Introduction
What does my SPA adapter's LED indicator blinking pattern mean?
Related Information
This article is one in a series to assist in the setup, troubleshooting, and maintenance of Cisco Small Business products.
Here is what the SPA2100's blinking patterns mean:
Slow Blinking (0.5s ON, 0.5s OFF continuous)
Fast Blinking (0.1s ON, 0.1s OFF continuous)
Heartbeat 2 - short, short, short, off for 1.2 seconds (0.1s ON, 0.1s OFF, 0.1s ON, 0.1s OFF, 0.1s ON, 1.2s OFF continuous)
Link Error - long, short, short, off for two seconds (0.5s ON, 0.3s OFF, 0.1s ON, 0.1s OFF, 0.1s ON, 2s OFF continuous)
Error 1 - short, short, long, off for two seconds (0.1s ON, 0.1s OFF, 0.1s ON, 0.1s OFF, 0.5s ON, 2s OFF continuous)
Error 2 - short, short, long, long, off for two seconds (0.1s ON, 0.1s OFF, 0.1s ON, 0.1s OFF, 0.5s ON, 0.2s OFF, 0.5s ON, 2s OFF continuous)
SOS - short, short, short, long, long, short, short, short, off for two seconds (0.1s ON, 0.1s OFF, 0.1s ON, 0.1s OFF, 0.1s ON, 0.3s OFF, 0.3s ON, 0.3s OFF, 0.3s ON, 0.3s OFF, 0.1s ON, 0.1s OFF, 0.1s ON, 0.1s OFF, 0.1sON, 2s OFF continuous)