OpenView Network Node Manager: Designing and Implementing an Enterprise Solution

NNM GUI Problems on UNIX Systems

The X-Window system on the user’s UNIX workstation must be properly configured for pain-free operation. A common complaint is that a GUI, usually ovw, cannot connect to the display. This may be caused by an incorrect or unset $DISPLAY variable, insufficient permissions to connect to the display (xhost + fixes this), the name of the display cannot be resolved using the local DNS resolver, or there is no IP route between the NNM system and the workstation running the X-Windows emulator.

An active ovw session may be abruptly terminated because the user’s workstation locked up, the user exited the X-Windows environment ungracefully, or the X-Windows emulator locked up. Sometimes this type of failure is not communicated ...