Chapter 1
Overview of Cisco 4000 Series ISRs
Table 1-1
LED Descriptions (Applies to Cisco 4461 ISR, Cisco 4451-X ISR, Cisco 4431 ISR, and Cisco 4351 ISR)
LED
Represents
FLASH
System Flash
Status
PSU
Power
Supply Unit
(P0 and P1)
Status
POE PSU
Power Over
Ethernet
(not
Power
supported
Supply Unit
in Cisco
0and 1 Status
IOS XE
3.8)
POE
Power Over
Boost
Ethernet
Boost Mode
(not
supported
in Cisco
IOS XE
3.8)
GE POE
Internal PoE
Daughter
Card Status
PWR
System
Power
AC OK
AC power
status
1. Cisco 4351ISR does not have SPF 3.
2. Cisco 4461 ISR does not have ISC.
3.
Cisco 4351 ISR does not support POE PSU 1.
OL-32185-02
Color
Description
Blinking
Compact flash/eUSB flash is present and is
Green
currently being accessed.
Do not remove the flash device while the
Note
system is powered on.
Green
PSU is on and provides power.
Amber
PSU is on but with errors or in a failure condition.
Off
Power supply is turned off.
Green
PSU is on and provides power.
Amber
PSU is on but with errors or in a failure condition.
Off
PSU is off.
Green
Two PoE power supplies are installed and operating
in boost mode.
Off
This can mean one of the following:
No PoE PSU is installed.
•
One PoE PSU is installed.
•
•
Two PoE PSUs are installed and operate in
redundant mode.
Green
PSU is installed and provides power
Amber
PSU is installed but in a failure condition.
Off
PSU is off.
Green
System power is on and system functions correctly. Bezel side
Green
System power is in the process of shutting down.
blinking
Amber
System power is up, but low level initialization has
failed.
Amber
System power is up, but the system has failed to
blinking:
come out of reset.
Off
System power is off.
Green
AC power is on.
Off
AC power is off.
Hardware Installation Guide for the Cisco 4000 Series Integrated Services Router
Hardware Features of Cisco 4000 Series ISRs
Location
Available On
Bezel side
All models
Bezel side
All models
Bezel side
All models1
Bezel side
Cisco 4451-X ISR,
Cisco ISR4431
Bezel side
All models
All models
On each
All models
power
supply unit
3
3
1-31