Chapter 22 Configuring Cdp - Cisco Catalyst 3550 series Software Configuration Manual

Chapter 22 Configuring CDP
Command
Step 6 show cdp
Step 7
copy running-config startup-config
Use the no form of the CDP commands to return to the default settings.
This example shows how to configure and verify CDP characteristics.
Switch# configure terminal
Switch(config)# cdp timer 50
Switch(config)# cdp holdtime 120
Switch(config)# cdp advertise-v2
Switch(config)# end
Switch# show cdp
Global CDP information:
For additional CDP show commands, see the
Disabling and Enabling CDP
CDP is enabled by default.
Creating and maintaining switch clusters is based on the regular exchange of CDP messages. Disabling
Note
CDP can interrupt cluster discovery. For more information, see
Beginning in privileged EXEC mode, follow these steps to disable the CDP device discovery capability:
Command
Step 1 configure terminal
Step 2 no cdp run
Step 3
end
Beginning in privileged EXEC mode, follow these steps to enable CDP when it has been disabled:
Command
Step 1
configure terminal
Step 2
cdp run
Step 3 end
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Purpose
Verify configuration by displaying global information about CDP on the
device.
(Optional) Save your entries in the configuration file.
Sending CDP packets every 50 seconds
Sending a holdtime value of 120 seconds
Sending CDPv2 advertisements is enabled
"Monitoring and Maintaining CDP" section on page
Purpose
Enter global configuration mode.
Disable CDP.
Return to privileged EXEC mode.
Purpose
Enter global configuration mode.
Enable CDP after disabling it.
Return to privileged EXEC mode.
Catalyst 3550 Multilayer Switch Software Configuration Guide
Configuring CDP
Chapter 6, "Clustering Switches."
22-5.
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