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10
System LEDs and What They Mean
System LEDs indicate the router's operational status.
Table1: System LEDs.
LED
Front panel
Rear panel
Power
PWR
Run
Run
System
SYS
Clear
CLR
Security
SEC
-
ACT
-
ERR
A full description of all AR700 Series router LEDs can be found in the AR
Router Hardware Reference. Descriptions of NSM and PIC LEDs can be found in
their respective Hardware References.
Function
Lit when power is supplied and the router is
switched on.
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.
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 is lit during a power-
up or operator-initiated reboot, and remains lit until
a release has been loaded from flash memory.
On the AR725, AR740, and AR745, this LED will
flash in specific sequences to indicate fan, PSU, or
RPS faults:
1 Flash: A router fan has failed.
2 Flashes: If RPS monitoring is enabled, and an RPS
is connected, the RPS fan has failed.
3 Flashes: If an RPS is connected, the router's PSU
(Power Supply Unit) has failed.
4 Flashes: If RPS monitoring is enabled, the RPS PSU
has failed.
5 Flashes: If RPS monitoring is enabled, an RPS is
not connected or is not operational
Lit when a secure router has enabled PPP interfaces
or Frame Relay circuits that are configured to send
clear text.
Lit when a user is logged in with SECURITY OFFICER
privilege and the router is in SECURITY MODE.
Lit when a Mini Accelerator Card (MAC) or PCI
Accelerator Card (PAC) is installed.
Lit when there is an error in data transmission to or
from a MAC or PAC.
AR700 Series Router
Software Release 2.6.1
C613-04027-01 REV E