NS3000/iX Operations and Maintenance Reference Manual (36922-90039)

Chapter 5 67
Common Network Problems
Nodal Problems
Table 5-1 Nodal Troubleshooting Strategy
Changes Symptom Possible Causes
New installation Console locked or
hung;serious failures.
Software installation invalid.
System abort Configuration incorrect, serious
internal error.
Software changes System abort Configuration incorrect, serious
internal error.
DSCOPY command aborts. NFTCAT.NET.SYS is bad;
incompatible version, or MAKECAT
was not done.
Hardware changes Unable to use NS. For LAN, LAN card not properly
connected to MAU or network cable,
(LOOP, twisted pair) or cable not
properly installed (missing or bad
terminator, twisted pair not
connected to hub). For Fiber
Distributed Data Interface/iX,
either the Media Interface
Connector (MIC) receptacle is not
properly connected to the FDDI
device adapter or the FDDI
concentrator. For NS 3000/iX
Point-to-Point, either the PSI card is
not properly connected to the cable,
or the cable is improperly installed
(missing or bad terminator). Also
check all modem or other
connections. For DTC/X.25 iX
Network Links, the DTC/X.25
Network Access card may not be
properly installed in the DTC.
No changes Unable to use services or a
warning that old services
are being used.
NSCONTROL has been stopped or
network has been shut down, or
NSCONTROL has been issued to limit
the number of active servers.
Cannot connect to remote
system.
See “Line Opening Errors.”