Clear CDP - MS225

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DavidCo
Conversationalist

Clear CDP - MS225

I am trying to update my CDP listing within my environment.  Several older Cisco APs were connected but have been removed over 12 hours ago and they are still showing in CDP, I also have a couple of HP Procurve switches that have been removed from the network that are still showing in CDP.

 

Is there a way to for CDP to clear?

 

Thank you

1 Accepted Solution
DavidCo
Conversationalist

AN update.  The CDP/LLDP seems to have cleared, but it took a full weekend to do so.  so maybe the refresh window is 48 hours.  

 

Thank you everyone for your suggestions.

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5 Replies 5
NolanHerring
Kind of a big deal

Usually clears out on its own, though I've never timed it to see how long it takes. I would imagine it would be 12 or 24 hours. Or if you plug something else it, it will override.

I don't know of any method to clear that info though.
Nolan Herring | nolanwifi.com
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redsector
Head in the Cloud

Did you test to shut the ports for about 15minutes? On Cisco "classic" products the arp timeout is standard on 900seconds =15 minutes.

DavidCo
Conversationalist

I have not, thank you for the thought, but of course everything is in production now.  

Nash
Kind of a big deal

I've seen it clear within a couple of hours on its own, but I was using a two hour time window. Double check your time window. It can be up to a month.

 

LLDP and CDP info is sent to the dashboard every ten minutes.

 

N.B. I do primarily interact with CDP via the API, because I'm often needing it for all devices in a network including the MX. You have to explicitly declare a range in seconds of less than one month there.

 

You can do a quick test of what the API endpoint sees in Postman. You'll need to:

1. "List organizations that the user has privileges on",
2. Make an "organizationId" variable and populate it with the org id.
3. "List the networks in an organization.

4. Make a "networkId" variable and populate it.

5. Make a "serial" variable and put your device's serial number into it.
6. Then use Device/"List LLDP and CDP information for a device".

DavidCo
Conversationalist

AN update.  The CDP/LLDP seems to have cleared, but it took a full weekend to do so.  so maybe the refresh window is 48 hours.  

 

Thank you everyone for your suggestions.

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