Concept library
Concept guides
Short, reusable explainers for the ideas behind router light troubleshooting.
Blinking versus pulsing on a router light Spectrum's WiFi 6 manual separates the two: flashing is booting up, and pulsing is connecting to the internet. Read the guide → Cox router lights on but no internet On Cox's XER10 and CGM4141, solid white means online, and red means no connection or offline. Read the guide → Download speed test A download speed test measures how fast data reaches your device — but tools measure it differently: M-Lab's NDT uses a single stream by design,… Read the guide → How to check for an ISP outage Check for an outage with your provider's named tool. AT&T uses Smart Home Manager or myAT&T, and Verizon uses the Guided Solutions Tool. Read the guide → How to fix a blinking orange light on a router On an Xfinity gateway, orange is the connecting group: wait about 15 minutes, then restart once if it has not changed. Read the guide → How to fix a blinking orange Xfinity gateway On an Xfinity gateway, blinking orange means it is connecting to Xfinity systems. Xfinity's official table says to wait about 15 minutes. Read the guide → How to fix a red light on a router Fix a red light by its brand and pattern. On Spectrum, a red pulse is a connectivity issue, red alternating with blue or green is a firmware update,… Read the guide → How to fix a Spectrum router blinking blue light On the Spectrum WiFi 6 router, blue is a working state: flashing is booting, pulsing is connecting, and solid is connected. Read the guide → How to get an accurate speed test result Decide which layer you are measuring — the line into your home, or one device over WiFi — then test that layer deliberately: wired where possible,… Read the guide → How to read a router LED code To read a router LED code, match three things: the device's brand and model from the label, the light's colour, and its pattern. Read the guide → Internet speed test Google: which test is which Searching "speed test" on Google offers a built-in test connected to Measurement Lab (M-Lab) that shows download, upload and latency and usually… Read the guide → LOS light blinking red: what to check No source on this site covers a fibre box's LOS label or its blinking red light. The red states in these sources belong to Cox, Spectrum and Verizon… Read the guide → Modem lights: what each label means On a cable modem, Cable Link on means registration is complete and the gateway is operational, and blinking means startup and registration. Read the guide → Restart or factory reset: which to use A restart keeps your settings, and a factory reset removes them. Use a restart first. Read the guide → Router blinking after a power outage After a power cut, a router runs its normal start-up sequence. On Spectrum's WiFi 6 that is flashing, then pulsing, then solid blue or green. Read the guide → Router blinking but internet works A router can blink while the internet works, because the light shows a state the device has not finished. Read the guide → Router blinking green with no internet Green is not the no-internet state in these sources. Spectrum's solid green means connected, and pulsing or flashing green means connecting. Read the guide → Router boot sequence lights by brand A router's boot runs through a few light states that end in a steady, working state. Read the guide → Router lights after a restart or a reset After a restart, a router shows its normal boot: solid amber on Cox's XER10, or the flashing-to-solid sequence on Spectrum's WiFi 6. Read the guide → Router lights guide: index of covered devices This is an index of the router and modem light guides on this site. It covers Spectrum, Cox, Verizon, AT&T, NETGEAR and Xfinity devices that the… Read the guide → Router power light flashing The sources on this site do not describe a flashing power light. Spectrum has no separate power light, Cox's power state is off, and Verizon's is… Read the guide → Spectrum modem all lights on: what to check Spectrum's public modem-light page defines each light separately and has no all-lights-on state. Read the guide → Verizon router blinking white but no internet On the Verizon CR1000A, blinking white is the router starting, and solid yellow is the chart's no-internet state. Read the guide → What router light colours mean, by brand Router light colours depend on the brand, so no single code applies. White is online on Cox and normal on Verizon. Read the guide → Why is my AT&T router blinking red? On the AT&T BGW320, a fast blinking red Service light is a network service issue that may be momentary, and a slow blinking red Service light means… Read the guide → Why is my Cox router blinking orange? Cox's tables do not describe a blinking orange light. Amber is a start-up step: solid for boot, and flashing for IP acquisition on the XER10 or… Read the guide → Why is my router blinking blue? A blue light depends on the device. On Spectrum's WiFi 6, blue is booting, connecting or connected. Read the guide → Why is my router blinking green? Green depends on the device. On Spectrum's WiFi 6, flashing or pulsing green is booting or connecting, and solid is connected. Read the guide → Why is my router blinking orange? An orange light depends on the device. On an Xfinity gateway, orange is the connecting group, with about 15 minutes to wait. Read the guide → Why is my router blinking red? A red light depends on the device and the pattern. On Spectrum's WiFi 6, a red pulse is a connectivity issue, red and blue or green alternating is a… Read the guide → Why is my router blinking? Find your device first A blinking router light depends on the device. Spectrum's WiFi 6 flashing is booting, pulsing is connecting. Read the guide → Why is my Spectrum router blinking blue? On the Spectrum WiFi 6 router, a blue light is a working state. Flashing means it is booting, pulsing means it is connecting to the internet, and… Read the guide → Why is my Spectrum router blinking red? On the Spectrum WiFi 6 router, a red light means one of three things, depending on the pattern: a red pulse is a connectivity issue, red and blue or… Read the guide → Why is my Verizon router blinking white? On the Verizon CR1000A, a blinking white light means the router is booting or restarting, according to Verizon's user guide. Read the guide → Why is my WiFi router blinking red? On Spectrum's WiFi 6 router, a red pulse is a connectivity issue, red alternating with blue or green is a firmware update, and red alternating with… Read the guide → Why is my Xfinity router blinking blue? Your Xfinity router blinks blue because it is in WPS pairing mode, which Xfinity's official table and WPS article confirm. Read the guide → Why is my Xfinity router blinking green? Your Xfinity router blinks green because it is still connecting to Xfinity or keeps losing its connection. Read the guide → Why is my Xfinity router blinking orange? Your Xfinity router blinks orange because it is still trying to connect to Xfinity's systems. Read the guide → Xfinity Router Blinking Green But No Internet: Fix A blinking green light with no internet usually means the gateway is still connecting or keeps dropping its connection, per Xfinity's official table. Read the guide →