For demonstration purposes, we will be using the using the diagnostic interface of the incredibly common Motorola/Arris Surfboard 6141 broadband cable modem, but the general layout will be similar across modems. With that in mind, let’s take a look at how you can access the diagnostic page and what to do with the information you find therein. This is intended to help you find the problem, not necessarily fix it. While it’s unlikely you’ll actually break anything if you do wipe your modem in a fit of frustration, you might end up spending the next hour getting it reprovisioned. Even if the diagnostic control panel in your modem does have user-editable settings (which is very rare), you shouldn’t mess around with that stuff unless expressly instructed to do so by your internet service provider. In those cases, you need to peek into the modem to see what’s going on. By accessing the tiny little web server hidden inside your modem and reading the diagnostic pages, you can learn a ton of things about your modem and connection like general status, signal strength, and event history via the system log.Īrmed with that information you can then say something like “Okay, it’s not the modem or a signal strength issue, so I’ll focus on the router and other elements of my network” or “Something is clearly going on with the modem so I’ll call the cable company.” While we all tend to over-focus on the router as the source of potential problems, oftentimes the modem (or the line it’s connected to) can be at fault. Or maybe your internet connectivity drops out intermittently and no amount of tinkering with your router has solved your problems. So why look at the diagnostic page and logs of your cable modem in the first place? Think of this familiar scene: something weird is going on with your internet access, so you dutifully unplug your modem and router, start them back up, and things work well again…for a spell.
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RELATED: How to Troubleshoot Your Internet Connection, Layer-By-Layer While some people do occasionally peek at the control panel of their router, very few people ever look at their modems–or even realize they can do so. Unbeknownst to most people, cable modems (and other broadband modems) have diagnostic and logging functions built in, just like routers. Although unknown to and ignored by most people, cable modems have a diagnostic that can help you troubleshoot connection problems.
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