No Broadband, but Wifi Still Works

Giganews Newsgroups
Subject: No Broadband, but Wifi Still Works
Posted by:  M.L (me@privacy.invalid)
Date: Sun, 23 Dec 2018

The broadband light on the Arris NVG510 is blinking red on an
Ethernet-connected Win10 desktop computer. Restarting the router
didn't help, and it continues blinking red even when the Ethernet
cable is disconnected. However, all smartphones on the network have
WiFi working and connected to the expected SSID. Why doesn't the
broadband issue affect the wireless connections?