Proving Gig Speed
nanog at radu-adrian.feurdean.net
Sun Jul 22 10:48:24 UTC 2018
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.
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