System Status
Status LED
Any one of: minor alarm, synchronization in holdover,
or free-running mode.
Amber
Any major or critical alarm (high temperature reported
for any sensor) or multiple fan failures.
Red
Short press ZTP is initiated and this status continues
until ZTP is initiated.
Blinking Green and Red alternately
GNSS LED
—The LED is present on the GNSS module.
Table 4: GNSS LED
GNSS Condition
GNSS LED
GNSS is not configured or GNSS is shut down.
Off
GNSS is in normal state; self survey is complete
Green
GNSS is in powerup state; GNSS is not tracking any
satellite.
Orange
Auto holdover
Amber
Learning state is normal, self survey is in progress.
Blinking green
Management Port LED
Table 5: Management Port LED
Management Port Condition
Management Port LED
Link up in 1000 Mbps
Green
Left LED
Activity in 1000 Mbps
Blinking green
Link up in 100/10 Mbps
Amber/Orange
Activity in 100/10 Mbps
Blinking Amber/Orange
Link down
Off
Link up in full duplex
Green
Right
Link up in half duplex
Off
SFP+ LEDs
Table 6: SFP+ LEDs
SFP+ Condition
SFP+ LED
Link up in 1G or 10G.
Green
Cisco ASR-920-12SZ-A and Cisco ASR-920-12SZ-D Aggregation Services Router Hardware Installation Guide
14
Overview
LED Indicators