Re: Docsis 3.1 modem

Robert Baer wrote:
> danny burstein wrote:
>> In <[email protected]> Robert Baer 
>> <[email protected]> writes:
>>
>>>   I now have a Technicolor 8305C cable modem, Docsis 3.0 that supports
>>> Ethernet connection to the computer, 2 telephones, and WiFi.
>>
>>>   Had it for maybe 8 years, still works great.
>>
>>>   Was told to upgrade to take advantage of higher internet speed, so
>>> need a Docsis 3.1 modem.
>>
>>>   I have so far wasted 2 hours trying to find such a beast; That search
>>> term in Amazon gets me a bunch of cable modems, half Docsis 3.0 and few
>>> modems with WiFi.
>>>   Are there NO Docsis 3.1 modems with WiFi?
>>
>> https://www.amazon.com/docsis-3-1-modem-wireless-router/s?k=docsis+3.1+modem+and+wireless+router 
>>
>>
>> gets me a bunch, including (just as one example):
>>
>> https://www.amazon.com/ARRIS-Surfboard-Gigabit-Certified-Xfinity/dp/B07M9J3XW2 
>>
> * NO voice (telephone)
> 
> * NO voice even with the outrageously EXPENSVE NETGEAR Nighthawk Cable 
> Modem WiFi Router Combo (C7800) - Compatible with Cable Providers 
> Including Xfinity by Comcast, Cox, Spectrum | Cable Plans Up to 2 
> Gigabits | AC3200 WiFi Speed | DOCSIS 3.1
> 
> * NO voice NETGEAR Nighthawk Cable Modem WiFi Router Combo (C7800) - 
> Compatible with Cable Providers Including Xfinity by Comcast, Cox, 
> Spectrum | Cable Plans Up to 2 Gigabits | AC3200 WiFi Speed | DOCSIS 3.1
> 
>>
>   Above exhausts that "bunch".
>   Like i meant to say there NO Docsis 3.1 modems with WiFi and telephone 
> (voice).
> 
>   Thanks.
> 

https://www.newegg.com/netgear-cm1150v-100nas-modem-router-combo/p/N82E16825124027

    # Two security bulletins at the bottom.

    https://www.netgear.com/support/product/CM1150V.aspx

It may have an Intel PUMA inside. You'll have to research the
PUMA saga, to decide whether a PUMA 7 is safe to use or not.

There is also an optional power brick with battery backup which
sits outside the CM1150V, and provides telephone service when the
house power is off. It's based on Lithium, rather than the
alternate chemistries used in the past on voice-equipped kit.

One customer review mentions "crashing", in which case you'd
return it within the return period.

*******

There is an Arris TG9442 here, with Broadcom chipset. It only
has two LAN ports. It's unobtanium, can't find it, released
nominally 2019, perhaps hasn't had the blessing of a NA cable co.

http://en.techinfodepot.shoutwiki.com/wiki/List_of_DOCSIS_Cable_Modems

No idea whether an external brick battery-backup is available.

*******

It's relatively difficult to select a box which is issue
free. Like, did the 2017 example receive a "Cable Haunt" patch ?
Or a patch for the two exploits since then ?

I'm also not a fan of units with only Quick Install Guide two
page PDF files either. That's usually a sign there isn't
a full-featured port-forwarding QOS interface to use from
a web browser. My last "properly documented" networking box
here, was years and years ago. The modem I've got now, has
the "dummy interface", and you can barely flip it to bridged mode.

When they offer WAN and LAN ports, those port *could* be off
the same network switch chip or hardware block. In which case the
WAN port just has the interfaces swapped (in the old days, would
need a crossover cable). Now, when one of those boxes offers
a 2.5Gbit WAN RJ45, is that compatible with a RealTek 2.5Gbit/sec
based external four port switch ? So you can run 2.5Gbit networking ?
Having to think about that, is what happens when a standard claims
to offer absurdly high download BW.

I'm sure you'll find something, but it will likely contain
Intel PUMA 7, and you'll have to try to find info. (From a web site
that has not received legal threats etc.) This is Intel we're
talking about here.

    Paul