Arris SURFboard SBG6950AC2 Quick Start Manual page 10

Check
the front panel LEDs on your wireless gateway.
After a brief pause, the top three LEDs should be lit
SOLID blue:
10
D
Power
Send/Receive
Online
2.4 GHz Wireless
5 GHz Wireless
If any LEDs are not lit SOLID,
double-check the cable
connections.