[Bloat] [Cerowrt-devel] DC behaviors today

[Pedro Tumusok]

For in home or even SMB, I doubt that 10G to the user PC is the main use
case.
Its having the uplink capable of support of more than1G, that 1G does not
necessarily need to be generated by only one host on the LAN.



Pedro

On Mon, Dec 4, 2017 at 11:27 AM, Joel Wirāmu Pauling <joel at aenertia.net>
wrote:

> How to deliver a switch, when the wiring and port standard isn't
> actually workable?
>
> 10GBase-T is out of Voltage Spec with SFP+ ; you can get copper SFP+
> but they are out of spec... 10GbaseT doesn't really work over Cat5e
> more than a couple of meters (if you are lucky) and even Cat6 is only
> rated at 30M... there is a reason no-one is producing Home Copper
> switches and it's not just the NIC Silicon cost (that was a factor
> until Recently obviously, but only part of the equation).
>
> On the flip side:
> Right now I am typing this via a 40gbit network, comprised of the
> cheap and readily available Tb3 port - it's daisy chained and limited
> to 6 ports, but right now it's easily the cheapest and most effective
> port. Pitty that the fabled optical tb3 cables are damn expensive...
> so you're limited to daisy-chains of 2m. They seem to have screwed the
> pooch on the USB-C network standard quite badly - which looked so
> promising, so for the moment Tb3 it is for me at least.
>
> On 4 December 2017 at 23:18, Mikael Abrahamsson <swmike at swm.pp.se> wrote:
> > On Mon, 4 Dec 2017, Joel Wirāmu Pauling wrote:
> >
> >> I'm not going to pretend that 1Gig isn't enough for most people. But I
> >> refuse to believe it's the networks equivalent of a 10A power (20A
> >> depending on where you live in the world) AC residential phase
> >> distribution circuit.
> >
> >
> > That's a good analogy. I actually believe it is, at least for the near
> 5-10
> > years.
> >
> >> This isn't a question about what people need, it's more about what the
> >> market can deliver. 10GPON (GPON-X) and others now make it a viable
> >> service that can and is being deployed in residential and commercial
> >> access networks.
> >
> >
> > Well, you're sharing that bw with everybody else on that splitter.
> Sounds to
> > me that the service being delivered over that would instead be in the 2-3
> > gigabit/s range for the individual subscriber (this is what I typically
> see
> > on equivalent shared mediums, that the top speed individual subscriptions
> > are will be in the 20-40% of max theoretical speed the entire solution
> can
> > deliver).
> >
> >> The problem is now that Retail Servicer Provider X can deliver a post
> >> Gigabit service... what is capable of taking it off the ONU/CMNT point
> in
> >> the home? As usual it's a follow the money question, once RSP's can
> deliver
> >> Gbit+ they will need an ecosystem in the home to feed into it, and
> right now
> >> there isn't a good technology platform that supports it;
> 10GBase-X/10GBaseT
> >> is a non-starter due to the variability in home wiring - arguably the 7
> year
> >> leap from 100-1000mbit was easy It's mean a gap of 12 years and
> counting for
> >> the same.. it's not just the NIC's and CPU's in the gateways it's the
> >> connector and in-home wiring problems as well.
> >
> >
> > As soon as one goes above 1GE, prices increases A LOT on everything
> > involved. I doubt we'll see any 2.5G or higher speed equipment in wide
> use
> > in home/SME in the next 5 years.
> >
> >> Blatant Plug - request :
> >> I'm interested to hear opinions on this as I have a talk on this very
> >> topic 'The long and Winding Road to 10Gbit+ in the home'
> >> https://linux.conf.au/ at Linuxconf in January. In particular if you
> >> have any home network gore/horror stories and photos you would be
> >> happy for me to include in my talk, please include.
> >
> >
> > I am still waiting for a decently priced 10GE switch. I can get 1GE
> 24port
> > managed ones, fanless, for 100-200USD. As soon as I go 10GE, price jumps
> up
> > a lot, and I get fans. The NICs aren't widely available, even though
> they're
> > not the biggest problem. My in-house cabling can do 10GE, but I guess
> I'm an
> > outlier.
> >
> >
> > --
> > Mikael Abrahamsson    email: swmike at swm.pp.se
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-- 
Best regards / Mvh
Jan Pedro Tumusok
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