Cisco Systems 3700 Series manual Reading Front-Panel LEDs

Appendix A Troubleshooting

Reading Front-Panel LEDs

•Router does not boot properly, or constantly or intermittently reboots.

–Make sure that all modules are firmly seated in their slots.

–Check the router chassis or software. See the “Obtaining Technical Assistance” section on page xvii for information about customer service.

•Router boots, but the console screen is frozen.

–Check the external console connection.

–Verify that the parameters for your terminal are set as follows:

(a)The same data rate as configured for the router (9600 baud is the default)

(b)8 data bits

(c)No parity generated or checked

(d)2 stop bits

•Router powers on and boots only when a particular module is removed.

–Check the module. See the “Obtaining Technical Assistance” section on page xvii for information about customer service.

•Router powers on and boots only when a particular cable is disconnected.

–There may be a problem with the module or cable. See the “Obtaining Technical Assistance” section on page xvii for information about customer service.

Reading Front-Panel LEDs

The LEDs on the front panel of the router enable you to determine router performance and operation. Figure A-1and Figure A-2show the LEDs on the front panel of the router. For an explanation of these LEDs see Table A-1and Table A-2.

Figure A-1 Cisco 3725 Router Front-Panel LEDs

ACT LED

SYS/RPS LED

PWR LED

PWR SYS ACT

RPS

Cisco 3700 SERIES

PWR	SYS	ACT
	RPS
		72082

Cisco 3700 Series Routers Hardware Installation Guide

A-4 OL-2180-08