Verifying Network Connections

If your subcomponents are still causing problems, confirm that they have established a network connection with the connector. On the machine where the connector is running, verify that the connector is listening for the subcomponent’s connection by running the following command:

# netstat -n -a

For example, the netstat command shows that the connector is listening for incoming connections on port 9999 and the subcomponent has successfully connected as follows:

# netstat -n -a | grep 9999
*.9999
*.*    0   0 65536    0 LISTEN
12.13.1.2.44397 12.13.1.2.9999
73620 0 73620    0 ESTABLISHED
12.13.1.2.9999
12.13.1.2.44397 73620 0 73620
0 ESTABLISHED

However, if the subcomponent has not connected, the netstat command instead shows the following:

# netstat -n -a | grep 9999
*.9999
*.*    0   0 65536    0 LISTEN

After verifying that the subcomponent is running, examine the subcomponent’s local logs for potential problems.

Verify that the correct port number was specified. Verify that the connector is running and is in the READY state. Examine the connector’s local logs for potential problems.

If the connector is not listening for incoming connections, then the output of the netstat command appears as follows:

# netstat -n -a | grep 9999
#