A-7
Cisco 3700 Series Routers Hardware Installation Guide
OL-2180-08
Appendix A Troubleshooting
Reading Rear Panel LEDs
Figure A-4
Cisco 3745 Router Rear-Panel LEDs
Fast Ethernet 0/0 100Mbps
and
Fast Ethernet 0/1 100Mbps
Off
10-Mbps communication speed attained,
or no link established.
Solid green
100-Mbps communication speed attained.
Table A-3
Cisco 3725 Router Rear-Panel Indicators (continued)
LED Indicator
State
Description
Table A-4
Cisco 3745 Router Rear-Panel Indicators
LED Indicator
State
Description
POWER
Off
An error condition is detected in the operating ranges.
Solid green
Operating voltages on mainboard are within acceptable ranges.
SYS
Off
Router not receiving power.
Blinking green
Router running ROM monitor; no errors detected.
Solid green
Router operating normally.
Amber
Router receiving power but malfunctioning.
CF
Off
CF can be ejected; device is idle.
Solid or blinking green Do not eject CF; device is busy.
Fast Ethernet 0/0 ACT
and
Fast Ethernet 0/1 ACT
Off
Interface not receiving packets.
Solid or blinking green Interface receiving packets.
Fast Ethernet 0/0 LINK
and
Fast Ethernet 0/1 LINK
Off
No link established.
Solid green
Link is established.
Fast Ethernet 0/0 100Mbps
and
Fast Ethernet 0/1 100Mbps
Off
10-Mbps communication speed attained, or no link established.
Solid green
100-Mbps communication speed attained.
72083
EN
V0
BANK 4
BANK 3
BANK 2
BANK 1 B
ANK 0
NM-HDV
VWIC
2MFT-E1
SEE
MANUAL
BEFO
RE
INSTALLA
TION
CTRLR E
2
CTRLR E
1
AL
LP
CD
EN
V0
BANK 4
BANK 3
BANK 2
BANK 1 B
ANK 0
NM-HDV
VWIC
2MFT-E1
SEE
MANUA
L
BEFORE
INSTAL
LATIO
N
CTRLR E
2
CTRLR E
1
AL
LP
CD
EN
V0
BANK 4
BANK 3
BANK 2
BANK 1 B
ANK 0
NM-HDV
VWIC
2MFT-E1
SEE
MANUAL
BEFORE
INSTAL
LATION
CTRLR E
2
CTRLR E
1
AL
LP
CD
EN
V0
BANK 4
BANK 3
BANK 2
BANK 1
BANK 0
NM-HDV
VWIC
2MFT-E1
SEE
MANUAL
BEFORE
INSTALLA
TION
CTRLR E
2
CTRLR E
1
AL
LP
CD
SEE MAN
UAL BEFO
RE INSTA
LLATION
SERIAL 1
SERIAL 0
CONN
CONN
WIC
2T
SEE MAN
UAL BEFO
RE INSTA
LLATION
SERIAL 1
SERIAL 0
CONN
CONN
WIC
2T
SEE MAN
UAL BEFO
RE INSTA
LLATION
DSU
56K
C
D
A
L
L
P
R
D
T
D
ETM
NPA
AIM1 AIM
0
POWER S
YSTEM
POWER SYS
CF
FastEthernet 0/0
FastEthernet 0/1
ETM NPA AIM1 AIM0