[Cerowrt-devel] 10gige and 2.5gige

Sun Dec 19 13:07:40 EST 2021

Leviton has wallplates for fiber, and the tools for fiber are cheaper than the tools for CAT6.
Pulling fiber through walls hasn't been a problem for me. No more than pulling CAT6.

I know I shouldn't kink or pull fiber hard. In the worst case, I pull light flexible conduit through walls with pull strings so I can add arbitrary numbers of fibers. This is good practice, anyway (for wires or fibers).

On Friday, December 17, 2021 3:18am, "Sebastian Moeller" <moeller0 at gmx.de> said:

> To add to Joel's point,
> 
> I can do my own catX cable runs and connect sockets/plugs to the cables, but I
> lack the tools for fiber-splicing... as cool as that would be it is going to be
> hard to justify multi-100s EUR for a splicer.. That still leaves short distance in
> the main computing area of an appartment/house, but I doubt that many consumers
> have a concentration high enough to justify the costs even there.
> 
> What I do see over here in Europe, with FTTH-roll out speeding up, is CPE that
> offer SFP/SFP+ cages for the WAN side though, SFP+ becoming more common since ISPs
> started to deploy XGS-PON (gross 10Gpbs bidirectionally, after FEC ~8.5 Gbps).
> 
> 
> Regards
> Sebastian
> 
> P.S.: I have not started jumping on the 2.5 Gbps or higher train just yet, none of
> my devices seems massively underserved with just 1Gbps yet (with the potential
> exception of a single link where >= 2Gbps would be nice since I am one cabe
> short and >2Gbps would allow to multiplex two 1Gbps connections over that
> cable).
> 
> 
> > On Dec 16, 2021, at 22:57, Joel Wirāmu Pauling <joel at aenertia.net>
> wrote:
> >
> > 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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