Error while configuring License in ArcGIS Administrator

[KRISHNA_CHAITANYATATA]

I have ESRI licenses on server. And i am trying to access the licenses from client machine. But When i give 27000@10.3.47.103, i am getting error "27000@10.3.47.103" does not have a valid license manager. Please enter valid license manager. 

27000 port is opened on firewall. And i am able to do Telnet to that server using 27000 port. And also added 27000 port in service.txt, but still this error is coming.

Anyone please help on this.

[JayantaPoddar]

For the License Manager to use a fixed Port, see the steps in Configure ArcGIS License Manager to work through a firewall. Define any port from 27001-27009. I usually avoid 27000. Ensure the License Manager is running. Pass the port through Firewall.

In the client machine, In ArcGIS Administrator, just assign the Port@IP address as you did earlier. I assume that the IP address is static.

[KRISHNA_CHAITANYATATA]

Thank you Jayanta. I will try with different port.