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Contributor
JimmayVV
Posts: 5
Registered: ‎03-07-2012

Slow connection in Southern New Hampshire

per http://forums.comcast.com/t5/Connectivity-and-Modem-Help/Information-Required-for-Connection-related...

 

I decided to ping yahoo.com:

 

ping -t www.yahoo.com

Pinging any-fp3-real.wa1.b.yahoo.com [98.139.183.24] with 32 bytes of data:
Reply from 98.139.183.24: bytes=32 time=62ms TTL=48
Reply from 98.139.183.24: bytes=32 time=55ms TTL=48
Reply from 98.139.183.24: bytes=32 time=93ms TTL=48
Reply from 98.139.183.24: bytes=32 time=47ms TTL=48
Reply from 98.139.183.24: bytes=32 time=52ms TTL=48
Reply from 98.139.183.24: bytes=32 time=145ms TTL=48
Reply from 98.139.183.24: bytes=32 time=52ms TTL=48
Reply from 98.139.183.24: bytes=32 time=51ms TTL=48
Reply from 98.139.183.24: bytes=32 time=94ms TTL=48
Reply from 98.139.183.24: bytes=32 time=46ms TTL=48
Reply from 98.139.183.24: bytes=32 time=52ms TTL=48
Reply from 98.139.183.24: bytes=32 time=49ms TTL=48
Reply from 98.139.183.24: bytes=32 time=133ms TTL=48
Reply from 98.139.183.24: bytes=32 time=84ms TTL=49
Reply from 98.139.183.24: bytes=32 time=54ms TTL=49
Reply from 98.139.183.24: bytes=32 time=72ms TTL=49
Reply from 98.139.183.24: bytes=32 time=97ms TTL=49
Reply from 98.139.183.24: bytes=32 time=72ms TTL=49
Reply from 98.139.183.24: bytes=32 time=109ms TTL=49
Reply from 98.139.183.24: bytes=32 time=67ms TTL=49
Reply from 98.139.183.24: bytes=32 time=127ms TTL=49
Reply from 98.139.183.24: bytes=32 time=59ms TTL=49
Request timed out.
Reply from 98.139.183.24: bytes=32 time=107ms TTL=49
Reply from 98.139.183.24: bytes=32 time=71ms TTL=49
Reply from 98.139.183.24: bytes=32 time=62ms TTL=49
Reply from 98.139.183.24: bytes=32 time=74ms TTL=49
Reply from 98.139.183.24: bytes=32 time=52ms TTL=49
Reply from 98.139.183.24: bytes=32 time=56ms TTL=49
Reply from 98.139.183.24: bytes=32 time=146ms TTL=48
Reply from 98.139.183.24: bytes=32 time=50ms TTL=48
Reply from 98.139.183.24: bytes=32 time=194ms TTL=48
Reply from 98.139.183.24: bytes=32 time=52ms TTL=48
Reply from 98.139.183.24: bytes=32 time=102ms TTL=48
Reply from 98.139.183.24: bytes=32 time=56ms TTL=48
Reply from 98.139.183.24: bytes=32 time=61ms TTL=48

Ping statistics for 98.139.183.24:
Packets: Sent = 36, Received = 35, Lost = 1 (2% loss),
Approximate round trip times in milli-seconds:
Minimum = 46ms, Maximum = 194ms, Average = 78ms

 

So I don't know what this means but it is what it is.

 

Here is what my modem is telling me:

 

Downstream signal/noise: 37 dB  Downstream power: 0dBmV

Upstream power: 41 dBmV

 

So most of this seems to be good - but not my actual speed. Everything seems, just SLOW.

 

I went to http://speedtest.comcast.net/ and ping is decent (35ms) but speed is not - it starts around 0.45 Mbps, then it hovers around 0.35 Mbps and then it fails at the end. Hulu can never catch up for me, espn.com takes forever to load, basically everything. Websites with video seem to show the "no flash player detected" message until it finally loads. 

 

I finally got a result on the speed test and here is the result URL:

 

http://stage.results.speedtest.comcast.net/result/123633092.png

 

help!!!! thanks!!! this seems to be constant 24/7 but I work during the day so I have no clue how good it is M-F during the day, but that's irrelevant. I want it to be decent at night and weekends. I don't need to break world records, but come on, 0.38Mbps is not acceptable...

Contributor
JimmayVV
Posts: 5
Registered: ‎03-07-2012

Re: Slow connection in Southern New Hampshire

Modem: 

Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem

Cable Expert
i-am-nerdburg
Posts: 11,230
Registered: ‎06-27-2009

Re: Slow connection in Southern New Hampshire

If you have a router, please remove it from the loop. Hook your computer directly to the modem via Ethernet. Then run ShaperProbe and post your results pls.

 

 

Contributor
JimmayVV
Posts: 5
Registered: ‎03-07-2012

Re: Slow connection in Southern New Hampshire

Here we go - I'm not sure what this means:

 

DiffProbe release. January 2012. Build 1008.
Shaper Detection Module.

Connected to server 38.107.216.19.

Estimating capacity:
Upstream: 217 Kbps.
Downstream: 256 Kbps.

The measurement will take upto 2.5 minutes. Please wait.

Checking for traffic shapers:

Upstream: No shaper detected.
Median received rate: 224 Kbps.

Downstream: No shaper detected.
Median received rate: 224 Kbps.

For more information, visit: http://www.cc.gatech.edu/~partha/diffprobe

Cable Expert
i-am-nerdburg
Posts: 11,230
Registered: ‎06-27-2009

Re: Slow connection in Southern New Hampshire

Wow. You're internet IS slow. can you post your signal levels please? Go to http://192.168.100.1 we are interested in dBmV and SNR.

Networking Expert
Baric
Posts: 24,238
Registered: ‎07-28-2003

Re: Slow connection in Southern New Hampshire

[ Edited ]

If your modem signal levels are the same as posted above, then they look good.  There two other values you can't see, the upstream receive power and upstream SNR, you have to call and get them from Comcast, post those values.  Baring an issue there, something is not right.  Try reseting your cable more to default settings.  If that doesn't work, call Comcast and have them reprovision the modem.  If that fails, you will need a tech to come out and have a look at the line or the modem.  Is the modem yours?  If so, have the tech bring a DOCSIS 3 modem with them to try out, it might be your modem is having issues.

Cable Expert
i-am-nerdburg
Posts: 11,230
Registered: ‎06-27-2009

Re: Slow connection in Southern New Hampshire

What Baric said, Sorry, I didn't see that you already posted your levels. 

Contributor
JimmayVV
Posts: 5
Registered: ‎03-07-2012

Re: Slow connection in Southern New Hampshire

pfffft no help with online chat - they just hid behind this mysterious "outage"

 

here's my chat: http://multi.jimmays.com/uploads/XFINITY_Chat.pdf

Recognized Contributor
doombrother
Posts: 85
Registered: ‎12-28-2009

Re: Slow connection in Southern New Hampshire

[ Edited ]

Take matters into your own hands... DEMAND they send a tec out... As long as you are sure there is NOTHING wrong on your side of the connection... (hardware runs correctly no spyware or adware on your system) you wont be billed for the visit... Ultimately that's what I had to do. Now things are fine... Good luck..

 

PS I am in Southern NH too and use the SB6121 modem as well

Networking Expert
Baric
Posts: 24,238
Registered: ‎07-28-2003

Re: Slow connection in Southern New Hampshire

[ Edited ]

Lots of us folks here in Southern New Hampshire.  And I agee, demand (politely) a tech come out and fix the problem.

Contributor
JimmayVV
Posts: 5
Registered: ‎03-07-2012

Re: Slow connection in Southern New Hampshire

whoo-hoo!!!

 

http://stage.results.speedtest.comcast.net/result/125882632.png

 

I was able to get it fixed via the live chat - which I didn't expect:

 

http://multi.jimmays.com/uploads/xfinity-chat2.pdf

 

So fingers crossed it stays that way :-) I was impressed I was able to reset my modem (lose my connection) and still get in touch with the rep again - I was worried there for a minute :-)

 

soooo hopefully I don't need to post here again! Thanks for all your help everyone, I really appreciate the feedback. I'm glad I did the online chat and was able to post the results here for all to see. I'm not sure what Comcast did on their end but I am releived to see it helped, whatever they did.