TROUBLESHOOTING


Checking NRPC connectivity in TCP/IP
IBM® Lotus® Notes® connectivity relies on TCP/IP communication. The first step in troubleshooting TCP/IP is to verify basic TCP/IP configuration and connectivity.

For Notes and IBM® Lotus® Domino® to work properly with TCP/IP, the protocol stack on each computer must already be configured properly. Ensure that the brand and version of the protocol stack is certified for use with this version of Lotus Notes/Domino. For more information, see the protocol service provider's documentation.

Use the PING executable to verify IP-level connectivity. The PING command is available in all Microsoft® Windows® and UNIX® environments.

1. From the server, ping the server itself by numeric IP address.


2. From the server, ping the destination computer (the Notes workstation) by numeric IP address. This indicates if the path to the remote host is clear and whether you can communicate with IP through network routers. If this fails, continue to Step 3.
3. From the workstation, ping the workstation by its own numeric IP address. If this fails, continue to Step 4.

4. Ping the server from the server itself by its DNS fully qualified domain name (FQDN) to verify that it was added to the network correctly; then ping the server from the workstation by FQDN.


5. Ping the server by DNS alias name from the server itself to verify it was added to the network correctly. Then ping the server from the workstation. Ideally the server host alias names all should be the same as the Domino server names. Sometimes the server's FQDN may differ from the Domino server's. That is when the alias name is used, being the same as the Domino server's name.
6. If pinging by numeric address succeeds, but pinging by the alias name fails, the problem's source is in name resolution and not in physical network connectivity. The following table list the commands you use (depending on the operating environment the server or workstation uses) to gather the following information about the system's IP configuration: Related topics