Intermittent issue causing slow download speeds
Hey VM community.
There's a long running issue in my area that is progressively getting worse with it now occurring multiple times a day for extended periods. It looks to be a noise issue with SNR on some channels occasionally dropping to 0.
Weirdly enough it only affects download speeds and latency.
I'm IT inclined and have tried the usual troubleshooting but this looks to be something a VM engineer will have to resolve.
Gig1.
Hub5.
Modem Mode.
Here's a speedtest showing the issue.
My BQM for today.
Modem Stats:
Modem was restarted 30 mins before these readings.
Cable Modem StatusItem Status TypeChannel Overview Downstream Upstream
Cable Modem Status | Online | DOCSIS 3.0 |
Primary downstream channel | Locked | SC-QAM |
DOCSIS 3.0 channels | 30 | 5 |
DOCSIS 3.1 channels | 1 | 1 |
3.0 Downstream channels
1 | 611000000 | -7.8 | 34 | QAM 256 | 32 |
2 | 387000000 | -8.3 | 27 | QAM 256 | 4 |
3 | 419000000 | -8 | 31 | QAM 256 | 8 |
4 | 427000000 | -7.8 | 28 | QAM 256 | 9 |
5 | 451000000 | -8.3 | 34 | QAM 256 | 12 |
6 | 459000000 | -8.5 | 33 | QAM 256 | 13 |
7 | 483000000 | -8.6 | 33 | QAM 256 | 16 |
8 | 491000000 | -8.7 | 32 | QAM 256 | 17 |
9 | 515000000 | -8.7 | 32 | QAM 256 | 20 |
10 | 523000000 | -8.4 | 32 | QAM 256 | 21 |
11 | 547000000 | -7.6 | 31 | QAM 256 | 24 |
12 | 555000000 | -7.2 | 32 | QAM 256 | 25 |
13 | 579000000 | -7.1 | 33 | QAM 256 | 28 |
14 | 587000000 | -7.2 | 34 | QAM 256 | 29 |
15 | 603000000 | -7.7 | 35 | QAM 256 | 31 |
16 | 619000000 | -7.8 | 33 | QAM 256 | 33 |
17 | 627000000 | -7.9 | 35 | QAM 256 | 34 |
18 | 635000000 | -8.3 | 35 | QAM 256 | 35 |
19 | 643000000 | -8.4 | 34 | QAM 256 | 36 |
20 | 651000000 | -8.5 | 34 | QAM 256 | 37 |
21 | 659000000 | -8.4 | 34 | QAM 256 | 38 |
22 | 667000000 | -8.5 | 34 | QAM 256 | 39 |
23 | 675000000 | -8.5 | 34 | QAM 256 | 40 |
24 | 683000000 | -8.1 | 35 | QAM 256 | 41 |
25 | 691000000 | -8.7 | 34 | QAM 256 | 42 |
26 | 699000000 | -8.9 | 34 | QAM 256 | 43 |
27 | 707000000 | -8.8 | 35 | QAM 256 | 44 |
28 | 715000000 | -8.9 | 34 | QAM 256 | 45 |
29 | 723000000 | -9.2 | 35 | QAM 256 | 46 |
30 | 731000000 | -9.6 | 34 | QAM 256 | 47 |
3.0 Downstream channels
1 | Locked | 34 | 34950 | 0 |
2 | Locked | 27 | 61932464 | 6231823 |
3 | Locked | 31 | 3899618 | 0 |
4 | Locked | 28 | 66176698 | 676589 |
5 | Locked | 34 | 5001343 | 64 |
6 | Locked | 33 | 14276929 | 508 |
7 | Locked | 33 | 100962 | 0 |
8 | Locked | 32 | 541764 | 0 |
9 | Locked | 32 | 434429 | 0 |
10 | Locked | 32 | 2930016 | 4 |
11 | Locked | 31 | 3918411 | 51 |
12 | Locked | 32 | 316758 | 16 |
13 | Locked | 33 | 89525 | 0 |
14 | Locked | 34 | 9992 | 0 |
15 | Locked | 35 | 5235 | 0 |
16 | Locked | 33 | 79490 | 0 |
17 | Locked | 35 | 2140 | 0 |
18 | Locked | 35 | 1828 | 0 |
19 | Locked | 34 | 3610 | 0 |
20 | Locked | 34 | 3235 | 0 |
21 | Locked | 34 | 4499 | 0 |
22 | Locked | 34 | 18789 | 0 |
23 | Locked | 34 | 11354 | 0 |
24 | Locked | 35 | 2622 | 0 |
25 | Locked | 34 | 7266 | 0 |
26 | Locked | 34 | 7286 | 0 |
27 | Locked | 35 | 4218 | 0 |
28 | Locked | 34 | 8111 | 433 |
29 | Locked | 35 | 4441 | 1887 |
30 | Locked | 34 | 5141 | 0 |
3.1 Downstream channels
159 | 190 | 4K | 3736 | QAM 4096 | 148 |
3.1 Downstream channels
159 | Locked | 34 | -11.1 | 61465322 | 27634850 |
3.0 Upstream channels
0 | 49600000 | 55.3 | 5120 | QAM 64 | 1 |
1 | 43100000 | 54.8 | 5120 | QAM 64 | 2 |
2 | 36600000 | 54.5 | 5120 | QAM 64 | 3 |
3 | 30100000 | 54.3 | 5120 | QAM 64 | 4 |
4 | 23600000 | 53.3 | 5120 | QAM 64 | 5 |
3.0 Upstream channels
0 | ATDMA | 0 | 0 | 0 | 0 |
1 | ATDMA | 0 | 0 | 0 | 0 |
2 | ATDMA | 0 | 0 | 4 | 0 |
3 | ATDMA | 0 | 0 | 0 | 0 |
4 | ATDMA | 0 | 0 | 0 | 0 |
3.1 Upstream channels
6 | 10 | 49.0 | 2K | QAM 256 |
3.1 Upstream channels
6 | OFDMA | 200 | 74000000 | 0 | 0 |