Why does restarting the modem fix latency

internetmodemperformance

In the last few days I've noticed poor internet performance. Today I ran a speed test and the results were abysmal… 10mb down and 0.18mb up (which really hurt, because I was trying to RDC from another location). I pay for 30mb down and 5mb up. Latency was at 128ms.

Before calling my ISP to give them a verbal lashing, I unplugged the modem and plugged it back in. I pretty much got top speed after doing that (with a latency of 7ms).

I'm the type of guy that likes to know what goes on under the hood. So what's the deal? What mysterious powers does restarting give to my modem?

Best Answer

Restarting can do wonders, a few things off the top of my head...

Reset NVRAM Clear any cached routes/dns info Cause it to resync with the local NID

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