A-4
Cisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide
OL-7872-04
Appendix A Troubleshooting
Reading the LEDs
Reading the LEDs
The LEDs on the front panel of the router and corresponding modules are aids for determining router
and module performance and operation.
Figure A-1
shows the locations of the LEDs.
Table A-1
on this
page and Tables
A-2
and
A-3
on page 5
describe the LEDs.
Figure A-1
Front Panel of the Cisco MWR 1941-DC-A Router
Table A-1
Chassis LEDs
LED
Color
State
Description
Power
(labeled
PWR)
Green
On
Operating voltages on the mainboard are within acceptable
ranges.
Off
The router is not connected to a power supply, or an error
condition has been detected in the operating voltages.
Status
(labeled
STAT)
Green
On
The router software has booted up, and the system is
operational.
Off
The router has not yet booted, or an error condition has been
detected in the boot process.
Activity
(labeled
ACT)
Green
On
Packets being transferred.
Off
No activity is occurring.
65783
SEE MANUAL
BEFORE IN
STALLATION
SEE MANUAL B
EFORE INSTA
LLATION
DSU
56K
CONSOLE
AUXILIARY
Network module
slot
Fast
ethernet
LEDs:
Activity (G)
Speed (G)
Link (G)
VWIC LEDs:
Alarm (A)
Loopback (A)
Carrier detect (G)
VWIC
position 0
2 ports
VWIC
position 2
2 FE
ports
VWIC
position 1
2 ports
Compact
flash slot
Console
port
Auxiliary
port
VWIC LEDs:
Alarm (A)
Loopback (A)
Carrier detect (G)
Power (G)
Air vent (both sides)
Status (G)
Chassis LEDs
Activity (G)
