|
Is the failure symptom that no data traffic can get from one side
of the repeater to the other, or that a hard error such as a beaconing
condition is present on the ring?
 Go
to page 9.1.
 This procedure is generic
as to the repeater manufacturer. For some of the troubleshooting steps
mentioned on this page, you should also reference the repeater manufacturer's
documentation for any special predefined methods for checking repeater
configuration and for repeater testing.
9.1 No data
traffic can get from one side of the repeater to the other, or a hard error
such as a beaconing condition is present on the ring.
If a repeater is the suspected
problem, first attempt to troubleshoot the problem by testing the main
ring path cabling section that normally passes through the repeater. Do
this by disconnecting the attached cable sections and relooping the cabling
sections at the repeater entry points with patch cables. With fiber optic
cabling, this may be more difficult. Bypass the repeater and test the main
ring path cabling segments with a Time Domain Reflectometer (or Optical
TDR in the case of fiber).
With the repeater disconnected, did testing the cable produce any
cable faults?
Most likely a problem exists with
the main ring path cabling. If you a re not sure what portion of the main
ring path section is bad, go to page 3.
If you are sure as to which portion of the main ring cabling path section
is bad, replace that section. Then reattach the repeater and retest the
ring. If the failure symptom is gone, record the problem in the network
maintenance and service log. If the problem still exists after retesting,
go to the next step.
 Attempt to run any available repeater
diagnostics.
Did running the diagnostics produce any errors that identify a repeater
failure?
Take the necessary action to resolve
the problem and retest the repeater for proper operation. If the failure
symptom is gone, record the problem in the network maintenance and service
log. If the problem still exists after retesting, go to the next step .
Thoroughly check the repeater configuration.
Are any incorrect configuration parameters present in the repeater?
Take the necessary action to resolve
the problem and retest the repeater for proper operation. If the failure
symptom is gone, record the problem in the network maintenance and service
log. If the problem still exists after retesting, go to the next step .
Check the actual physical placement
of the repeater with respect to its specification for distance requirements
within the Token Ring cabling system.
Sometimes the physical placement
of a repeater can cause failure symptoms that point to the main ring path
cabling being at fault. Consult the repeater manufacturer for instructions
as to distance requirements.
Is the repeater incorrectly placed as to its specifications?
Take the necessary action to resolve
the problem and retest the repeater for proper operation. If the failure
symptom is gone, record the problem in the network maintenance and service
log. If the problem still exists after retesting, go to the next step .
A problem may still exist with
the repeater, but to get more conclusive fault-isolation data, go to page
15.
If after using this procedure
you cannot conclusively locate the problem and continue to find failure
symptoms that point to a repeater problem, reference the manufacturer's
instructions.
November 15, 1996
|