3 Messages
Extremely Unreliable Internet (1200Mbps subscriber getting 10Mbps!)
Hello - For the first 2 years moving into this house, I never had issues with my internet however starting around the middle of this year, I suddenly started having extremely unreliable internet. I am subscribed to the 1200Mbps package yet I am seeing speeds anywhere from 10Mbps to 60Mbps connecting directly via ethernet to my laptop (normally I use a Google Nest router). At times it seems like I'm getting disconnected and it becomes unusable. My original modem worked great for the first 2 years (Motorola MB8611) but after the issues started without changing anything in my house, I purchased an Arris S33 but the problems continued. I've had numerous calls to Xfinity and one tech out a couple months ago, which he said he replaced a cable outside but the problems have persisted. Xfinity suggested calling the modem manufacturer, which I just did today and they're telling me the signals are not in spec at all and its Xfinity's issue. I am waiting for another follow up text from Xfinity to see if they'll send another tech but wanted to see what folks on here thought of my modem logs below. Any help is appreciated. Thanks!
| Downstream Bonded Channels | |||||||
|---|---|---|---|---|---|---|---|
| Channel ID | Lock Status | Modulation | Frequency | Power | SNR/MER | Corrected | Uncorrectables |
| 20 | Locked | QAM256 | 543000000 Hz | -13 dBmV | 36 dB | 205150 | 103104 |
| 13 | Locked | QAM256 | 501000000 Hz | -11 dBmV | 38 dB | 0 | 0 |
| 14 | Locked | QAM256 | 507000000 Hz | -10 dBmV | 39 dB | 0 | 0 |
| 15 | Locked | QAM256 | 513000000 Hz | -10 dBmV | 39 dB | 0 | 0 |
| 16 | Locked | QAM256 | 519000000 Hz | -10 dBmV | 39 dB | 0 | 0 |
| 17 | Locked | QAM256 | 525000000 Hz | -10 dBmV | 39 dB | 0 | 0 |
| 18 | Locked | QAM256 | 531000000 Hz | -12 dBmV | 38 dB | 0 | 0 |
| 19 | Locked | QAM256 | 537000000 Hz | -12 dBmV | 38 dB | 0 | 0 |
| 21 | Locked | QAM256 | 549000000 Hz | -15 dBmV | 35 dB | 2 | 0 |
| 22 | Locked | QAM256 | 555000000 Hz | -15 dBmV | 35 dB | 0 | 0 |
| 23 | Locked | QAM256 | 561000000 Hz | -17 dBmV | 33 dB | 0 | 0 |
| 24 | Locked | QAM256 | 567000000 Hz | -16 dBmV | 33 dB | 0 | 0 |
| 25 | Locked | QAM256 | 573000000 Hz | -17 dBmV | 33 dB | 1 | 0 |
| 26 | Locked | QAM256 | 579000000 Hz | -18 dBmV | 32 dB | 1 | 0 |
| 27 | Locked | QAM256 | 585000000 Hz | -17 dBmV | 33 dB | 0 | 0 |
| 28 | Locked | QAM256 | 591000000 Hz | -18 dBmV | 32 dB | 0 | 0 |
| 29 | Locked | QAM256 | 597000000 Hz | -17 dBmV | 33 dB | 2 | 0 |
| 30 | Locked | QAM256 | 603000000 Hz | -17 dBmV | 33 dB | 0 | 0 |
| 31 | Locked | QAM256 | 609000000 Hz | -18 dBmV | 32 dB | 1 | 0 |
| 32 | Locked | QAM256 | 615000000 Hz | -18 dBmV | 32 dB | 0 | 0 |
| 33 | Locked | QAM256 | 621000000 Hz | -21 dBmV | 29 dB | 12940 | 0 |
| 34 | Locked | QAM256 | 627000000 Hz | -22 dBmV | 28 dB | 473563 | 0 |
| 35 | Locked | QAM256 | 633000000 Hz | -23 dBmV | 27 dB | 8286823 | 681 |
| 37 | Locked | QAM256 | 645000000 Hz | -25 dBmV | 26 dB | 67011587 | 85000239 |
| Upstream Bonded Channels | ||||||
|---|---|---|---|---|---|---|
| Channel ID | Lock Status | US Channel Type | Frequency | Width | Power | |
| 1 | Locked | SC-QAM | 16400000 Hz | 6400000 | 46.3 dBmV | |
| 2 | Locked | SC-QAM | 22800000 Hz | 6400000 | 46.8 dBmV | |
| 3 | Locked | SC-QAM | 29200000 Hz | 6400000 | 47.0 dBmV | |
| 4 | Locked | SC-QAM | 35600000 Hz | 6400000 | 47.0 dBmV | |
LOG:
18:00:16 3 CMSTATUS:US_Diplexer_Mode_Change:Init, 5-42MHz.
31/12/1969
18:00:21 3 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
31/12/1969
18:00:23 3 CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-21.2, 258MHz.
31/12/1969
18:00:23 3 CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-21.3, 1002MHz.
31/12/1969
18:00:23 3 CMSTATUS:US_Diplexer_Mode_Change:TLV-21.1, 5-85MHz.
31/12/1969
18:00:37 3 CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.
31/12/1969
18:00:37 3 CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.
6/11/2023
22:30:59 3 CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.
6/11/2023
22:31:12 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
6/11/2023
22:41:13 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
00:57:12 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
01:07:14 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
01:27:16 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
01:57:27 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
02:17:29 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
02:37:31 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
02:47:32 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
02:57:33 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
03:07:35 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
03:17:37 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
03:37:39 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
03:47:39 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
03:57:41 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
04:07:42 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
04:17:43 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
04:37:45 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
04:47:46 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
04:57:48 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
05:17:49 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
05:27:50 3 UCD invalid or channel unusable;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
07:00:46 3 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
07:00:58 3 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
07:01:01 3 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
07:01:10 3 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
07:01:16 3 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
07:02:10 3 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=REMOVED;CMTS-MAC=REMOVED;CM-QOS=1.1;CM-VER=3.1;
7/11/2023
07:02:17 3 CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-21.2, 258MHz.
7/11/2023
07:02:17 3 CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-21.3, 1002MHz.
7/11/2023
07:02:18 3 CMSTATUS:US_Diplexer_Mode_Change:TLV-21.1, 5-85MHz.
7/11/2023
07:02:31 3 CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.
7/11/2023
07:02:31 3 CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.
7/11/2023
07:02:33 3 CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.
No Responses!