Installation and Operation Manual

NCL1100 Installation & Operation Manual
1990/07/21 – 7 –
2-3 LAN Connection
The port for the network interface card includes three interfaces: an AUI connector, a
10BASE-T connector, and a BNC or 10BASE-2 connector. You can only use one port at a
time and this is determined automatically during the boot or start-up process; therefore, you
must connect the LAN before you power up the bridge.
Do not power up the NCL1100 system until you make all the connections. If you power it up
before you make the connections, you may need to power it down, then up again after you
make the connections.
Once you make the proper connections, the system immediately begins building address
tables of nodes located on the local and remote LANs. It uses these tables to filter packets
not destined for the remote LAN, thereby maximizing throughput capability.
NOTE: If you move a node from one side of the NCL1100 connection to the other, you
can power both systems off, then on, so that they can re-establish the table
necessary for the new node location. Alternatively, press the
b key on the
keyboard at each unit, while the NCL1100 system is running, to re-establish the
table necessary for the new node location.
2-4 Normal Operating Messages
During normal operation, the NCL1100 system displays these messages:
• Testing RF Interface Card…
• Testing LAN interface Card…
• Cards Initialized…
2-5 Error Messages
When there are problems, the system displays these error messages:
• Unable to open file The InterBuilding Link.CFG
Cause: The configuration file for IBL.EXE was not present in the current directory
when you started the NCL1100, or the file does not exist.
Cure: Type
dir and the file name at the C> prompt to ensure that the IBL.EXE
and Link.CFG files are present. If the files are not present, use the
WaveRider Communications website at www.waverider.com for
technical support.
• Network Card Error : Loopback test failed
Cause: The NCL1100 could not perform a successful loopback test on the
network card. The failure may be due to an incorrect cable connection,
incorrect cable termination, or a severe network load during the loopback
test.
Cure: Ensure that the LAN cable is connected and terminated properly, then try
again. If the problem persists, disconnect the network card and
terminate it, then try again. If this fails, replace the card.
3 Diagnostics
The NCL1100 has a VGA-compatible output connector on the back of the unit. If you
experience problems with the system, plug a standard VGA-compatible monitor into this
connector to display the diagnostic screens. Once you connect a VGA-compatible monitor to