Command:

cdp holdtime


Mode:

Router(config)#


Syntax:

cdp holdtime seconds 

no cdp holdtime

Syntax Description:

seconds

Specifies the hold time to be sent in the CDP update packets.

Defaults

180 seconds

 

Command Description:

To specify the amount of time the receiving device should hold a Cisco Discovery Protocol (CDP) packet from your router before discarding it, use the cdp holdtime global configuration command. To revert to the default setting, use the no form of this command.

 

CDP packets are sent with a time to live, or hold time, value. The receiving device will discard the CDP information in the CDP packet after the hold time has elapsed.

 

You can set the hold time lower than the default setting of 180 seconds if you want the receiving devices to update their CDP info more rapidly.

The CDP hold time must be set to a higher number of seconds than the time between CDP transmissions, which is set using the cdp timer command.

 


Example:

In the following example, the CDP packets being sent from the router are configured with a hold time of 60 seconds:

Router(config)#cdp holdtime 60


Misconceptions:

           None.


Related Commands:

cdp timer
show cdp

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