Troubleshooting the Router A-3
Reading the LEDs
Reading the LEDs
The LEDs indicate the current operating condition of the router. By observing the LEDs,
you can note any fault condition that the router is encountering, and then contact your
system administrator or customer service, when necessary.
Figure A-1 shows the location of the LEDs on the front panel of the Cisco 2600 series
routers. Table A-1 describes these LEDs.
Figure A-1 Cisco 2600 Series Front-Panel LEDs
Table A-1 Cisco 2600 Series Front-Panel LEDs
LED Description
Power Indicates the router’s operating status. Goes on when power is
supplied to the router and the router is operational.
RPS OFF—No RPS
1
is attached.
ON—RPS is attached and operational.
Blink—RPS is attached, but has a failure.
1 RPS = Redundant Power System.
Activity OFF—In the Cisco IOS software, but no network activity.
Blink (500 ms ON, 500 ms OFF)—In ROMMON, no errors.
Blink (500 ms ON, 500 ms OFF, 2 sec. between codes)—In
ROMMON, error detected.
Blink (less than 500 ms)—In the Cisco IOS software, the blink
rate reflects the level of activity.
POWER RPS ACTIVITY
H11660
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