100 Gbps Via Ethernet 160
Doc Ruby writes, "As reported at GigaOM, 'Infinera has bonded 10 parallel 10 Gb/s channels into one logical flow while maintaining packet ordering at the receiver,' bridging 100-Gbps ethernet over 10 10-Gbps optical WAN links. Infinera's press release is here. Further from GigaOM: 'The experimental system was set up between Tampa, Florida and Houston, Texas, and back again. A 100 GbE signal was spliced into ten 10 Gb/s streams using an Infinera-proposed specification for 100GbE across multiple links. The splicing of the signal is based on a packet-reordering algorithm developed at [UC] Santa Cruz. This algorithm preserves packet order even as individual flows are striped across multiple wavelengths.' We're all going to want our share of these 100Gbps networks. The current network retailers, mainly cable and DSL dealers, still haven't brought even 10Mbps to most homes, though they're now bringing fiber to the premises to some rich/lucky customers. Are they laying fiber that will bring them to Tbps, or will that stuff clog the way to getting these speeds ourselves?" Rumors say that what runs over Verizon's FiOS is ATM, to support their aspirations for triple-play.
100 GBPS (Score:5, Funny)
Re:100 GBPS (Score:5, Funny)
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Whoa. (Score:3, Funny)
Re:Whoa. (Score:5, Informative)
So, you did 10 (Gbit/sec) * 8 (bits per byte) * 5 (seconds) = 62.5 Gbytes.
The 10Gb links are Ethernet links. Lets also assume HTTP is the transfer method, just to make it 'easy'. We could use FTP which is UDP but then we'd have to account for the TCP Control connection in the traffic. Heck, Lets even assume nice jumbo frames with a 9000 MTU. Also, lets assume the video is 'optimally' compressed.
Ethernet header = 14 bytes
IP header = 20 bytes
TCP Header = 20 bytes
14+20+20 = 54 bytes out of every 9000 transfered for header information.
On top of this, there will be HTTP headers at the start of the request, but since they are only transfered at the start (not every packet), lets factor them out as miniscule.
So, basically 62.5 is the maximum theoretical data of the circuits. 62.5Gbytes
The Maximum possible transfered in 5 seconds would be 62.5Gbytes - 375Mbytes = 62.125Gbytes.
FTP uses UDP? (Score:5, Informative)
http://en.wikipedia.org/wiki/Ftp [wikipedia.org]
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http://en.wikipedia.org/wiki/Trivial_File_Transfe
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I was thinking 10(Gbits / Sec) * (1 byte / 8 bits) * 5 ( sec ) = 62.5 Gbytes
I noticed the units didn't cancel correctly, and didn't think it through.
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I think your thinking of TFTP which uses UDP for things like network booting.
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Or maybe he did 100Gbit/sec
Sorry to pick your numbers as your point was good but the readability of your comment was, at least for me, quite bad as the formula was not only wrong but misleading.
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IP header = 20 bytes
TCP Header = 20 bytes
There is no TCP header on fragments.
Thus that 20 bytes of TCP header is only once per 64K (maximum TCP packet size).
Re:100 GBPS (Score:5, Funny)
Re:100 GBPS (Score:5, Funny)
Re:100 GBPS (Score:4, Funny)
In my day we had to throw bits of shit at each other.
That's right, monkeys invented digital communications. Insert your Al Gore joke here:
KFG
Re:100 GBPS (Score:4, Funny)
Re:100 GBPS (Score:4, Funny)
Hey you youngin's are weak! in my day we could whack out one full EBDIC character a day and at a range of 10 feet, so there!
Mod these idiots up! (Score:2)
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Um, yeah. You might want to try some engineering courses next semester.
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Re:Rich? (Score:5, Informative)
$117 Comcast (Digital Cable without any of the premium channels, broadband at 7 Mbps (although never actually saw rates near that))
$69 Verizon FIOS (Digital TV without any of the premium channels, broadband at 5 Mbps (actually saw rates exceeding that but generally very close to the advertised speed))
Since Verizon FIOS was available in the area (Maryland), Comcast has been pretty heavily advertising their bundle for new customers where you get the Digital Cable ($33), VoIP ($33), and Broadband ($33). Unfortunately that appears to be a one year deal compared to Verizon FIOS which doesn't appear to have plans to jump up after the initial year (hopefully I didn't miss some small print).
FYI - Using SunRocket [sunrocket.com] as my VoIP with the monthly cost under $17 so the Comcast package isn't an option for me.
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*sigh*
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I only recently checked to see if DSL was an option in my area and apparently DSL isn't available. Now maybe Verizon disqualified the DSL check based on the fact that I already have FiOS but even checking a neighbors address indicates that DSL isn't available. I don't know if I'd rule out FiOS just on the basis that DSL isn't ava
FIOS in Maryland (Score:2)
The most recent article [verizon.com] discusses the fact that Verizon sued "Montgomery County asking the court to require the county to negotiate a lawful franchise with the company. Verizon and Montgomery County have agreed to stay Verizon's lawsuit until the county council votes on the agreement. If the agreement is approved, the case will be dismissed
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My Mom (in Montgomery County) has FIOS up to her house for data. It's fast. She's using Comcast for cable TV. She called Verizon about switching over to them for 'cable' service so she could bundle that, and her copper land line all together. They said "Sure! we'll have someone out to tal
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Howard County approved Verizon's franchise agreement on Jan. 3. The company expects to begin selling FiOS TV in the county by the end of April
I held off switching until I could do a complete switch over to FiOS. I think the package offering from Verizon FiOS only applied to savings with the VoIP offering (might have been a $5-10 difference) but as I stated above, I already have SunRocket and it is costing a lot less than Vonage, Comcast, or
Darth Verizon (Score:2)
I have some experience dealing with AT&T ^W New England Telephone ^W^W^W NYNEX ^W Bell Atlantic ^W^W Verizon. I can say with assurance that there *is* a plan to increase the rates. You just may not be aware of it yet.
"I am altering the deal. Pray I do not alter it any further."
Darth Vader doesn't have a thing on The Phone Company.
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Around here Verizon's DSL pricing has decreased over the past few years, while the data rates have increased.
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Now please practive saying: Yes, Lord Vader
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BTW, the link doesn't work for me...did the article expire 5 years ago? (sorry...had to do it)
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Verizon recently replaced their old twisted copper cables when my city (Kirkland WA, multi-million dollar waterfront homes, within spitting distance of Bill Gates' house, etc.) widened a road that runs near one of their CO buildings. They replaced it with........more twisted copper.
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Why? Higher housing density. More people in one place means you can serve more customers with the same amount of cable and equipment.
Since rich folks pay the same as poor for the same internet access, telcos would rather deploy to higher density poor neighborhoods first.
Of course this doesn't apply to high density rich neighborhoods like much of Manhattan, but in suburbia it definitely does.
-Z
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The "poor" are that way for a variety of reasons, not just the one you stated. Living one paycheck away from being on the street changes your financial options. I would have been on the street if not for credit cards, which I used to pay bills until I could find another job. I'm still dirt poor because I'm working on paying them back (and then I have student loans coming up when I gradu
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> you stated.
Clearly, that is why I said, "often".
> "I would have been on the street if not for credit cards, which I
> used to pay bills until I could find another job."
This could be considered as bad money management. Although I understand that extenuating circumstances may have led to this path.
> I have student loans coming up when I graduate this spring
So you're a poor college student? Well, thats a completely different
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Whoa (Score:1, Funny)
Re: not so whoa (Score:2, Insightful)
Ultimately the limiting factors are (a) the transceivers terminating each segment, (b) software, and (c) the speed of light. It sounds like these guys have put their work into (b).
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First off this is FAST so the equipment being used is good quality.
Second if a program wants a packet sent it doesnt need to wait as long for the packets ahead of it in the queue to be sent.
This message was posted over a network with 0.117 ms lag.
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Bad idea for the home network... (Score:3, Insightful)
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Last i heard this stuff was in the field, but it wasn't ethernet (If i remember correctly, a concatonation of a number of STM-64 streams).
For me the news here is that they're using Ethernet (a lan protocol from the 80s) for serious MAN deployments; Not to be sneezed at, but WDM is hardly new technol
Heh like this will ever see homes (Score:3, Insightful)
If anything like this ever came out it would probably be shared (obviously) and beyond the standard monthly fee there would be a per MB charge as well.
God I hate USA's internet
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Hrhr, that was fun
I'm paying 65 euro (=83US$) a month for 2mbit/512kbit ADSL. And that's with 15GB/month download limit (although fair use, which means they turn it off at 50gb). And that's the cheapest option. And btw, I live in a city -.-
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and raped is the correct word -.-
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Unfair, no? Its almost impossible to get unlimited connection - its at least twice that for the same speeds, plus the phone line from BT.
DugUK
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Now I live in Southern California with a huge population and luckily moved my family to a more upscale neighborhood luckily; we are on of the few small communities to get FIOS but I just do not see anybody praising it around here at
Riiight. (Score:2)
Yeah
Somehow I think that if we just had so many other things to do, to the point where people just don't care about internet access, because they're just so darned happy to be outside playing softball and everything else, that we wouldn't be one of the most morbidly obese countries on the planet.
I've got another theory: the demand for Internet doesn't exist in the U.S. to the same extent it does in other countries, b
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But that's a completely unfiltered connection, static IP, no caps, priority support, no hassles about how much bandwidth I use. Which is good, because I'm a digital packrat and I always have something downloading in the background.
GigE (Score:3, Interesting)
Worse the prices beyond GigE are nothing short of heart stopping.
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I'm seeing about 200 euros per port for a 24 port 10GigE switch, much less for a switch with a few 10GigE ports and 24 10/100/1000 ports.
Give it another year for 10GigE. Where the price savings are now starting to happen is with the real, working 1GigE switches with jumbo packet support, flow control, and non-blocking switching
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Besides if you have a good network topology you should be able to upgrade only the core switches and possibly servers to 10Gig, alleviating your bottleneck without needing to upgrade everything.
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For servers, you should look at NIC bonding where you use 2+ cables between the server and the switch. Dual-NIC Intel cards are only $170 or so and there are even quad-NIC cards (or you could just install two dual-NIC cards). That will give you 2-4 gigabits per server of bandwidth to share among the workstations.
You may even want to consider NIC bonding for the workstations, but that will require extra wire runs. Or maybe you get an inexpensive 16 port switch (~$24
Shows how far behind I am.. (Score:2)
TCP-PR = neat stuff (Score:4, Informative)
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OT (Score:1)
[note to mods - self modded down with "no karma bonus"]
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Yeah. (Score:5, Funny)
don't you mean (Score:2)
Certainly welcome in the data centre world (Score:5, Informative)
All the broadband providers are moving to larger pipes now, with GPON (Gigabit Passive Optical Network) going in everywhere, as consumers are clamoring for more than ADSL2+ speeds (24Mbps down, 2Mbps up) in city centres. I'm designing the back end of a GPON network, where every neighborhood gets 2.5Gig down, 1 Gig up, shared between 16 residences. Of course, there is going to be more than just internet on pipes that big, quadruple play to start, and as new services become available even more bandwidth will be needed. Once you start piling up the 10GigE connections, it will be nice to have a working trunk/etherchannel/bonding solution for those long hauls between data centres.
the AC
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And since you seem to know your technical stuff with GPON, do you know if your uprate is time divisioned among the 16 channels or is it a solid 1 Gig upload per channel?
Because I can see a lot of people setting up servers if they can get 1 Gig upload.
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There are supposed to be
Not for grandma (Score:2)
10Gig+ on the internet is the realm of carriers and huge-volume servers. Cable companies are the customers here. Grandma? Not so much.
Fiber's still the wave of the future (Score:4, Insightful)
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Rumor? (Score:2)
What kind of news is this? (Score:1)
Why stop there? (Score:4, Interesting)
So what's preventing them from taking 10 of these newly created 100GbE channels, applying the same technique, and producing 1TbE?
-Tommy
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But if you're going for something like that, why bother trying to stack ten 10-way systems instead of just scaling this thing up to one 100-way system?
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It's all about bandwidth, which is not the same thing as date rate. Unfortunately there's a huge marketroid conspiracy trying to teach us otherwise.
Data rate (in bps) is proportional to bandwidth (in Hz). The factor between them depends on the modulation and coding schemes, which in turn are limited by the signal/noise ratio of the medium. Anyway, the system of light sources, fiber, and receivers has a certain limited bandwidth. For example, if you're using visible light from about 400 to 750 THz, you h
Why is this news? (Score:1)
First ever automobile travel at 500 mph (Score:1)
Tomorrow I might try to get them up to 80 each for an 800 mph demonstration.
Think I can patent this?
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what's so special (besides the speed)? (Score:3, Informative)
Sigh - and the poster seems to think ATM is a good protocol, but ATM is a terrible protocol, especially for data, but even for voice it's mediocre. It was designed for voice conversations over high noise lines with significant data loss (copper) and predominantly used over low noise high speed lines with almost no loss (fiber). Its advantage is standard packet length (53 bytes) and speed. Worst disadvantage - almost 10% overhead (5 bytes of every 53, or ~9.4%). ATM also has no guarantee of sort order or collision avoidance (since it's asynchronous) so in practices it can be really bad. Incidentally, my networking class voted this the worst protocol back in 1996, but expected it to succeed mainly because of telecoms pushing it.
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Luxtera (Score:1)
News about DWDM
http://home.businesswire.com/portal/site/google/in dex.jsp?ndmViewId=news_view&newsId=20061017005207& newsLang=en [businesswire.com]
Darpa Grant Continues
http://www.convergedigest.com/DWDM/DWDMarticle.as [convergedigest.com]
AAARGH!!! 100GBps??? (Score:2)
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It's good old protection. Contracts with towns for exclusive cable rights, and a lack of any me
Average density is a meaningless figure. (Score:3)
Just taking a country's or state's population and dividing it by its area doesn't give much of a meaningful figure of population density. People don't obey the Ideal Gas Law and just spread out evenly over an area. If that was true,
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bonneded DSL was neet too but required all your lines to be F1 pairs and they had to go to the same DSLAM, better to use the F1 pair as either a T1/fractional Frame or PRI - but they charge good money for that.