Problem: Cluster cannot receive application requests

Try the following actions:

Check the log files for correct joining of cluster members.
Verify the firewall settings.
Verify that the time is automatically synchronized within <1 sec between the nodes.
Make sure that the redirector is configured correctly, including its virtual directory authentication settings.
Enable the redirector debug log level. Use a network sniffer (e.g. Wireshark) to identify communication issues.