31-3
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
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, use this command:
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, enter one or more of the following commands:
This example shows how to clear the CDP counter configuration on your switch:
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.
Switch# show cdp entry entry_name
[protocol | version]
Displays information about a specific neighbor. The
display can be limited to protocol or version
information.
Switch# show cdp interface
[type/number]
Displays information about interfaces on which CDP is
enabled.
Switch# show cdp neighbors
[type/number] [detail]
Displays information about neighboring equipment.
The display can be limited to neighbors on a specific
interface and expanded to provide more detailed
information.
Switch# show cdp traffic
Displays CDP counters, including the number of
packets sent and received and checksum errors.
Switch# show debugging
Displays information about the types of debugging that
are enabled for your switch.
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