|reply to tmac |
Re: [Speed] Comcast performance speeds fluctuate
»Comcast High Speed Internet FAQ »How To Get Help!
I'm in Provo, Utah. The speed fluctuations happen all day. I have a Motorola SB5101 modem with firmware version SB5101-220.127.116.11-GA-00-NOSH. I thought the issue may be my Cisco router at first, but I am plugged directly into my modem and still experience the speed problems. I'm running AVG 2012 (newest version). I have tested and found the problem on my Windows 7 PC and my Android phone, using both Firefox and Chrome browsers.
I'm subscribed to the Comcast Performance 20mbps down/4mbps up connection.
post your modem signals too
and I am pretty sure performance is 15/2
unless your area is different
Frequency 555000000 Hz
Signal To Noise Ratio 38.9 dB
Power Level 8.8 dBmV
Channel ID 11
Frequency 28000000 Hz
Power 47.2 dBmV
I got an upgrade to 20mbps, and I do reach those speeds every once in a while, it's just very inconsistent.
20 probably includes PowerBoost. You need to provide all the info requested above so we can help you. Speed tests and all.
Here are some speed tests I ran yesterday on speedtest.net:
I'll just list the download speed, because the upload speed always stayed about the same (around 4mb/s) and ping was always around 45 ms
2. 10.11 mb/s
3. 15.24 mb/s
4. 4.33 mb/s
5. 3.81 mb/s
6. 18.73 mb/s
7. 22.42 mb/s
8. 7.91 mb/s
This was all within an hour time period, and the speed fluctuates like this pretty much all throughout the day. I realize that it would be unreasonable to expect a constant 20mb/s as Comcast advertises, but I would think I should be getting pretty constant averages over 10mb/s. I contacted Comcast and the service rep just told me to reset my modem, which of course did not fix the problem. Any help here would be great.
Download/Run this and post the results: »www.cc.gatech.edu/~partha/diffpr···obe.html
DiffProbe release. January 2012. Build 1008.
Shaper Detection Module.
Connected to server 18.104.22.168.
Upstream: 1364 Kbps.
Downstream: 5464 Kbps.
The measurement will take upto 2.5 minutes. Please wait.
Checking for traffic shapers:
Upstream: No shaper detected.
Median received rate: 1344 Kbps.
Downstream: No shaper detected.
Median received rate: 5338 Kbps.
For more information, visit: »www.cc.gatech.edu/~partha/diffprobe
Time to call Comcast.
I was afraid of that. Any idea of what's causing the problem?
Faulty modem, some type of noise issue possibly... Speaking of modems, which one do you have ?
I've got the SB5101. It's on rental from Comcast.
Just go trade it in for a newer model modem. I did and all is good.
|reply to tmac |
Yeah, you need a newer modem.
I'm thinking about just returning the rental modem and buying my own. Any recommendations for a good one for the service I have (20mbps down/4mbps up)?
Also, has anyone had any experience returning a Comcast rental modem? I'm hoping they will just take it and take off the $7/month I'm paying to rent it, but I'm worried that it may have been part of my contract, and I may be forced to rent it until my contract is up (in a year).