Problem Solving
2–17
Figure 2–4 (Cont.): Problem Solving the FDDI Interface
Cable loss
out of spec
?
Detect
any failures
?
Replace failed
module.
Repair/replace
cable.
Verify that you are checking
both ends of the same cable
and have correctly identified
the ring topology.
Calculate cable loss
(Section 2.4.7).
Yes
No
Yes
No
C
If you have not already
done so, replace FI
module and retest.
If failure persists, a
network topology
problem may exist.
Contact your system/
network manager.
Reconnect FI and NI cables
Rx power
OK
?
(Verify Rx power
and cable loss.)
No
Yes
Go to upstream station
and verify its operation.
Reconnect FI and
NI cables.
A
LKG–5118–91I
