If you are having communication problems across the network, review these guidelines.

  • Make sure each network computer can access the other computers across the network.
  • Because the protocol used for network communication between network Shared Variable Engines is based on TCP/IP, make sure each computer has TCP/IP configured correctly on it.
  • Each computer must have a unique IP address and a host name assigned to it. You can use TCP/IP utilities such as ping (all operating systems) and nslookup (Windows XP only) to verify the address and the host name.
Note Execute ping /? from a command prompt to access ping command help. Execute nslookup Enter, then ? at the prompt to access nslookup help.
  • If the network contains a firewall that separates network computers, you must make some adjustments. Refer to the Developer Zone at ni.com/zone for more information about networking across firewalls.
  • Use the Distributed System Manager to monitor communication and determine whether data is accessible through the NI Publish-Subscribe Protocol (NI-PSP) or Logos.

For more information, read the following: