Cabletron Systems NB20E User Manual
Page 26
INSTALLING THE NB20E OR NB25E BRIDGE
3-6
The following conditions indicate a problem has been detected with
the bridge:
•
The ON-LINE, STANDBY, PORT 1 OK and PORT 2 OK LEDs
do not start to flash on power up, indicating that the Real Time
Clock has failed.
•
The ON-LINE, STANDBY, PORT 1 OK and PORT 2 OK LEDs
do not stop flashing after power up, indicating that the Network
Interface Chip has not been properly initialized.
•
A PORT OK LED is not lit, indicating that the port failed the
loopback test and that the Network Interface Chip for that port
failed.
If any of these conditions exist, contact Cabletron Systems Technical
Support.
When power connection is complete, use the cable ties that are provided
to strain-relief all cables to the cable support (2, Fig. 3-2) to relieve
unnecessary pressure at cable connection points.
The NB20E or NB25E Bridge is now ready for operation. Before
transmitting data, test the installation. For this procedure, refer to the
section, Chapter 4,
Testing and LANVIEW
.