IBM 8239 Token-Ring Stackable Hub, Руководство по установке и эксплуатации

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Table 5-8 (Page 4 of 4). Stack-In Status
Green
(Data In) Yellow
(DI/CI
Status) Green
(Control In) Meaning
Blinking On Off No fault on Data In, but Data In has been wrapped by system
administrator. Fault detected in Control In and Control In is
wrapped.
Cause Action
Stack cable connected to incorrect port
Make sure that Stack In
connects to Stack Out.
Cable problem Make sure all cable
connections are secure. Check
the cable for breaks or other
damage. Make sure the cable
length and specifications
comply with the requirements
in “Cable Types and
Distances” on page 1-4.
Replace suspect cables with
known good cables. Allow one
minute after each replacement
for problem to clear.
Hardware failure Isolate the faulty 8239 and
replace it.
Stack-Out Status
Table 5-9 (Page 1 of 4). Stack-Out Status
Green
(Data Out) Yellow
(DO/CO
Status) Green
(Control
Out) Meaning
On Off On Normal: Data Out is unwrapped; Control Out is unwrapped.
Blinking Off On No faults detected; Data Out has been wrapped by system
administrator.
Action: If required, use UNWRAP DATA_IO.
On Off Blinking No faults detected. Control Out has been wrapped by system
administrator.
Action: If required, use UNWRAP CONTROL_IO.
Blinking Off Blinking No faults detected. Data Out and Control Out have both been
wrapped by the system administrator.
Action: If required, use UNWRAP DATA_IO and UNWRAP
CONTROL_IO.
Chapter 5. Problem Determination Procedures
5-11