Isolating A Problem - 3Com OfficeConnect 3C16710 User Manual

16710.bk : PROBSOLV.FRM Page 1 Tuesday, October 7, 1997 11:38 AM
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P
R O B L E M
The Office Connect® Hub 8/T PM has been designed
to aid you when detecting and solving possible
problems with your network. These problems are
rarely serious, the cause is usually a disconnected or
damaged cable, or incorrect configuration. If this
chapter does not solve your problem, contact your
supplier for information on what to do next.
Perform these actions first:
Ensure all equipment is powered on.
Power each hub off, wait about 5 seconds and then
power them on so they perform a self-test. The
self-test only takes a few seconds, during which all
LEDs light. Port Status LEDs light yellow.
S
O L V I N G

Isolating a Problem

A good way of isolating a problem is to see whether
it occurs on a particular port only. This can be done
by:
Using a different port to see if the problem still exists.
Using management to view how a port has been set
up. In particular, see if the port is:
Partitioned because of a network loop
Disabled by management
Part of a resilient link pair
Performing security
Check the Alert LED and if lit, use the Alerts dialog
box in Quick Config Manager to see what condition
is causing it to light.