The Netgear CMD31T has experienced several issues with DOCSIS 3.0 deployments as far back as 2012.
The biggest issue with these modems is that they will not bond to downstream channels properly. This causes them to not be able to register on the DOCSIS 3.0 network. This model modem will function properly on the DOCSIS 2.0 CMTS.
Customer's with a Netgear CMD31T may rent or purchase a modem from us or purchase a new DOCSIS 3.0 modem through a retail store.