NS3000/iX Operations and Maintenance Reference Manual (36922-90042)

Chapter 5 69
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.”