3–6
DEC FDDIcontroller/EISA Installation
3.3 Isolating Network Connection Faults
Table 3–2 lists problems that you may encounter when you connect
the controller to a network device, such as a concentrator, through
an FDDI cable.
NOTE
The fault analysis in Table 3–2 assumes both that the
computer was operating properly before you began the
EISA installation process and that the controller self-test
passes with the FDDI cable attached.
Table 3–2:
Isolating Network Connection Faults
Symptom
Probable
Cause
Corrective Action
Controller LED
sequentially
cycles to solid
red (for 50
seconds), then
to solid green
for a period of
time, and then
to solid red
again
(repeatedly).
Faulty cable
between the
controller and
concentrator
(Link Error Rate
threshold
exceeded).
Replace the cable.
If the fault persists, a problem
with either the concentrator port
or the controller is likely.
System is on.
Controller LED
is flashing red.
Invalid topology. Use a valid topology
configuration.
Use the DEClma
Show SMT
command to view the current
connection capabilities.
Refer to the DEClma documenta-
tion for details.
