User's 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…
110/220 VAC 10BASE-T, AUI, or BNC Ports
CPU card RF card