Chapter 26 Configuring Cdp; Disabling And Enabling Cdp - Cisco Catalyst 3120 Software Manual

Chapter 26 Configuring CDP
Command
Step 3 cdp holdtime seconds
Step 4
cdp advertise-v2
Step 5 end
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 CDP characteristics.
Switch# configure terminal
Switch(config)# cdp timer 50
Switch(config)# cdp holdtime 120
Switch(config)# cdp advertise-v2
Switch(config)# end
For additional CDP show commands, see the

Disabling and Enabling CDP

CDP is enabled by default.
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
This example shows how to enable CDP if it has been disabled.
Switch# configure terminal
Switch(config)# cdp run
Switch(config)# end
OL-12247-01
Purpose
(Optional) Specify the amount of time a receiving device should hold the
information sent by your device before discarding it.
The range is 10 to 255 seconds; the default is 180 seconds.
(Optional) Configure CDP to send Version-2 advertisements.
This is the default state.
Return to privileged EXEC mode.
Verify your settings.
(Optional) Save your entries in the configuration file.
"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.
Cisco Catalyst Blade Switch 3120 for HP Software Configuration Guide
Configuring CDP
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