New Contributor II
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11 Messages
Connection speeds are bouncing all over
Something has happened the last week and I am stuck. I have the Premier package and would regularly use speedtest to check the connection on my ipad. Download speeds always were in the 25-40 mb range. All of a sudden started having a problem. My speed levels are flucuating like mad, usually downward. See it at night when streaming tv is constantly buffering. At 7:15 this morning same thing. Ihad gone into my modem, a Netgear WNDR3700 and checked settings. I contact Zoom about my 6 month old modem. It is Zoom 5341. I have provided a screenshot from this morning. They told me that the controllables/uncontrollables were way out of line. Having read some of this forum, I did some speed test this morning. I ran the test on my wired pc and my wireless ipad at the same time. First test result wired download 4.78mb --- wireless 1.70mb. I then ran the test immediately again. this time wired download 9.76mb wireless 27.81mb. The wireless blew away the wired. Again, these tests were going on at the exact same time. Looking for answers. Nothing has changed the on my end the last two weeks, same equipment, same usage etc.. Why all of a sudden the problem
Connection
This page displays information on the status of the cable modem's HFC and IP network connectivity.
Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 939000000 Hz Locked
Connectivity State OK Operational
Boot State
Configuration File OK
Security Enabled BPI+
Downstream Bonded Channels
Channel Modulation Frequency Power SNR Correctables Uncorrectables
1 QAM256 939000000 Hz -4.7 dBmV 34.9 dB 147 193
2 QAM256 909000000 Hz -6.5 dBmV 35.9 dB 38 21
3 QAM256 915000000 Hz -4.7 dBmV 37.1 dB 81 58
4 QAM256 921000000 Hz -6.0 dBmV 35.7 dB 198 87
5 QAM256 927000000 Hz -7.6 dBmV 34.1 dB 273 94
6 unknown 933000000 Hz -7.0 dBmV 23.2 dB 56416 168736
7 QAM256 945000000 Hz -3.0 dBmV 36.3 dB 50 62
8 QAM256 951000000 Hz -2.3 dBmV 36.8 dB 19 55
Total Correctables Total Uncorrectables
57222 169306
Upstream Bonded Channels
Channel US Channel Type Symbol Rate Frequency Power
1 ATDMA 5120 Ksym/sec 37104000 Hz 42.0 dBmV
2 ATDMA 5120 Ksym/sec 30704000 Hz 40.8 dBmV
3 ATDMA 5120 Ksym/sec 23696000 Hz 40.3 dBmV
4 TDMA and ATDMA 2560 Ksym/sec 18896000 Hz 40.5 dBmV
CM IP Address
10.1.0.184
Current System Time: Fri Oct 21 07:19:24 2016
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grymwulf
Contributor II
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319 Messages
There definitely seems to be a problem on one of the channels where the SNR is 23.2 dB - with severe frame corruption. Try power cycling the modem to see if it can try to avoid the 933MHz frequency. Check your connections/cables - reseat all connections, make sure there is no build-up on any of them. If you have a splitter, try bypassing it. Check where the cable comes into the building, etc.
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force113
New Contributor
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40 Messages
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grymwulf
Contributor II
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319 Messages
Bah text overload - I'm not even going to try to interpret that. If you are on premier, my recommendations above stand - check your cables, try it on wired etc.
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mikar59
New Contributor II
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11 Messages
Although I have reset my modem several times, I will take off all the connections, reinsert them and try again. I will also put a new coax cable on. I have no splitters. What might I be looking at on the outside of the building? As a FYI, that channel 6 "unknown", I am almost positive I saw the SNR earlier at "0" when I got a speedtest result of .88 mb, yes under 1. Sent me off on a internet search of what SNR stood for. This morning it was back to what I posted. I just check now when I got home and SNR at 32.8 and download speed at 61mb. Is the SNR supposed to jump al over like that? Seems to coincide with the poor performance. Oh, since this morning when I took the screenshot, I know have 227,000 uncotrollables on that same channel. Thanks for any input you can provide
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ChrisL
Former Moderator
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7.1K Messages
In your case I suspect the issue is a modem not capable of delivering consistent speeds at that level. I'd suggest upgrading to a modem with minimum 8x downstream channels.
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ChrisL
Former Moderator
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7.1K Messages
If none of that helps it may be time to see about having a tech come out and troubleshoot further.
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