Huawei, Proximus Demo 1Tb/sec Optical Network Transmission 40
Amanda Parker writes: Proximus and Huawei have demonstrated speeds of 1 Terabit per second (Tbps) in an optical trial. The speed, which equates to the transmission of 33 HD films in a second, is the first outcome of the partnership between the two companies which was formed in January. The trial was conducted over a 1,040 kilometre fibre link using an advanced 'Flexgrid' infrastructure with Huawei's Optical Switch Node OSN 9800 platform.
Define hd... (Score:2)
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~3.8 GB, apparently.
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1 Tbps in the networking world means 1,000,000,000,000 bits per second because they never got the hang of counting bits instead of measuring baud rate.
1,000,000,000,000 bits / 33 / 1024 / 1024 / 1024 / 8 = 3.5277370250586307410037878... GB per film.
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Newst for nerdst stuff that matterst.
1tbps is easy (Score:5, Informative)
We've been turning up 1tbps optical transport for years, this is easy. You can do this with commodity parts. What they've probably done, which isn't in the summary or TFA, is turn up a single 1tbps super channel over a flexible grid ROADM. That's currently in the development stage with a lot of vendors, such as Alcatel, Ciena, Infinera, Cisco and more. That would allow the entire ROADM system to scale up the N-Terabits, where N is going to depend on how many superchannels can be crammed into the C-band. Probably on the order of 50-100 terabits per second fully loaded.
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I was thinking the same thing, even passive DWDM systems and 100G optics should be able to do 4Tbps over 40 channels - 8Tbps over 80 channels if you've got 50Ghz spaced optics. The passive systems aren't even that expensive, although the frequency-specific optics on each side add up quickly. ROADM systems are nice because you can drop off specific channels and manage amplification and such automatically. In the telecom industry we've been doing this for many years with 10G and OC48/192 links since its c
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Because Coherent optics are wavelength-specific on the receive side, you could set up a 40ch or 80ch system with nothing but 1:N splitters. The problem there would be the 1000 km reach discussed in TFA.
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As noted in the article, it's not the speed alone that is the achievement, but the speed over distance.
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That's no acheivement. 1tbps over 1000 miles is easy. That's ten OTU4 channels running over a simple DWDM system. All the coherent hardware out there has great OSNR performance so running through 10 amplifiers over 1000 miles of OSP fiber is an everyday project.
What this article is about, what everyone is working on in the optical space, is a single 1tbps super-channel. Everyone's already concluded we can't hit 1tbps on the same 25ghz spaced channels we use for 100G, so they are working on concatenating 1
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It would make your comment look a lot more reliable if you at least got your measurement units right.
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If I can go 1000 miles, Dallas to Chicago being a real world example on my network, then I can go 1000 kilometers and then some can't I?
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I didn't mean anything other than what I said by it. Sometimes when you're suggesting being an expert in the field, getting measurement systems confused will destroy your message even if you are otherwise correct.
Quantify. (Score:1)
I breathe through my mouth (Score:2)
>> 33 HD films in a second
How many LOC/sec (Library of Congresses per second) is that?
How about a car analogy?
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And (Score:1)
Some Hollywood executive just fainted.
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People who don't want their network backdoored by the US? Have you missed some info lately?
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This equipment is being deployed by carriers and ISPs, and generally carriers and ISPs have been complicit in the surveillance with the "Five Eyes" anyway, so this isn't a big purchasing concern when buying from Cisco or Juniper.
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In fairness, this is layer 1 stuff that they can't really backdoor. I guess they could create a big red "shutdown" button in Beijing though.
The routers are what you have to worry about forwarding select interesting traffic back to the mothership.
I still wouldn't use Huawei transport though, it's honestly not that cost competitive with home grown vendors like Infinera and Ciena.
What's it really mean? (Score:1)
So we always see these things listed in terms of "how many of these can we transmit".
The problem, of course, is you'd need, I assume all of this carefully staged and ready to cram it down that pipe.
This sounds useful for moving a bunch of bulk data you have already collected, but it seems like the reality of this is always that getting the data ready is your real bottleneck, not to mention the receiving end being able to ingest it.
What real world things can be done with this? I know it's real, but it just
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The problem, of course, is you'd need, I assume all of this carefully staged and ready to cram it down that pipe.
That's what she said.
Re: What's it really mean? (Score:3)
Well... You have to have a good infrastructure for continuous audio and video surveillance of everyone.
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This helps, what, carriers and trunk lines? (Not that it's a bad thing)
Yes, exactly that, of which there are many you personally depend on to post your condescendingly uneducated contributions to /. And many more free of your tripe
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Wow, asshole much? Things went badly at the gloryhole last night?
Look, I asked because I legitimately find myself asking "how can you make use of this?".
It's clearly not something which I as a consumer will directly be able to use, and many of us probably have a hard time imagining in what context you have the ability to move around that much data.
Seriously, fuck off.
This is only around ~120 GB/sec? (Score:2)
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A DVD is really 4.7 decimal GB, so a bit over 4.375 real GB. You should know that if you're going all nitpicky on sizes.