Re: Proving Gig Speed

[Keith Stokes <keiths () neilltech com>]

Typical electrical breakers are not instantaneous devices and likely will not trip at .5% over rated load until they've 
been run near limit for extended periods of time.


-----

Keith Stokes

> On Jul 22, 2018, at 5:52 AM, Radu-Adrian Feurdean <nanog () radu-adrian feurdean net> wrote:
>
> > On Tue, Jul 17, 2018, at 18:12, Andy Ringsmuth wrote:
> >
> > I suppose in reality it’s no different than any other utility. My home 
> > has 200 amp electrical service. Will I ever use 200 amps at one time? 
>
> No, because at 201 Amps instantaneous the breaker will cut everything.
>
> > Highly highly unlikely. But if my electrical utility wanted to advertise 
> > “200 amp service in all homes we supply!” they sure could. Would an 
> > electrician be able to test it? I’m sure there is a way somehow.
>
> Will they deal with customers calling to complain that their (unknown to the utility) "megatron equipment" says it 
> cannot draw 199 Amps from a single outlet ? I don't think so. They just ensure the global breaker will not trigger 
> when oven+microwave+home-wide air-con+water heating+BT rig in the basement all draw all they can (i.e. up to ~25 Amps 
> each) for something like 5 min.
>
> > saturate my home fiber 300 mbit synchronous connection? Every now and 
> > then yes, but rarely. Although if I’m paying for 300 and not getting it, 
> > my ISP will be hearing from me.
>
> Will you waste your time if some random site says "you have 200 Mbps" ? On residential, we only accept complaints for 
> tests in pre-determined (wired, no intermediate device, select set of test servers and tools, customer hardware 
> check) conditions and only for results lower than 60-70% of "advertised speed". If wireless is invoved, test is being 
> dismissed as "dear customer, please fix your network, regards".
>
> For pro/enterprise service, we use higher bandwidth threshold, but we do expect the other side to be competent enough 
> for something like an iperf3 test.
>
> However, I have to mention that for the moment we can afford to run a congestion-free network (strictly less than 80% 
> charge - usually less than 50% - measured with 1-minute sampling).
>
> > If my electrical utility told me “hey, you can upgrade to 500 amp 
>
> Are the 200 Amps written somewhere in the contract or is it what reads on the usually installed breaker ? Around 
> here, the maximal power is determined in the contract (and enforced by the "connected" electrical meter/breaker that 
> has a generous functioning margin.