Cisco Systems Cisco 3600 manual Front-Panel LEDs on Cisco 3631 Routers, Led

Appendix A Troubleshooting

Reading Front-Panel LEDs

Note Your router’s front or rear panel shows ACTIVE slot# and READY slot# LEDs corresponding to the number of network module slots in the router. (See Table A-4.)

The Cisco 3620 router has two slots numbered 0 and 1; the Cisco 3640 router has four slots numbered 0, 1, 2, and 3; and the Cisco 3660 router has six slots numbered 1, 2, 3, 4, 5, and 6.

Note The Cisco 3660 router has PCMCIA slots located on its rear panel. (See Figure A-6.)

Table A-4 ACTIVE, READY, and PCMCIA LEDs in Cisco 3620, Cisco 3640, and Cisco 3660 Routers

LED	Description
ACTIVE 0, 1, 2, 3, 4, 5, 6	Blinks to indicate network activity on the module installed in the indicated
	slot.
READY 0, 1, 2, 3, 4, 5, 6	Functional module has been installed in the indicated slot. If the LED is
	off, the slot is empty or the module is not functional.
PCMCIA 0, 1	Data activity on the indicated PCMCIA slot.

Front-Panel LEDs on Cisco 3631 Routers

The LEDs on the front panel of the router enable you to determine router performance and operation. Figure A-4shows the LEDs on the front panel of the Cisco 3631 router. For an explanation of these LEDs see Table A-5.

Figure A-4 Cisco 3631 Front-Panel LEDs

Power LED Activity LED

SYS/RPS LED

62575

Cisco 3600 Series Routers Hardware Installation Guide

OL-2056-05 A-7