cisco Catalyst 4500 Series - Enabling CDP Globally

31-2
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 31 Configuring CDP
Configuring CDP
• Displaying the CDP Interface Configuration, page 31-3
• Monitoring and Maintaining CDP, page 31-3
Enabling CDP Globally
To enable CDP globally, use this command:
This example shows how to enable CDP globally:
Switch(config)# cdp run
Displaying the CDP Global Configuration
To display the CDP configuration, use this command:
This example shows how to display the CDP configuration:
Switch# show cdp
Global CDP information:
Sending CDP packets every 120 seconds
Sending a holdtime value of 180 seconds
Sending CDPv2 advertisements is enabled
Switch#
For additional CDP show commands, see the “Monitoring and Maintaining CDP” section on page 31-3.
Enabling CDP on an Interface
To enable CDP on an interface, use this command:
This example shows how to enable CDP on Fast Ethernet interface 5/1:
Switch(config)# interface fastethernet 5/1
Switch(config-if)# cdp enable
Command Purpose
Switch(config)# [no] cdp run
Enables CDP globally.
Use the no keyword to disable CDP globally.
Command Purpose
Switch# show cdp
Displays global CDP information.
Command Purpose
Switch(config-if)# [no] cdp enable
Enables CDP on an interface.
Use the no keyword to disable CDP on an interface.