Allied Telesis AT-3714FXL - Manual (Page 34)

Troubleshooting
3-4
How the Switch Reports Problems
The switch detects and processes errors as follows:
# The LEDs indicate problems with the port and power. Table
3-1 list and describes the switch LEDs.
# In a TCP/IP environment, if you have configured the software
correctly, the management software triggers an SNMP trap
message. As a result, the software then sends traps to alert the
network manager when a trigger occurs. This type of software
configuring allows the network administrator/manager to
pro-actively monitor their network.
Table 3-1 LEDs
LED Color State Description
Power
(system) Green On The switch is receiving power, voltage is within the
acceptable range, and the power supply is working.
Note: if only the management software is malfunctioning,
the switch continues to forward packets.
Off No power.
Fault
(system) Red On The switch or management software is malfunctioning.
Off Normal operation.
Flashing Running diagnostics.
Link Green On There is a physical link with a device.
Off No link.
Activity Green Flashing
or On The Ethernet port is receiving/transmitting packets.
Off No transmits or receives occurring on this port.