Forever we have been using a 3mb line from AT&T. We've also been using a really crappy modem/router from them for a few years and the thing was terrible, it'd drop connection and slow to a 5 or 10 Kb/s crawl whenever anyone would close a web browser for some reason.
For the same price per month we switched to a 12Mb/s line from Comcast, we got a new modem, and since our router before was so bad a new router to go with it. A Belkin DB n600. On Tuesday when they first installed the thing it was very very fast. We were downloading stuff at an average speed about 2Mb/s, yesterday I think it was pretty much the same until late at night. I was trying to watch youtube videos on my Iphone 4S and they would not load, it'd take like 20 mins to load some 5-10 minute videos. Today I decided to test it out on my gaming rig in the basement, which runs a wireless adapter, by downloading a WoW patch, and it was sitting <150 Kp/s. On our old line we'd get around 300Kp/s assuming it wanted to work right. I thought it might be my adapter, or worse my computer itself, so I run the same test on my brothers computer, that's ones hooked up with a cable and it still has the same speeds. Running the test from speedtest.net also yields results the same on both machines.
So what's going on, is it just that it's not going to run so fast on some days because of weather, ill tempered sea bass or other stuff? The router updated itself to the newest firmware the other day, and I decided to enable some Intellistream thing just today but still nothing has changed. I hope the new firmware isn't what is bogging it down.
My parents are okay because Comcast has much better service, but I'll be pissed at myself if it doesn't speed up to at least the same speeds as our old line, even if it is up and working right all the time.
First thing I tired was unplugging it, then factory reset, I think upgrading the firmware caused a software glitch that is messing it up, I'm going to take it back to Radio Shack today I'm probably going to go for the netgear n600, or spend the extra $40 on the Cisco e3500. Going to do some more research first
Well, I plugged my brothers desktop directly to the modem and it was still entirely to slow. So my router isn't the problem I don't know what else to do, unless Comcast set something up wrong some where or it's my modem itself. Please help.
If it's Motorola (others may offer the same page) then open a browser and surf to http://192.168.100.1 That's the modem's internal status page. There will be a signal tab. On that tab you want to see the downstream at or slightly above 0db and the upstream in the mid to high 30's. If upstream is in the mid to high 40's or above 50, or downstream is in double-digit negatives then there is a provider side problem that needs to be addressed.
Power Level: Signal to Noise Ratio:
Channel 1: -7.3 dBmV 40.2 dB
Channel 2: -7.2 dBmV 40.6 dB
Channel 3: -6.6 dBmV 40.9 dB
Channel 4: -6.4 dBmV 40.9 dB
Channel 5: 0.0 dBmV 0.0 dB
Channel 6: 0.0 dBmV 0.0 dB
Channel 7: 0.0 dBmV 0.0 dB
Channel 8: 0.0 dBmV 0.0 dB
Let me add that I'm about 99% sure that it's not a virus, for one thing it worked fine for the first two days, and for another my phone, and anything else (Kindle, etc...) is very slow even at night when all the computers are turned off. I scan for viruses a lot, and I rarely do anything on this computer anyway other than play games, and come to this site.
That 57.0dBmV on upstream channel 1 is concerning. I'm not that familiar with Cisco modems, but that level on a Motorola is max power on the transmitter (actually 3dB above max). It seems that the modem is having to quite literally shout to be heard which will have a most decidedly negative impact on performance.
This can be caused by one or more of: too many or wrong type splitters, bad fittings, pinched or severely bent cables, cable plant problem. You should have your provider out to check everything from street to modem.
Ok, so they gave us a new modem, when that didn't work they sent out a guy today, he found one of the cables was pinched, and he says another one needs to be replaced. Either way we're getting 20Mb/s down again, hopefully it'll stay close to that until they come back over here to replace the cable outside.