1-31
Cisco 2900 Series and 3900 Series Hardware Installation Guide
OL-18712-02
Chapter 1 Overview of the Routers
LED Indicators
PS2
Green
System is running.
Front bezel
Front bezel
Amber
System is not running.
AC OK
1
Green
AC power connected.
Front bezel,
not available
on 2901
Front bezel
Off
No AC power connected
RPS
Green
System is running on external
RPS power supply.
Front bezel,
not available
on 2901
—
SYS
Solid green
Solid green indicates normal
operation.
Front bezel
Front bezel
Blinking green
System is booting or is in ROM
monitor mode.
Amber
System error.
Off
Power is off or system board is
faulty.
ACT
Solid or blinking
green
Solid or blinking indicates packet
activity between the forwarding
and routing engine and any I/O
port.
Front bezel
Front bezel
Off
No packet transfers are
occurring.
RJ-45 CON
Green
Serial console is active.
Back panel
Back panel
USB CON
Green
USB console is active.
Back panel
Back panel
GE: Link
Green
Solid green indicates the Ethernet
port has a link partner.
Back panel
Back panel
SFP S
Blinking green
Blinking frequency indicates port
speed. See the definition for the S
LED.
Back panel
Back panel
SFP EN
Off
Not present.
Back panel
Back panel
Green
Present and enabled.
Amber
Present with failure.
CF0/CF1
Green
Flash memory is being accessed;
do not eject the CompactFlash
memory card.
Back panel
Back panel
Amber
CompactFlash error.
Back panel
Back panel
Off
Flash memory is not being
accessed; okay to eject the
CompactFlash memory card.
Back panel
Back panel
Table 1-13
Cisco 2900 and 3900 Series Routers LED Indicators (continued)
LED
Color
Description
Cisco 2900
Routers
Cisco 3900
Routers