There are potential DOCSIS 3.1 issues with any version of MoCA (1.0, 1.1, 2.0, 2.5).
This is because DOCSIS 3.1 establishes new downstream and upstream frequency ranges. The overall frequency range will be extended in two stages: first to 1218 MHz and then to 1794 MHz. These improvements enable DOCSIS 3.1 to achieve transmission rates of up to 10 Gbit/s in the downstream and 1 Gbit/s in the upstream. Anything basically above 1 GHz can conflict with MoCA.
The only solutions we can provide are:
1. Place a MoCA PoE filter on the coax cable that connects to the modem.
2. If your house has a dual coax setup (2 coax lines running to each room) you might be able to setup your Cable TV service on the 1st coax network and the MoCA service on the 2nd coax network.
3. Ask ISP to provision the line for DOCSIS 3.0 mode (if user wishes to keep using MoCA)
4. Discontinue using the MoCA devices (if user wishes to retain the DOCSIS 3.1 mode and speeds)
5. Identify an alternative home networking technology such as G.hn or Wi-Fi to replace the MoCA
Visit http://www.mocalliance.org/ for more information regarding MoCA and DOCSIS.