dragon-it
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Re: Slow downloads - since recent down time
Thanks all for the advice there and the engineer that arrived sorted it out. Couldn't find any errors or issues at our end externally or internally but his report was intermittent upload (which has actually been solid 100). This has only been in about 6-8 months but he found a broken cable in the cabinet where the coax was half coming out of the plug and snapped the central wire so a poor termination originally and intermittent, or snagged when someone else in the box I guess. Anyway after a couple of hours still all errors at 0 and everything nice and level, never seen that for several months. So issue closed hopefully.1.1KViews0likes1CommentRe: Slow downloads - since recent down time
After around 2 hours getting this on downstream (sorry didn't respond to earlier response from last week, found alerts going into spam filter). Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors 1 Locked 37 46975 1557 2 Locked 31 27399077 1098 3 Locked 28 107288684 350390 4 Locked 30 10035844 26366 5 Locked 30 89820418 59649 6 Locked 29 113816542 2607215 7 Locked 29 109961830 11767564 8 Locked 29 116558496 142617 9 Locked 31 33923168 4083 10 Locked 35 857 49194 11 Locked 34 36709 57564 12 Locked 37 3757 54856 13 Locked 37 9855 49665 14 Locked 37 18269 42753 15 Locked 37 27286 34306 16 Locked 36 31869 29184 17 Locked 36 35283 27143 18 Locked 35 43669836 47595 19 Locked 36 616571 55960 20 Locked 36 13005 56011 21 Locked 34 18952 63950 22 Locked 37 24025 50381 23 Locked 37 32761 42837 24 Locked 36 38292 45667 25 Locked 38 46133 4145 26 Locked 38 48192 6184 27 Locked 37 42776 1391 28 Locked 36 51832 3185 29 Locked 37 45361 1366 30 Locked 37 49778 2465 .1 Downstream channels Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz) 159 94 4K 1840 QAM 4096 1108 3.1 Downstream channels Channel ID Locked Status RxMER Data (dB) PLC Power (dBmV) Corrected errors (Active Profile) Uncorrectable errors (Active Profile) 159 Locked 39 -19.1 118514838 6099 and upstream is solid, no errors. 3.0 Upstream channels Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID 0 49600000 46 5120 QAM 64 9 1 43100000 46.3 5120 QAM 64 10 2 36600000 48.3 5120 QAM 64 11 3 30100000 51.3 5120 QAM 64 12 4 23600000 55 5120 QAM 64 13 3.0 Upstream channels Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts 0 ATDMA 0 2 1 1 1 ATDMA 0 2 0 0 2 ATDMA 0 2 0 0 3 ATDMA 0 2 0 0 4 ATDMA 0 2 0 0 3.1 Upstream channels Channel Channel Width (MHz) Power (dBmV) FFT Type Modulation 14 10 40.0 2K QAM 256 3.1 Upstream channels Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts 14 OFDMA 200 74000000 0 01.1KViews0likes0CommentsRe: Slow downloads - since recent down time
Thank you. I have had a tech visit appointment appear on my phone as happening tomorrow (I didn't ask for it but this must have triggered it so good!). I tried it again today with 3dB attenuator and was getting around 40Mbits, getting 500+ from ethernet connection at the moment. Confirm the router totals were 0 but soon ramped up on same channels as before. Both ends of internal cabling are connected normally. thanks Steve1.1KViews0likes0CommentsSlow downloads - since recent down time
After a bit of advice please before contacting VM, I'm more familiar with business networking and fibre and not dabbled into VM cable until had enough of the best we could get with VDSL. VM 1gig service. Has never been solid 1000 but has been pretty good (and better than the 50/13 could get with VDSL). We moved the router recently to a new location using second cable the installer gave us but the speed continued to be the same at the new location and everything is securely connected. We have had some slow(er) speed issues, my PC typically tops out around 250Mbit wired, and a mobile just now was getting 150Mbit tops while synced at 1100Mbit to the router and standing next to it. I have had upto 550Mbits in the last week. Virgin own speed test https://www.virginmedia.com/broadband/speed-test currently reports Latency: 12.7 ms Jitter: 1.90 ms Download: 159 Mbps Upload: 97.1 Mbps Last week I think the issues started then later in the week we had around 24 hours without any service after a fault in the area affecting multiple people. The router now sync 30 x DOCSIS 3.0 channels. Most of those look reasonable but there is a section which have large error rates, low power and SNR I didn't look before these issues at what was there to know if that is "normal" and the router works around the dodgy channels and still gets full speed? The router originally connected with a 2m or so cable and had a 3dB attenuator connected next to it. The replacement cable to move the router centrally is around 5-6m and originally still with the attenuator and currently trying without. thanks Steve 3.0 Downstream channels Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID 1 419000000 3.8 37 QAM 256 36 2 139000000 6.6 31 QAM 256 1 3 147000000 6.6 31 QAM 256 2 4 155000000 5.1 30 QAM 256 3 5 163000000 2.6 29 QAM 256 4 6 171000000 1.2 29 QAM 256 5 7 179000000 -2 28 QAM 256 6 8 203000000 -2.6 29 QAM 256 9 9 227000000 3.3 34 QAM 256 12 10 235000000 4.3 36 QAM 256 13 11 259000000 5.6 36 QAM 256 16 12 267000000 5.7 36 QAM 256 17 13 275000000 5.8 36 QAM 256 18 14 283000000 5.2 36 QAM 256 19 15 291000000 3.7 35 QAM 256 20 16 299000000 3.9 34 QAM 256 21 17 307000000 3.4 33 QAM 256 22 18 315000000 3.2 36 QAM 256 23 19 323000000 3.6 36 QAM 256 24 20 331000000 3.2 36 QAM 256 25 21 339000000 3.7 36 QAM 256 26 22 347000000 4.4 36 QAM 256 27 23 355000000 4.7 37 QAM 256 28 24 363000000 4.3 37 QAM 256 29 25 371000000 4.1 36 QAM 256 30 26 379000000 4.2 36 QAM 256 31 27 387000000 4.2 36 QAM 256 32 28 395000000 4.3 36 QAM 256 33 29 403000000 4 37 QAM 256 34 30 411000000 3.6 37 QAM 256 35 3.0 Downstream channels Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors 1 Locked 37 5743 2747 2 Locked 31 528445609 4448 3 Locked 31 1588041078 23295998 4 Locked 30 427309553 7062 5 Locked 29 2862024815 2468021 6 Locked 29 4124190092 312578574 7 Locked 28 4268586652 1070949178 8 Locked 29 3336012267 34452317 9 Locked 34 689644 6968 10 Locked 36 11804 3778 11 Locked 36 9186 3522 12 Locked 36 7713 3596 13 Locked 36 5518 3109 14 Locked 36 1255716585 177857 15 Locked 35 183471480 2494 16 Locked 34 14046 2147 17 Locked 33 59438 1771 18 Locked 36 14843 2213 19 Locked 36 11213 1880 20 Locked 36 18373 2238 21 Locked 36 14836 3426 22 Locked 36 16944 2062 23 Locked 37 5332 2553 24 Locked 37 5488 1869 25 Locked 36 5027 1378 26 Locked 36 6166 3210 27 Locked 36 5383 3155 28 Locked 36 9551 3521 29 Locked 37 4655 2960 30 Locked 37 5851 2768 3.1 Downstream channels Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz) 159 94 4K 1840 QAM 4096 1108 3.1 Downstream channels Channel ID Locked Status RxMER Data (dB) PLC Power (dBmV) Corrected errors (Active Profile) Uncorrectable errors (Active Profile) 159 Locked 39 2.7 884170157 72899Solved1.3KViews0likes7Comments