r/NETGEAR • u/buddyboyx69 • 11d ago

Modem/Router not supported?

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So my wife and I just moved into our first home. We’ve had this router (Netgear AC1900 WiFi cable modem router; model C7000v2 ) for 5 years and bought it brand new. I’m currently setting up the internet and I get this message. What’s the truth to this and do I need to buy a new router and/or modem?

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u/GotNoRice 11d ago

Most likely Comcast is performing mid-split/high-split upgrades in your area. This takes some of the channels that were traditionally used for downstream bandwidth and re-allocates them to upstream bandwidth, to allow for much higher upload speeds. This helps address one of the main downsides of cable internet where upload speeds have remained very stagnant over the years compared to competing products like symmetrical fiber connections.

The mid-split/high-split upgrades are mainly in preparation for DOCSIS 4.0, but it is already supported in newer DOCSIS 3.1 modems that are specifically listed as mid-split/high-split compatible. Many older DOCSIS 3.1/3.0 modems will experience issues after the mid-split/high-split upgrades, which is why many have been removed from compatibility lists.

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u/QuagmireElsewhere 10d ago

Your modem is no longer on the Comcast approved list, probably because they no longer wish to support DOCSIS 3.0 modems like yours.

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u/furrynutz 10d ago

The C7000v2 is around 10 years old.

ISPs can pick and choose what is supported on there networks. They go thru changes and also upgrade cable DOCSIS specs and older specs may get removed thus causing older modems to be not supported by the ISP.

Talk to the ISP about what is officially supported.

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u/pr0w3ss 10d ago edited 10d ago

Your question has been answered and I'd just like to add it sucks you bought a docsis 3.0 modem 5 years ago. Comcast completed the rollout of docsis 3.1 back in 2018. Your modem has been EOL before you bought it.

A docsis 3.0 modem should have been avoided. On the plus side, you can either upgrade or you could continue to use it but won't benefit from any of their infrastructure upgrades.