Allied Telesis AR300 SERIES ROUTER - Manual (Page 7)

Quick Install Guide 7
C613-04026-01 REVD
LEDs and What They Mean
System LEDs on its front panel indicate the router’s operational status.
Table1: System LEDs
LED Function
System (red) This LED is not normally lit. It is used to signal various system
conditions (e.g., when the processor executes the reboot
sequence). Generally it signals a possible fault condition, but
it will light briefly during power-up and operator initiated
reboots.
Run Lit when the internal processor is executing code. If the
processor stops for any reason (a fault condition), then the
LED will not be lit.
Power Lit when power is supplied and the router is switched on.
Table 2: Port LEDS (Not all routers have all LEDs).
LED Function
ISDN Active Lit when the BRI has successfully completed the exchange of INFO 1 and
INFO 2 signals, and INFO 3 and INFO 4 signals are present on the link.
This means that the ISDN interface is correctly connected to a working
NT device.
ISDN B1 Lit when data or voice calls are being transmitted over the B1 channel
of the ISDN interface.
ISDN B2 Lit when data or voice calls are being transmitted over the B2 channel
of the ISDN interface.
LAN Coll (yellow) Lit when a collision is detected on the Ethernet interface.
LAN Data 0 Lit when data is being transmitted over the Ethernet 0 interface.
LAN Data 1 Lit when data is being transmitted over the Ethernet 1 interface.
LAN Link Lit when the Ethernet interface is connected to a device (e.g., a hub),
which is generating link pulses. This LED is normally lit.
LAN Link 0 Lit when the Ethernet 0 interface is connected to a device (e.g., a hub),
which is generating link pulses. This LED is normally lit.
LAN Rxd Lit when data is being received on the Ethernet interface.
LAN Txd Lit when data is being transmitted over the Ethernet interface.
LAN Link 1 Lit when the Ethernet 1 interface is connected to a device (e.g., a hub),
which is generating link pulses. This LED is normally lit.
WAN Active Lit when a higher layer module (e.g., PPP) has attached to the interface
and DCD or its analog (“I” for X.21) is active. This usually indicates that
the NTU or DSU/CSU is connected to a correctly provisioned data circuit.
WAN ISDN Lit when data is being transmitted or received over the ISDN interface.
WAN Rxd Lit when data is being received over the synchronous interface.
WAN Syn Lit when data is being transmitted or received over the synchronous
interface.
WAN Txd Lit when data is being transmitted over the synchronous interface.