Solving Problems Indicated By Leds; Managing The Switch - 3Com SuperStack 3 Switch 4300 Getting Started Manual

24 C 2: I
HAPTER NSTALLING THE
Solving Problems
Indicated by LEDs
Managing the
Switch
S
WITCH
If the LEDs on the Switch indicate a problem, refer to
contains a list of problems and suggested solutions.
Table 8 Problems Indicated by LEDs
Problem
The Power LED does
not light
On powering-up, the
POST LED lights
yellow.
A link is connected and
yet the Status LED for
the port does not light
Your Switch can operate in its default state. However, to make full use of
the features offered by the Switch, and to change and monitor the way it
works, you have to access the management software that resides on the
Switch. This is known as managing the Switch.
Managing the Switch can help you to improve the efficiency of the
Switch and therefore the overall performance of your network.
There are several different methods of accessing the management
software to manage a Switch. These methods are explained in
Even if you do not intend to actively manage the switch, 3Com
recommends that you change the password to prevent unauthorized
access to your network. See
for more information.
Suggested Solution
Check that the power cable is firmly connected to the
relevant Switch unit and to the supply outlet. If the
connection is secure and there is still no power, you may
have a faulty power cord.
The relevant Switch unit has failed its Power On Self Test
(POST) because of an internal problem. Contact your
supplier for advice.
Check that:
All connections are secure.
The devices at both ends of the link are powered-up.
The quality of cable is satisfactory.
"Logging in as a Default
Table 8, which
Chapter 3.
User"on page 31