Fed up with my SBG6580. Need some expert advice on my next move

tojo78

Distinguished
Jan 2, 2009
21
0
18,510
First off, I am not a networking expert by any means. I know enough to be dangerous! :pt1cable: I have had a Motorola SBG6580 for 4 to 5 years. I have had issues with it at the last two places I lived and those issues continue at our house now. Major issue is wifi signal strength in the basement (modem is upstairs) and constant internet drops.

I have had Comcast out twice now. First time they did find an issue with the line running into the house and how the line was being split once it was in the house. Guy was very knowledable and fixed both issues. Internet seems to work great after that for about 2 months and then started dropping again at the modem. When I power cycle the modem, it comes right back on but might only last an hour or two. Sometimes I would get lucky and it would go a couple days without dropping.

I had Comcast our again within the past couple months and they could not find the issue. Signal at the wall outlet was normal and the line outside was fine. Issue continued with random drops.

So if the lines into the house are not the issue, I believe it has to be with the cable modem itself. I have not heard much good press on the Motorola SBG6580. Comcast itself only gives it 1 out of 3 stars on their website for compatibility. So I am ready to swap it out, but I am not sure what I should get next. I was considering leasing one from Comcast. It sounds like their standard modem also serves as a wireless router as well just like the SBG6580. But didnt know if this would be an inprovement over my current SBG6580.

I am willing to go buy my own stuff and budget really isnt an issue. It important that my internet is strong and has little to no downtime as my wife and I both use our iPhones throughout the house on the wifi and I do online gaming on my PC and XBox One. I also do video steaming from Netflix and WWE Network.

So basically what I am looking for is some advice if Comcast's standard modem is worth a shot or if I would be wasting my time and money and should just go out and get my own gear for optimial performance. Suggestions for cable modem and router would be VERY helpful. Thanks!
 
Solution
So first thing to try is to test on wired and see if the connection is stable. If it is only the wireless I would bridge your current modem and buy a router that uses a ethernet for wan. It will give you a much better selection of routers to choose from. It should also be a little cheaper since you are not paying for another modem.

If you get failures on wired connections it gets very questionable if just a different modem is going to make much difference. You would really have to dig to find out if the modem chips used inside were actually different. The vast majority of cable modems use broadcom chips so if you had issues with one you could get exactly the same chip in a different one.

The key numbers are going to be your...

Eximo

Titan
Ambassador
So first thing to try is to test on wired and see if the connection is stable. If it is only the wireless I would bridge your current modem and buy a router that uses a ethernet for wan. It will give you a much better selection of routers to choose from. It should also be a little cheaper since you are not paying for another modem.

If you get failures on wired connections it gets very questionable if just a different modem is going to make much difference. You would really have to dig to find out if the modem chips used inside were actually different. The vast majority of cable modems use broadcom chips so if you had issues with one you could get exactly the same chip in a different one.

The key numbers are going to be your signal level up and down in the wan settings. There are a number of table you can find better than I can reproduce here that tell what good and bad numbers are.

Still even if you replace the cable modem I would still go with separate modem and router if you can afford it.


Your problem may be simple wireless interference and recycling the router may just have the router picking a different channel. Since your neighbors are doing the same thing you get random interference.

A powerline network is your best bet to get signal between floors wireless signals are designed to favor transmission horizontally as compare to vertically
 
Solution