Visitor
•
2 Messages
MB7621 recently dropped speeds dramatically
I've had my MB7621 working on my 800Mbps plan for a long time without issue. Checking from my Google Wifi router, I have consistently seen 750Mbps/24Mbps speeds. However just recently I've dropped to ~100Mbps/4Mbps. Xfinity support says that checked on their side, walked me through reboot cycles, reset from their side, and everything looks good. My next step is to reach out to Motorola for support (but I've tried calling and was dropped after an hour of hold - will wait for Monday to try again). I don't think there are any splitters; the modem is my sole cable device. I do have a wall plate connector and an L connector; but they've been installed for about a year and haven't caused issues before. I did check and all the cables are tightly fastened and of the compression type.
I'm seeing 24 downstream channels and 4 upstream channels in use (4 not in use, but I've read in other posts that is how Xfinity works). Anything seem out of the ordinary here? Anything I can try in the meantime besides removing the wall plate and L connector? (will give it a shot when the kids aren't watching Disney, which would cause a much bigger problem than slow internet)
--Vin
Device Information
| Cable Specification Version | DOCSIS 3.0 |
| Hardware Version | V1.0 |
| Software Version | 7621-5.7.1.10 |
| CM Certificate | Installed |
| 5.7.1mp4 |
Downstream
| Channel | Lock Status | Modulation | Channel ID | Freq. (MHz) | Pwr (dBmV) | SNR (dB) | Corrected | Uncorrected |
| 1 | Locked | QAM256 | 21 | 573.0 | 4.6 | 40.5 | 0 | 0 |
| 2 | Locked | QAM256 | 1 | 441.0 | 3.5 | 40.6 | 0 | 0 |
| 3 | Locked | QAM256 | 2 | 447.0 | 3.3 | 40.4 | 0 | 0 |
| 4 | Locked | QAM256 | 3 | 453.0 | 3.2 | 40.3 | 0 | 0 |
| 5 | Locked | QAM256 | 4 | 459.0 | 3.3 | 40.3 | 0 | 0 |
| 6 | Locked | QAM256 | 5 | 465.0 | 3.4 | 40.4 | 0 | 0 |
| 7 | Locked | QAM256 | 6 | 471.0 | 3.2 | 40.2 | 0 | 0 |
| 8 | Locked | QAM256 | 7 | 477.0 | 3.3 | 40.4 | 0 | 0 |
| 9 | Locked | QAM256 | 8 | 483.0 | 3.4 | 40.3 | 0 | 0 |
| 10 | Locked | QAM256 | 9 | 489.0 | 3.5 | 40.3 | 0 | 0 |
| 11 | Locked | QAM256 | 10 | 495.0 | 3.3 | 40.2 | 0 | 0 |
| 12 | Locked | QAM256 | 11 | 507.0 | 4.0 | 37.6 | 0 | 0 |
| 13 | Locked | QAM256 | 12 | 513.0 | 4.1 | 40.5 | 0 | 0 |
| 14 | Locked | QAM256 | 13 | 519.0 | 4.3 | 40.6 | 0 | 0 |
| 15 | Locked | QAM256 | 14 | 525.0 | 4.5 | 40.6 | 0 | 0 |
| 16 | Locked | QAM256 | 15 | 531.0 | 4.6 | 40.7 | 0 | 0 |
| 17 | Locked | QAM256 | 16 | 537.0 | 3.2 | 41.4 | 0 | 0 |
| 18 | Locked | QAM256 | 17 | 543.0 | 3.1 | 41.8 | 0 | 0 |
| 19 | Locked | QAM256 | 18 | 549.0 | 3.0 | 41.6 | 0 | 0 |
| 20 | Locked | QAM256 | 19 | 561.0 | 3.4 | 41.8 | 0 | 0 |
| 21 | Locked | QAM256 | 20 | 567.0 | 3.1 | 41.8 | 0 | 0 |
| 22 | Locked | QAM256 | 22 | 579.0 | 3.3 | 41.9 | 0 | 0 |
| 23 | Locked | QAM256 | 23 | 585.0 | 3.1 | 41.9 | 0 | 0 |
| 24 | Locked | QAM256 | 24 | 591.0 | 2.9 | 41.9 | 0 | 0 |
| Total | 0 |
0 |
Upstream
| Channel | Lock Status | Channel Type | Channel ID | Symb. Rate (Ksym/sec) | Freq. (MHz) | Pwr (dBmV) |
| 1 | Locked | ATDMA | 2 | 5120 | 22.8 | 44.0 |
| 2 | Locked | ATDMA | 1 | 5120 | 16.4 | 44.0 |
| 3 | Locked | ATDMA | 3 | 5120 | 29.2 | 44.0 |
| 4 | Locked | ATDMA | 4 | 5120 | 35.6 | 44.0 |
| 5 | Not Locked | Unknown | 0 | 0 | 0 | 0.0 |
| 6 | Not Locked | Unknown | 0 | 0 | 0 | 0.0 |
| 7 | Not Locked | Unknown | 0 | 0 | 0 | 0.0 |
| 8 | Not Locked | Unknown | 0 | 0 | 0 | 0.0 |
Status
| Acquire Downstream Channel | Locked | |
| Upstream Connection | OK | Operational |
| Boot State | OK | Operational |
| Configuration File | OK | |
| Security | Enabled | BPI+ |
| System Up Time | 0 days 00h:21m:34s |
| Network Access | Allowed |
Errors from a reboot that resulted in a failed connection (another reboot resolved)
| Time | Priority | Description |
| Time Not Established | Critical (3) | No Ranging Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | DHCP failed - DHCP Solicit sent, No DHCP Advertise received;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | No UCDs Received - Timeout;;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | No UCDs Received - Timeout;;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | TFTP Failed - OUT OF ORDER packets;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | TFTP Request Retries exceeded, CM unable to register |
| Time Not Established | Critical (3) | SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | No Ranging Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | DHCP failed - DHCP Solicit sent, No DHCP Advertise received;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | No UCDs Received - Timeout;;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | TFTP failed - Request sent - No Response;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | TFTP Request Retries exceeded, CM unable to register |
| Time Not Established | Critical (3) | No Ranging Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | DHCP failed - DHCP Solicit sent, No DHCP Advertise received;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | No UCDs Received - Timeout;;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | TFTP Request Retries exceeded, CM unable to register |
| Time Not Established | Critical (3) | No Ranging Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Notice (6) | Honoring MDD; IP provisioning mode = IPv6 |
| Time Not Established | Warning (5) | ToD request sent - No Response received;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | TFTP failed - Request sent - No Response;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | TFTP Request Retries exceeded, CM unable to register |
| Time Not Established | Warning (5) | ToD request sent - No Response received;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | No Ranging Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Notice (6) | Honoring MDD; IP provisioning mode = IPv6 |
| Time Not Established | Critical (3) | DHCP failed - DHCP Solicit sent, No DHCP Advertise received;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Critical (3) | No Ranging Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established | Notice (6) | Honoring MDD; IP provisioning mode = IPv6 |
| Time Not Established | Warning (5) | ToD request sent - No Response received;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.0;CM-VER=3.0; |
No Responses!