The Universal Light Taxonomy
Router brands use different icons, but the lights fall into the same categories:
- Power — the router has electricity and has booted
- Internet / WAN / Globe — the router has negotiated an internet connection with your ISP
- Wi-Fi / Wireless / 2.4 & 5 GHz — the radio is broadcasting
- LAN / Ethernet — a wired device is connected to a LAN port
- USB — USB storage or printer is attached and active
- WPS — WPS pairing mode is active
Universal Color Code
| Color / pattern | General meaning |
|---|---|
| Solid green or white | Working normally |
| Blinking green or white | Activity — data is passing |
| Solid amber / orange | Connected but degraded (no internet, firmware update, limited connectivity) |
| Blinking amber / orange | Attempting connection, or firmware updating |
| Solid red | Critical problem (no internet, authentication failure, hardware issue) |
| Blinking red | Active error — reset or reconnection needed |
| Off | Disabled, disconnected, or feature not in use |
| Purple / blue | Varies by brand (setup, pairing, factory reset mode) |
Netgear Routers
| Light | State | Meaning |
|---|---|---|
| Power | Solid white | On and booted |
| Power | Solid amber | Booting up |
| Power | Blinking amber | Firmware corrupt — power cycle, then factory reset if persistent |
| Internet | Solid white | Connected to internet |
| Internet | Solid amber | Cable connected but no internet — ISP or modem issue |
| Internet | Off | No Ethernet cable from modem, or ISP down |
| Wi-Fi (2.4/5) | Solid white | Radio on |
| Wi-Fi | Off | Wi-Fi manually disabled |
TP-Link Routers
| Light | State | Meaning |
|---|---|---|
| System (gear icon) | Solid green | Ready |
| System | Flashing green | Starting up or upgrading firmware |
| Internet | Solid green | Internet connected |
| Internet | Solid orange / off | No internet — cable, DSL sync, or ISP issue |
| Wi-Fi (2.4/5) | Solid green | Wi-Fi active |
| Wi-Fi | Flashing | Data transmitting |
ASUS Routers
ASUS routers typically have a single power LED with extended indicators on higher-end models. The power light behaves like most others. Additional lights include WAN, LAN, 2.4 GHz, 5 GHz, and USB.
- Power off, but plugged in: the router isn't booting — try a different power outlet or factory reset
- WAN light off: no cable from modem, or the cable has failed
- WAN light amber: cable detected but internet authentication failed — check ISP credentials in admin page
Linksys Routers
| Light | State | Meaning |
|---|---|---|
| Power | Solid | Normal |
| Power | Flashing | Booting or firmware upgrade |
| Power | Solid amber | Boot error — reset required |
| Wi-Fi | Flashing fast | Heavy data activity (normal) |
Xfinity / Comcast xFi Gateway
| Color | Pattern | Meaning |
|---|---|---|
| White | Solid | Online and working |
| White | Slow pulse | Starting up or updating firmware |
| Green | Solid | Connected to ISP but Wi-Fi off |
| Amber | Solid | Running on 2.4 GHz only (5 GHz off) |
| Red | Solid | No internet service |
| Red | Blinking | Hardware failure or modem can't register with ISP |
| Blue | Blinking | WPS pairing mode |
| Off | — | No power |
Eero
Eero uses a single LED on the front with a more nuanced color code:
| Color | Meaning |
|---|---|
| Off (with power) | Booted but idle — normal |
| Solid white | Starting up |
| Flashing white | Looking for internet / initial setup |
| Solid blue | Broadcasting Bluetooth for setup |
| Flashing blue | Connecting to the Eero app |
| Solid green | Multiple devices detected during setup |
| Flashing green | Factory reset complete |
| Solid red | No internet |
| Solid yellow | Unauthorized power supply |
Google Nest Wifi
- Solid white — ready and working
- Pulsing white — ready to set up (Google Home app)
- Pulsing blue — factory reset in progress
- Pulsing orange — no internet from modem
- Solid orange — software update in progress
- Solid red — hardware error; contact support
The Most Common "Red / Amber Light" Fixes
- Check the modem first — most "no internet" lights on a router are actually caused upstream. If the modem's Online or Cable/DSL light is off or blinking, the router is innocent.
- Power cycle both — unplug the modem for 30 seconds, wait for it to come back online, then unplug the router for 30 seconds
- Swap the Ethernet cable between modem and router — failed cables are more common than people expect
- Check the ISP status page or app — many "router errors" are actually outages
- Check admin page — the router's admin UI usually explains the amber/red condition (authentication, DHCP, DNS, etc.)
- Factory reset as last resort — see our factory reset guide
When to Call the ISP vs. Try It Yourself
- Call the ISP — modem's upstream/online light is off, you see red on the modem itself, service outage confirmed, intermittent complete drops on multiple devices
- Fix it yourself — router light is amber but modem is fine, Wi-Fi light is off (manually disabled), LAN light is off on one port only (cable or port issue)
Frequently Asked Questions
What does a red light on my router mean?
A red light usually indicates no internet connection or a hardware fault. Check the modem first — most router red lights are caused by upstream issues with the modem or ISP, not the router itself.
Why is my router light blinking orange?
Orange or amber blinking usually means the router detects a connection problem but is still trying. Possible causes: the modem isn't syncing with the ISP, the ISP is performing maintenance, or a firmware update is in progress. Leave it 5 minutes; if it persists, reboot both modem and router.
Should all router lights be solid green or white?
Power and internet lights should be solid. Wi-Fi and LAN lights typically blink during activity — that's normal. Any persistent amber or red on Power, Internet, or WAN means a problem that needs investigation.