cdp timer

To specify how often the Cisco IOS software sends CDP updates, use the cdp timer global configuration command. Use the no form of this command to revert to the default setting.

cdp timer seconds

no cdp timer

Syntax Description

seconds

Specifies how often the Cisco IOS software sends CDP updates.

Defaults

60 seconds

Command Modes

Global configuration

Command History
Release Modification

10.3

This command was introduced.

Usage Guidelines

The trade-off with sending more frequent transmissions is providing up-to-date information versus using bandwidth more often.

  Note   The cdp enable, cdp timer, and cdp run commands affect the operation of the IP on demand routing feature (that is, the router odr global configuration command). For more information on the router odr command, see the "On-Demand Routing Commands" chapter in the Network Protocols Command Reference, Part 1.

Examples

In the following example, CDP updates are sent every 80 seconds, less frequently than the default setting of 60 seconds. You might want to make this change if you are concerned about preserving bandwidth.

cdp timer 80

Related Commands
Command Description

cdp holdtime

Specifies the amount of time the receiving device should hold a CDP packet from your router before discarding it.

show cdp

Displays global CDP information, including timer and hold-time information.