[Cerowrt-devel] 10gige and 2.5gige

[Joel Wirāmu Pauling]

Yes but as much as I like fibre; it's too fragile for the average household
structured cabling real world use case. Not to mention nothing consumwe
comes with SFP+ in the home space.

On Fri, 17 Dec 2021, 10:43 am David Lang, <david at lang.hm> wrote:

> another valuable featur of fiber for home use is that fiber can't
> contribute to
> ground loops the way that copper cables can.
>
> and for the paranoid (like me :-) ) fiber also means that any electrical
> disaster that happens to one end won't propgate through and fry other
> equipment
>
> David Lang
>
> On Thu, 16 Dec 2021, David P. Reed wrote:
>
> > Thanks, That's good to know...The whole SFP+ adapter concept has seemed
> to me to be a "tweener" in hardware design space. Too many failure points.
> That said, I like fiber's properties as a medium for distances.
> >
> >
> > On Thursday, December 16, 2021 2:31pm, "Joel Wirāmu Pauling" <
> joel at aenertia.net> said:
> >
> >
> >
> >
> > Heat issues you mention with UTP are gone; with the [ 803.bz ](
> http://803.bz ) stuff (i.e Base-N).
> > It was mostly due to the 10G-Base-T spec being old and out of line with
> the SFP+ spec ; which led to higher power consumption than SFP+ cages were
> rated to draw and aforementioned heat problems; this is not a problem with
> newer kit.
> > It went away with the move to smaller silicon processes and now UTP
> based 10G in the home devices are more common and don't suffer from the
> fragility issues of the earlier copper based 10G spec. The AQC chipsets
> were the first to introduce it but most other vendors have finally picked
> it up after 5 years or feet dragging.
> >
> >
> > On Fri, Dec 17, 2021 at 7:16 AM David P. Reed <[ dpreed at deepplum.com ](
> mailto:dpreed at deepplum.com )> wrote:
> > Yes, it's very cheap and getting cheaper.
> >
> > Since its price fell to the point I thought was cheap, my home has a 10
> GigE fiber backbone, 2 switches in my main centers of computers, lots of 10
> GigE NICs in servers, and even dual 10 GigE adapters in a Thunderbolt 3
> external adapter for my primary desktop, which is a Skull Canyon NUC.
> >
> > I strongly recommend people use fiber and sfp+ DAC cabling because
> twisted pair, while cheaper, actually is problematic at speeds above 1 Gig
> - mostly due to power and heat.
> >
> > BTW, it's worth pointing out that USB 3.1 can handle 10 Gb/sec, too, and
> USB-C connectors and cables can carry Thunderbolt at higher rates.  Those
> adapters are REALLY CHEAP. There's nothing inherently different about the
> electronics, if anything, USB 3.1 is more complicate logic than the
> ethernet MAC.
> >
> > So the reason 10 GigE is still far more expensive than USB 3.1 is mainly
> market volume - if 10 GigE were a consumer product, not a datacenter
> product, you'd think it would already be as cheap as USB 3.1 in computers
> and switches.
> >
> > Since DOCSIS can support up to 5 Gb/s, I think, when will Internet
> Access Providers start offering "Cable Modems" that support customers who
> want more than "a full Gig"? Given all the current DOCSIS 3 CMTS's etc. out
> there, it's just a configuration change.
> >
> > So when will consumer "routers" support 5 Gig, 10 Gig?
> >
> > On Thursday, December 16, 2021 11:20am, "Dave Taht" <[
> dave.taht at gmail.com ]( mailto:dave.taht at gmail.com )> said:
> >
> >
> >
> >> has really got cheap.
> >>
> >> [ https://www.tomshardware.com/news/innodisk-m2-2280-10gbe-adapter ](
> https://www.tomshardware.com/news/innodisk-m2-2280-10gbe-adapter )
> >>
> >> On the other hand users are reporting issues with actually using
> >> 2.5ghz cable with this router in particular, halving the achieved rate
> >> by negotiating 2.5gbit vs negotiating 1gbit.
> >>
> >> [ https://forum.mikrotik.com/viewtopic.php?t=179145#p897836 ](
> https://forum.mikrotik.com/viewtopic.php?t=179145#p897836 )
> >>
> >>
> >> --
> >> I tried to build a better future, a few times:
> >> [ https://wayforward.archive.org/?site=https%3A%2F%2Fwww.icei.org ](
> https://wayforward.archive.org/?site=https%3A%2F%2Fwww.icei.org )
> >>
> >> Dave Täht CEO, TekLibre, LLC
> >> _______________________________________________
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