To reset the router you may follow the steps given below. Power on your router.

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Red light on router. If you have already used the above instructions but still getting the blinking or solid red light on your router. The led color indicates the speed. Solid green or white. White for gigabit ethernet connections and amber for 100 mbps or 10 mbps ethernet connections. You reset the router and reconfigure it again. Assuming that your red is the same as netgears amber.
On a modem or a routermodem combo similar to routers most modems both cable and dsl have a light dedicated to the broadband connection. Your router is powering on. They also indicate the status of your internet wi fi ethernet and wps connections. The leds on your router indicate the status of the connection between your router and the devices that are connected to it. Although often red light means an error theres plenty of devices that use red just to indicate that theyve got power are sleeping or some such. Your router is not receiving power.
Your router is ready. In my peripheral vision theresv my philips tv thats in sleep state showing red light. Its the light on the ethernet port that connects to the roku. The first thing to do is remaining calm and waiting for about 30 seconds. If the dsl modem keeps giving red dsl light signal it means there is a problem with the modem. Red light is the sign that the dsl modem is unable to detect centurylinks internet equipment although you have to connect the line.
One red light on the modem. Witticism aside check the manual for the router for diagnostic information. This light is often labeled as online cable sync or.