A-7
Cisco 2600 Series Routers Hardware Installation Guide
OL-2171-02
Appendix A Troubleshooting the Router
Reading the LEDs
Figure A-7
Cisco 2691—Rear-Panel LEDs
Table A-4
Cisco 2691—Rear-Panel LED Descriptions
LED
Description
LINK
On when a link has been established with the hub or switch at the
other end of the cable.
ACT
On when packets are being transmitted or received on the Ethernet
interface.
100 Mbps On when the speed of the interface is 100 Mbps. Off when the speed
of the interface is 10 Mbps.
CF1
On when the Flash device is being accessed—either READ or
WRITE.
72011
SEE MANU
AL BEFORE INST
ALLATION
CONSOLE
AUX
FAST ETHERNET 0/1
FAST ETHERNET 0/0
AL
CD
LP
RD
TD
SEE MANU
AL BEFORE INST
ALLATION
DSU
56K
AL
CD
LP
RD
TD
SEE MANU
AL BEFORE INST
ALLATION
DSU
56K
ACT LED
100 Mbps LED
LINK LED
CF1
LED
FastEthernet 0/1
FastEthernet 0/0
ACT
100 Mbps
LINK
ACT
100 Mbps
LINK
CF1
CISCO2691
Compact
Flash
slot
Console
port
Auxiliary
port