【Firewall】Why the license expires within one month or suddenly expires after activation?

Found the license expired during the firewall test and use, through the dashboard found that the license has expired in the near future.

Troubleshooting (need to check whether the special version for overseas):

• Check the activation time and license expiration date.
• Determine whether the temporary license (due to overseas use for testing the temporary license only one month of use).
• Determine whether to use the domestic domain name to update the feature library (to avoid the domestic node access is unreachable, it is recommended to use the world automatically select the address, check the cookbook)
• Test whether the domain name is reachable (DNS is configured correctly or not).
  

FaultCase:

Because the client is configured with vdom, although the WAN port has been configured in root vdom, but not divided the root into the management vdom, although connectivity is good, but the firewall can not resolve the domain name, and further lead to license failure.

RG-WALL#config global

RG-WALL(global)#config system global

RG-WALL(global)#set management-vdom ‘vdom name of management port’

RG-WALL(global)#end