Front Panel Leds - Cisco 1603R User Manual

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
PWR
Table A-1 Front Panel LED Functions—Cisco 1601 and Cisco 1602
LED Color
SYSTEM PWR Green
SYSTEM OK Green
LAN ACT Green
LAN COL Yellow
SER 0 CD Green
SER 0 ACT Green
WIC CD/B1 Green
WIC ACT/B2 Green
SER 0
CD
SYSTEM
OK
ACT
Description
The router is on, and DC power is being supplied.
The router has successfully booted. Blinks during the boot cycle.
Data is being sent to or received from the local Ethernet LAN.
Flashing indicates packet collisions on the local Ethernet LAN.
• Cisco 1601 has an active connection on the serial port.
• Cisco 1602 has an active connection on the DSU/CSU port.
• Cisco 1601 serial port is sending or receiving data.
• Cisco 1602 DSU/CSU port is sending or receiving data.
• Serial WAN interface card has an active connection on the serial port.
• ISDN WAN interface card has an ISDN connection on B-channel 1.
• WAN interface card serial port is sending or receiving data.
• WAN interface card ISDN port has a connection on B-channel 2.
WIC
CD/B1
LAN
COL
ACT
ACT/B2
Front Panel LEDs
Troubleshooting A-11