[vcf-midatlantic] ?Comcast at Home? internet speeds 1998 or so?

[MikeWillegal]

You can’t virtualize a plant, what the DOCSIS people mean by virtualization is moving much of the DOCSIS software off of dedicated platforms to a generic cloud based platform - this in itself doesn’t affect performance of the phy/mac layers, in fact, it makes it slightly harder to achieve good upstream speeds because of added round trip latency (requests for bandwidth take slightly longer to be fufilled).

full duplex has been a work in progress for years - it is a very difficult technology - I imagine that at some point it will be completely figured out, maybe sooner rather than later,  which will open up a lot more bandwidth, particularly in the upstream direction

enough about current technology - back to the vintage world - far fewer headaches :)

-Mike Willegal


> On Feb 2, 2022, at 12:59 PM, Andrew Diller <dillera at gmail.com> wrote:
> 
> https://www.tvtechnology.com/news/comcast-announces-10g-advances <https://www.tvtechnology.com/news/comcast-announces-10g-advances>
> 
> Full Duplex DOCSIS4 changes things.
> 
> As for 'not enough bandwidth (in coax)' - you have to understand what is happening. The entire path from the head-end to your home drop is being virtualized.
> 
> “To do this, the team activated what we believe to be another world first – a virtualized cable modem termination system (vCMTS) powered by Full Duplex DOCSIS 4.0 Technology."
> 
> The virtualization of the CMTS plant infra is going to allow these speeds (for customers that choose and pay for that tier). Yes, it's going to cost, and maybe you are good with 1Gb! But some people will want more. 10G is just showing the max bandwidth - I doubt there will be a plan for 10Gb available for a while. I am asking for a slot in any employee trials lol...
> 
> -andy
> 
> 
> disclaimer: I work for Comcast
> 
> 
> 
>> On Feb 2, 2022, at 12:09 PM, MikeWillegal via vcf-midatlantic <vcf-midatlantic at lists.vcfed.org <mailto:vcf-midatlantic at lists.vcfed.org>> wrote:
>> 
>> 
>> From: MikeWillegal <mike at willegal.net <mailto:mike at willegal.net>>
>> Subject: Re: [vcf-midatlantic] ?Comcast at Home? internet speeds 1998 or so?
>> Date: February 2, 2022 at 12:09:44 PM EST
>> To: Neil Cherry <ncherry at linuxha.com <mailto:ncherry at linuxha.com>>
>> Cc: vcf-midatlantic <vcf-midatlantic at lists.vcfed.org <mailto:vcf-midatlantic at lists.vcfed.org>>
>> 
>> 
>> I can easily believe 660Meg down/40Meg up with DOCSIS, but certainly not multi-gigabit up with current technology in a production DOCSIS network.
>> 
>> Mike W.
>> 
>>> On Feb 2, 2022, at 11:56 AM, Neil Cherry <ncherry at linuxha.com <mailto:ncherry at linuxha.com>> wrote:
>>> 
>>> On 2/2/22 10:30, MikeWillegal wrote:
>>>> ... Comcast is using direct fiber connections for their really high speed services ...
>>> 
>>> Grr, would have been nice if I had it all in one message (sorry).
>>> 
>>> My connection isn't fiber, it's the old cable installed a few years ago.
>>> I test it to 660M/40M a week ago. Not sure if cache played a part but I think
>>> the test takes it into account to avoid adding that to the result.
>>> 
>>> -- 
>>> Linux Home Automation         Neil Cherry       ncherry at linuxha.com <mailto:ncherry at linuxha.com>
>>> http://www.linuxha.com/ <http://www.linuxha.com/>                         Main site
>>> http://linuxha.blogspot.com/ <http://linuxha.blogspot.com/>                    My HA Blog
>>> Author of:    	Linux Smart Homes For Dummies
>> 
>> 
>> 
>