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Re: Switched from CM3000 to CAX80 and it destroyed upload/download speeds
Hi all. I too am having issues getting the downstream fully bonded, however I am on Cox. The demarcation line from teh street comes directly into my smart box. The dmark line has a MOCA filter th...
You might find some ideas here:
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
So.....I went direct from CM3000 to my laptop and this was the result. Bypassing my router (with it completely powered off).
Looks like interference from the router??? Is this a thing?
Downstream Status: Good
Downstream Power Level: Good
Downstream SNR Level: Good
Upstream Status: Good
Upstream Power Level: Good
Current Time: Mon May 05 15:41:17 2025
Startup Procedure
Acquire Downstream Channel: 855000000 Hz Locked
Connectivity State: OK Operational
Boot State: OK Operational
Security: Enabled BPI+
IP Provisioning Mode: Honor MDD IPv4 only
Downstream Bonded Channels
Channel LockedStatus Modulation ChannelID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 21 855000000 Hz 5.5 43.3 0 0
2 Locked QAM256 5 759000000 Hz 5 43.6 0 0
3 Locked QAM256 6 765000000 Hz 5 43.6 0 0
4 Locked QAM256 7 771000000 Hz 4.9 43.6 0 0
5 Locked QAM256 8 777000000 Hz 5 43.6 0 0
6 Locked QAM256 13 807000000 Hz 5.4 43.6 0 0
7 Locked QAM256 17 831000000 Hz 5.6 43.4 0 0
8 Locked QAM256 18 837000000 Hz 5.6 43.5 0 0
9 Locked QAM256 19 843000000 Hz 5.7 43.4 0 0
10 Locked QAM256 25 117000000 Hz -2.5 39.3 0 0
11 Locked QAM256 26 123000000 Hz -2.5 39.4 0 0
12 Locked QAM256 27 129000000 Hz -2.5 39.6 0 0
13 Locked QAM256 28 135000000 Hz -2.9 39.8 0 0
14 Locked QAM256 29 141000000 Hz -3 39.9 0 0
15 Locked QAM256 30 147000000 Hz -3 39.7 0 0
16 Locked QAM256 31 153000000 Hz -2.5 39.8 0 0
17 Locked QAM256 32 159000000 Hz -2.1 39.7 0 0
18 Locked QAM256 33 165000000 Hz -1.7 39.8 0 0
19 Locked QAM256 34 171000000 Hz -1.4 40 0 0
20 Locked QAM256 35 177000000 Hz -1.2 40.2 0 0
21 Locked QAM256 36 183000000 Hz -1 40.6 0 0
22 Locked QAM256 38 195000000 Hz -0.5 41.2 0 0
23 Locked QAM256 39 201000000 Hz -0.1 41.7 0 0
24 Locked QAM256 40 207000000 Hz 0.3 42 0 0
25 Locked QAM256 41 213000000 Hz 0.5 42.2 0 0
26 Locked QAM256 42 219000000 Hz 0.7 42.4 0 0
27 Locked QAM256 43 225000000 Hz 0.8 42.5 0 0
28 Locked QAM256 44 231000000 Hz 0.9 42.6 0 0
29 Locked QAM256 45 237000000 Hz 0.8 42.5 0 0
30 Locked QAM256 46 243000000 Hz 0.8 42.4 0 0
31 Locked QAM256 47 249000000 Hz 0.5 42.3 0 0
32 Locked QAM256 48 255000000 Hz 0.6 42.2 0 0
Upstream Bonded Channels
Channel LockedStatus ChannelType ChannelID SymbolRate Frequency Power
1 Locked ATDMA 4 5120 Ksym/sec 16900000 Hz 41.8 dBmV
2 Locked ATDMA 1 5120 Ksym/sec 36300000 Hz 43.3 dBmV
3 Locked ATDMA 2 5120 Ksym/sec 29900000 Hz 42.8 dBmV
4 Locked ATDMA 3 5120 Ksym/sec 23500000 Hz 42.3 dBmV
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
Downstream OFDM Channels
Channel LockedStatus ProfileID ChannelID Frequency Power SNR/MER ActiveSubcarrier Unerror Correctable Uncorrectable
1 Locked 0 ,1 ,2 ,3 159 300000000 Hz 1.68 dBmV 42.1 dB 296 ~ 7895 31250233 6234728 0
2 Locked 0 ,1 ,2 ,3 160 918000000 Hz 5.28 dBmV 42.5 dB 2216 ~ 5975 15494481 4274754 0
Upstream OFDMA Channels
Channel LockedStatus ProfileID ChannelID Frequency Power
1 Locked 9 ,13 6 36800000 Hz 38.0 dBmV
2 Not Locked 0 0 0 Hz 0 dBmV
Ya correctables and un-correctables are zeros now for those channels that had those before.
How many hours of system uptime had elapsed when you collected this data set?
The correctable/uncorrectable readings reset to zero when you boot your modem. If your system had only been up for a short time when you collected this data, the zero values do not mean anything.
That is why it is important to include the last two lines when you collect your data set. They show actual time and system up time.
- Ah that's why lmao! Was only on for a few minutes. However, as soon as I powered up the router, the modem immediately went unlocked and the downstream became unbonded. Can confirm that this happens every single time the modem is on by itself and the router is off. Once the router comes on, modem becomes unbonded. I've done it 10 times.
What brand and model router are you connecting the CM modem?
- Ubiquity AmpliFi Alien
