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Behavior in the
Power-Up State
Color
LED
LED Label
No.
All the power
supplies are within
operational limits.
Green
Power
PWR
1
Major alarm
indicator.
Red
MAJOR
MAJ
2
Critical alarm
indicator. Will be
off when the router
is initially powered
up and all the
configured
components are
available.
Red
CRITICAL
CRIT
3
Minor alarm
indicator
Amber
MINOR
MIN
4
Cisco IOS has
successfully booted.
Green
STATUS
STAT
5
The system is at
ROMMON.
Yellow
System failure. Will
be off when the
router is powered
up.
Red
Indicates that the
mini eUSB
connector is used as
the console.
Green
USB Console
Enable
EN
6
Indicates that the
RJ-45 connector is
being used as the
console.
Off
Cisco ASR 1001-X Router Hardware Installation Guide
4
Cisco ASR 1001-X Router Overview
Cisco ASR 1001-X Router LEDs