Solving Problems With The Switch - 3Com OfficeConnect 140M User Manual

6-2 C 6: P
HAPTER ROBLEM

Solving Problems With the Switch

Power LED not lit. Check your power adapter
connection. If there is still no power, you may have a
faulty power adapter which needs replacing with
another OfficeConnect power adapter. Do not use
any other power adapter with the switch.
Alert LED remains lit after self-test. Power off the
switch, wait about five seconds and then power on
the switch so that it performs its self-test again. If
the Alert LED still remains lit after self-test, there is a
problem with the switch. Contact your supplier.
Alert LED continually lit during use. Use the Alert
LED page in the web interface to see what condition
is causing it to light, refer to
page 4-12.
If you are trying to view the Alert LED page over the
network but cannot communicate with the switch, it
may be because of a broadcast storm (excessive
amounts of broadcast frames). Try to communicate
through the console port instead.
S
OLVING
"Alert LED" on
If the Alert LED page shows that Broadcast Traffic or
Error Rate conditions are causing the Alert LED the
light, it may be that there is:
A network loop — Each piece of equipment
needs only one connection to your switch.
Excessive amounts of broadcast frames — Some
pieces of network equipment operate by sending
out broadcast frames regularly. Refer to the
documentation that accompanies the piece of
network equipment.
To isolate the port on which the problem is occuring,
remove the port connections one at a time (starting
with the 100BASE-TX port), waiting about a minute
between each port. If the Alert LED goes off, you
have found the port.
If the Alert LED is still lit after removing all of your
connections, there may be a problem with your
switch. Power it off, wait about 5 seconds and then
power it on. If the Alert LED comes back on
continually, contact your supplier.