Cisco 4500M User Manual

20-3
Software Configuration Guide—Release 12.2(25)EW
OL-6696-01
Chapter 20 Understanding and Configuring CDP
Configuring CDP
Enabling CDP on an Interface
To enable CDP on an interface, perform this task:
This example shows how to enable CDP on Fast Ethernet interface 5/1:
Switch(config)# interface fastethernet 5/1
Switch(config-if)# cdp enable
This example shows how to disable CDP on Fast Ethernet interface 5/1:
Switch(config)# interface fastethernet 5/1
Switch(config-if)# no cdp enable
Displaying the CDP Interface Configuration
To display the CDP configuration for an interface, perform this task:
This example shows how to display the CDP configuration of Fast Ethernet interface 5/1:
Switch# show cdp interface fastethernet 5/1
FastEthernet5/1 is up, line protocol is up
Encapsulation ARPA
Sending CDP packets every 120 seconds
Holdtime is 180 seconds
Switch#
Monitoring and Maintaining CDP
To monitor and maintain CDP on your device, perform one or more of these tasks:
Command Purpose
Switch(config-if)# [no] cdp enable
Enables CDP on an interface.
Use the no keyword to disable CDP on an interface.
Command Purpose
Switch# show cdp interface [ type / number ]
Displays information about interfaces where CDP is
enabled.
Command Purpose
Switch# clear cdp counters
Resets the traffic counters to zero.
Switch# clear cdp table
Deletes the CDP table of information about neighbors.
Switch# show cdp
Displays global information such as frequency of
transmissions and the holdtime for packets being
transmitted.

Cisco 4500M Specifications

General

Brand	Cisco
Model	4500M
Category	Network Router
Language	English