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Troubleshooting A-11

Front Panel LEDs

You can use the LEDs on the front panel of the router to determine router performance and

operation. This section contains information about reading the LEDs and using them to

troubleshoot problems.

Figure A-2 Front Panel LEDs—Cisco 1601 and Cisco 1602

Table A-1 Front Panel LED Functions—Cisco 1601 and Cisco 1602

LED Color Description

SYSTEM PWR Green The router is on, and DC power is being supplied.

SYSTEM OK Green The router has successfully booted. Blinks during the boot cycle.

LAN ACT Green Data is being sent to or received from the local Ethernet LAN.

LAN COL Yellow Flashing indicates packet collisions on the local Ethernet LAN.

SER 0 CD Green • Cisco 1601 has an active connection on the serial port.

• Cisco 1602 has an active connection on the DSU/CSU port.

SER 0 ACT Green • Cisco 1601 serial port is sending or receiving data.

• Cisco 1602 DSU/CSU port is sending or receiving data.

WIC CD/B1 Green • Serial WAN interface card has an active connection on the serial port.

• ISDN WAN interface card has an ISDN connection on B-channel 1.

WIC ACT/B2 Green • WAN interface card serial port is sending or receiving data.

• WAN interface card ISDN port has a connection on B-channel 2.

H6863

PWR

ACT

COL

LAN

ACT/B2

SYSTEM

WICSER 0

CD/B1

1 2 ... 54 55 56 57 58 59 60 61 62 63 64 ... 87 88

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Cisco 1600R Guía de instalación Pagina 59