License Installation Error CUCM ver 12.5.1

[Prashant Jadhav]

Hey Guys,

Request your support and view on the installation of Cisco CUCM Phone License. I'm trying to register the license but getting an error even thought CUCM is provided with internet. below is error as "Communication Timeout", also have attached the error snapshot. 

Would request your view towards resolution please.

[Jaime Valencia]

What troubleshooting have you done?

What ports and urls have you made sure connectivity is OK for product registration?

[Prashant Jadhav]

Google.com, Cisco.com and tools.cisco.com IP's are able to ping from CUCM CLI. What port / url's are require to open, would you please suggest.

[Roger Kallberg]

Have a look at this document. https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2019/pdf/BRKUCC-2725.pdf

[Prashant Jadhav]

Apologies Roger, but I'm using the Direct Connection where I'm able to ping the Cisco.com.
Gone through the PDF, but still I'm getting an error as Communication timeout.....it seems to be something issue with the network and I'm not able to figure out what exactly is the issue.

[ryandowdy]

Are you using HTTPS for direct connection?

Can't remember what doc I read this is in, but I kept it as a note: "Make sure that you use only HTTPS to communicate with CSSM"

[Scott Leport]

From your CUCM, can you resolve “tools.cisco.com”?

[Prashant Jadhav]

I'm able to ping tools.cisco.com i.e IP # 173.37.145.8. 

[Scott Leport]

Hi,

If you can resolve the tools URL from your CUCM, the issue won't be with CUCM.

As others have suggested, you might want to check Firewall configuration if you haven't done so already, possibly look to get a live trace when you try to kick off a registration request from the CUCM.

Do you have other devices in your Smart Licensing portal you've been able to successfully register? If so, what's different about those devices as opposed to your CUCM?

No doubt you've seen this doc, but I am linking it here for reference:

https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/212915-configure-cucm-smart-licensing-direct.html

Good luck!

[Roger Kallberg]

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@Prashant Jadhav wrote:
Apologies Roger, but I'm using the Direct Connection where I'm able to ping the Cisco.com.
Gone through the PDF, but still I'm getting an error as Communication timeout.....it seems to be something issue with the network and I'm not able to figure out what exactly is the issue.

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The presentation from Cisco Live covers from what I can tell all different options for connection with smart licensing.

[sudaggar]

check if CUCM server IP address range is in firewall SSL decryption rule.

If yes, remove CUCM servers from the firewall SSL decryption rule.

Regards