Sagem 4450E - Manual (Page 193)

SAGEM 3P@C
3P@C Installation Manual
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A. Diagnosis of Common Faults
Fault symptom Fault cause Solution
All the indicators
are off after power-
on. Power connection is
wrong or power supply is
abnormal. Check the power cable and the
socket.
LINK indicator is
off. Network cable is
damaged or loosely
connected.
The type of network cable
is wrong or the network
cable is too long, whose
length exceeds the
permitted range. Replace the network cable.
LINK indicator
flashes The wiring of the network
cable does not conform to
the standards.
The network cable is too
long and its length
exceeds permitted range. Replace the network cable or re-
make network cables.
The ACT indicator
flashes quickly and
the network is
blocked. The wiring of the network
cable does not conform to
the standards. Replace the network cables or re-
make them.
The network can
be pinged, but the
transmission rate
slows down and
packet loss
occurs. The working mode of the
switch does not match
that of the Ethernet port
at the network terminal. Configure the working mode of the
Ethernet ports so that it matches
the switch or set it in the adaptive
working mode.
The network can
be pinged at a
certain port, but
not when the
network cable is
changed to
another port. If the equipment
connected to the port
does not send data after
the network cable is
changed to another
network port, the switch
will not be able to learn
the new address,
therefore this port will be
blocked temporarily. In about dozens of seconds, the
address table of the switch will be
updated, and this phenomenon will
automatically disappear. Or
sending data from this port will
also make the switch update its
address table immediately.
All ACT indicators
are flashing and
the network rate
slows down. Broadcast storm. 1.Check if there is loop on the
network and properly configure the
network.
2. Check if any site is sending a
large amount of broadcast
packets.
It stops working
after a period of
normal work. The power supply works
abnormally.
It is overheated. 1. Check if the power supply is
properly connected and the
voltage is too low or too high.
2. Check the surroundings and see
if the vent is empty and the fans of
the switch operate normally.
The system cannot
be accessed
through Telnet The network connection
is incorrect.
The IP address is not
configured. Check the network connection.
Access the system via the serial
port and configure the IP address
properly.