The "Broadband" light on my BGW210 router goes red, but we still have internet working ok. This used to happen just occasionally. Now it seems to be happening much more often. Recycling power resolves the situation (goes green), but a few days later I notice it's back to red. Yet, no interruption in service noticed. I'm going to assume that a momentary sync failure is causing it, and the router fails to reset the light to green when it resyncs.
Which makes me wonder if I need to upgrade the router/modem? We've had this one for quite a number of years now. I assume the underlying technology has improved since.