Solving Problems Indicated By Leds; Managing The Switch - 3Com SuperStack 3 Switch 3300 XM User Manual

34 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 Table 6 which
contains a list of problems and suggested solutions.
Table 6 Problems indicated by LEDs
Problem
A Power LED does not
light
On powering-up, the
Power/Self Test LED
lights yellow and a
Unit LED lights green
A link is connected and
yet the Status LED for
the port does not light
For information about solving problems when managing the Switch, refer
to the Problem Solving chapter in the "SuperStack Switch Management
Guide".
The Switch contains software that allows you to change and monitor the
way it works. This management software is not required to get the
Switch working, but if you do use it, you may improve the efficiency of
the Switch and therefore improve the overall performance of your
network. For information on managing the Switch using the
management software, refer to the "SuperStack Switch Management
Guide".
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.
I
The devices at both ends of the link are powered-up.
I
The connection uses cross-over cable if you are
I
linking a 10BASE-T or 100BASE-TX port with a device
that is MDIX-only.