Name: フィールドでの高速インターネット - Computerphile (High Speed Internet in a Field - Computerphile)
Uploaded: 2021-01-14T10:21:22.000Z
Duration: 10 min 17 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

So this is the IMF Network Operation Center.

This is where we've been building and staging and then deploying the network from a week.

Everything tested, sent out with the WiFi access points decked base stations of the year.

Come along later and add Virgie SM Bay stations as well.

Thistle then goes out to the dark, unclothed decays.

We call them on sight, so let's start where people can, where they get the Internet.

So we have blanket wired and wireless coverage.

Most people prefer wireless because they don't have to run a cable, But it is there.

There's a docking Chlo within 40 meters off pretty much every tent.

Unless you've camped in a very strange area.

These darting follow it sze German for data toilet, and we use them because they're basically portable toilets, portable lose on.

We used to keep the access points inside, but now we have them mounted on poles.

We find them super convenient because they're basically a waterproof box, and there is the potential for things to get wet on the campsite.

So if we take a wonder up here, maybe, and take a look inside this one.

So we put padlocks on the outside just in case.

But once you get inside, it's pretty hard to confuse them for a working toilet.

We are on access, which, for those who wish to connect, buy Wired Ethan.

That's then also connects to our access point deck Bay Station GSM Bay Station on the roof.

So it's a sequence of individually addressable, eh?

Ladies of that change color, depending on Arnett broadcast messages.

So apart from looking cool, they're actually a really useful way to see if the network at a glance in that dark cloud is running or not.

So one can look across the field and see our power.

Maybe out there, the switch may have a problem and head over and sort it out.

So from here is a complex distribution network off fiver complex, physically not so complex, logically each switch in each of these dark clothes directly connected to our core switch.

But that's a lot of fiber to run, So what we actually do is we run a fiber from each one to a kind of hub tartan clothes on.

We use Elsie couplers just to patch the five onto another fiber with more cause.

So this looks like an underground spiced pleasure because it actually is an underground slice closure.

This runs underground three ducks all the way back to our lock D.

These pop out at a couple of locations on site and we just patch on with couples to provide a connection to the switch or to the switch in the nearby D K.

If we walk down here, I can show you where they will connect logically back to the D.

One was our normal plan, which is to run fiber along the ground on along the festoon lighting which runs through the site.

That was our plan B R Plan A, which we really wanted to do because we like to do something a bit challenging in a bit different every year was to run five but through the ducks on the site.

And I'm very glad we pulled that off because it's so much neater and so much easier to get where you need to go.

A challenge on any field is too cool on dhe protects the servers on the switches that we used to build the network with are not D.

This is This is the solution we've come up with in 2012.

It was a large scouting tent with literally and 19 inch rack down one end, but it kept getting covered with busy field grass and the like.

We had a reefer refrigerated shipping container, which was massive and really cold.

You couldn't set the set point high enough on it.

It was water blowing all over the servers tops covering everything.

So 2016 we decided we just rent the same kind of refrigeration unit the bar use to keep the beer cold, which worked out really well.

The built in chiller that comes with it wasn't quite enough because it's designed to keep food cold rather than removed 2.5 kilowatts worth of heat S o.

We do actually run our own air conditioning inside.

So if I can talk you through what we have in here, we have our course, which which is this Mr Here, These fibers coming in here, Our couples literally onto the younger underground spider.

This is access for the devices in dead center on.

UPS is automatic transfer switch on servers that run as version cluster.

Vital service is that would divide on fights in S T H E G network monitoring that we use configuration management tickets back container on the air conditioner.

Pretty much everything else here is on loan from either a bender or on organization called Event, in which some of our team set up in the Netherlands to kind of hold their native equipment from vendors on store it insurance, ship it out to each of these events.

So it's really convenient no long in advance that we don't have stop lagging.

Well, that so there's pretty much no flat surface on sight, including right here, which is why we put a sign saying nonslip map between every device.

And it's why we have this little body here to make sure that the air conditioner doesn't topple over and crush all the service and drivers and switches.

We have to UPS is London pair, and we have an automatic transfer switch for any servers that can only take one power supply.

But as far as I'm aware, we haven't actually lost marital in this area.

One goes off down the site and into those underground closures that are currently in dark place.

The other one goes well over a kilometre through other ducks, all the way to a green cabinet that we've installed right by the street.

And that's where our circuit actually terminates.

Pain free is possible for them to bring the circuit in, and it worked out really well.

This will stay here and if we return in 2020 we hope to use it again.

We've we've done all we can to protect it.

I'm taking a very long way all the way back to the main entrance off the entire Deer Park, right by the main roads.

I came on the Thursday to install the camera from the hill to do a time lapse video of the build on.

Then we started receiving deliveries Friday morning just before 7 a.m. It's unrecognizable way using single mode fiber, which go 10 kilometers on.

This is about 1.2 is a bit shorter as the crow flies, but we abducting that we have to follow through.

They may look like a portable toilet, but is also neither.

This is actually part of our emergency response plan.

If the Internet connection goes down and we can't get a call out to 999 someone could be sent down to this gate that has a hard line phone inside.

I'm very proud of this, this area all the way up to the toilet up there on the not toilet up there.

We dug this up in the freezing cold in January, installed ducks installed power underground.

We installed other ducks out to the road, literally to the property line here, leaving ducks and ropes for the provider to come and pull their fiber.

Three later, we installed a concrete Clint, and then the following weekend, we install this proper street cabinet.