Contributor
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21 Messages
Connectivity Issue - intermittent drops. Please help!
Hello,
I'm running into an issue with my home network where the connection drops randomly and is down for 1-2 minutes then comes back up. I have not been able to resolve this issue unfortunately and it is very frustrating.
Plan: 400 mbps
Downstream speed: 470 mbps
Upstream: 25 mbps
Equipment: CM600, Nest Wifi
In MS Event Viewer, it says something about DHCP renewal lease issue, but I don't know if this is a red herring or not.
Any help is appreciated. When I called tech support they said the CM600 is not rated beyond 250 mbs, but on the product page it in fact says it is rated up to 500 mbps. "Support Cable Internet Service plans up to 300Mbps. Recommended for all speed tiers up to 500 Mbps. Separate router required for WiFi. 24x8 channel bonding"
Modem statistics:
| Apply Cancel | |
| Frequency start Value | |
| This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect. | |
|
Startup Procedure
| Procedure | Status | Comment |
| Acquire Downstream Channel | 525000000 Hz | Locked |
| Connectivity State | OK | Operational |
| Boot State | OK | Operational |
| Security | Enable | BPI+ |
| IP Provisioning Mode | Honor MDD | IPv6 only |
| Channel | Lock Status | Modulation | Channel ID | Frequency | Power | SNR | Correctables | Uncorrectables |
| 1 | Locked | QAM256 | 9 | 525000000 Hz | 9.2 dBmV | 38.7 dB | 24 | 0 |
| 2 | Locked | QAM256 | 10 | 531000000 Hz | 9.0 dBmV | 38.7 dB | 21 | 0 |
| 3 | Locked | QAM256 | 11 | 537000000 Hz | 8.8 dBmV | 38.6 dB | 25 | 0 |
| 4 | Locked | QAM256 | 12 | 543000000 Hz | 9.0 dBmV | 38.7 dB | 22 | 0 |
| 5 | Locked | QAM256 | 13 | 555000000 Hz | 8.8 dBmV | 38.5 dB | 28 | 0 |
| 6 | Locked | QAM256 | 14 | 561000000 Hz | 9.1 dBmV | 38.6 dB | 19 | 0 |
| 7 | Locked | QAM256 | 15 | 567000000 Hz | 8.7 dBmV | 38.5 dB | 27 | 0 |
| 8 | Locked | QAM256 | 16 | 573000000 Hz | 9.1 dBmV | 38.6 dB | 30 | 0 |
| 9 | Locked | QAM256 | 17 | 579000000 Hz | 8.9 dBmV | 38.5 dB | 18 | 0 |
| 10 | Locked | QAM256 | 18 | 585000000 Hz | 8.9 dBmV | 38.4 dB | 32 | 0 |
| 11 | Locked | QAM256 | 19 | 591000000 Hz | 8.4 dBmV | 38.2 dB | 38 | 0 |
| 12 | Locked | QAM256 | 20 | 597000000 Hz | 8.7 dBmV | 38.3 dB | 36 | 0 |
| 13 | Locked | QAM256 | 21 | 603000000 Hz | 8.3 dBmV | 38.2 dB | 31 | 0 |
| 14 | Locked | QAM256 | 22 | 609000000 Hz | 8.7 dBmV | 38.3 dB | 27 | 0 |
| 15 | Locked | QAM256 | 23 | 615000000 Hz | 8.7 dBmV | 38.2 dB | 26 | 0 |
| 16 | Locked | QAM256 | 24 | 621000000 Hz | 8.6 dBmV | 38.0 dB | 43 | 0 |
| 17 | Locked | QAM256 | 25 | 627000000 Hz | 7.8 dBmV | 38.5 dB | 0 | 0 |
| 18 | Locked | QAM256 | 26 | 633000000 Hz | 7.6 dBmV | 38.3 dB | 0 | 0 |
| 19 | Locked | QAM256 | 27 | 639000000 Hz | 7.4 dBmV | 38.3 dB | 0 | 0 |
| 20 | Locked | QAM256 | 28 | 645000000 Hz | 7.0 dBmV | 38.2 dB | 0 | 0 |
| 21 | Locked | QAM256 | 29 | 651000000 Hz | 7.2 dBmV | 38.2 dB | 0 | 0 |
| 22 | Locked | QAM256 | 31 | 657000000 Hz | 6.5 dBmV | 37.8 dB | 0 | 0 |
| 23 | Locked | QAM256 | 32 | 663000000 Hz | 6.6 dBmV | 37.9 dB | 0 | 0 |
| 24 | Locked | QAM256 | 33 | 669000000 Hz | 6.6 dBmV | 37.8 dB | 0 | 0 |
| Channel | Lock Status | US Channel Type | Channel ID | Symbol Rate | Frequency | Power |
| 1 | Locked | ATDMA | 2 | 5120 Ksym/sec | 29200000 Hz | 30.5 dBmV |
| 2 | Locked | ATDMA | 1 | 5120 Ksym/sec | 35600000 Hz | 30.8 dBmV |
| 3 | Locked | ATDMA | 3 | 5120 Ksym/sec | 22800000 Hz | 31.0 dBmV |
| 4 | Locked | ATDMA | 4 | 5120 Ksym/sec | 16400000 Hz | 30.3 dBmV |
| 5 | Locked | ATDMA | 9 | 1280 Ksym/sec | 39600000 Hz | 30.3 dBmV |
| 6 | Not Locked | Unknown | 0 | 0 Ksym/sec | 0 Hz | 0.0 dBmV |
| 7 | Not Locked | Unknown | 0 | 0 Ksym/sec | 0 Hz | 0.0 dBmV |
| 8 | Not Locked | Unknown | 0 | 0 Ksym/sec | 0 Hz | 0.0 dBmV |
EG
Expert
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111.4K Messages
4 years ago
FWIW, Comcast rates the CM600 for up to 959 Mbps;
https://www.xfinity.com/support/devices#details
For a test, does a computer / device hardwired directly to the CM600 cable modem with an ethernet cable have the same problem ?
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sector281
Contributor
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21 Messages
4 years ago
It's a good question. I'll try hardwiring the desktop directly to modem, bypassing the router to see if the issue persists. My hunch is it will persist since I doubt it is a router issue. I'll try it out and will reply back here.
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