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The Road to 100 Gigabit Ethernet

darthcamaro writes "InternetNews is reporting that a grassroots effort is being formed to push 100 Gigabit Ethernet into the mainstream. That's 10x faster than the current fastest Ethernet standard 10 GbE and 1000 times faster than "FastEthernet" but it's not going to be here anytime soon. From the article: '"A group of companies have formed to approach the IEEE to get a vote within the IEEE body to start a standard and that's really where we are," Garrison told internetnews.com. [...] The process then to becoming a full standard is a long and drawn out one that could take five or more years. Garrison explained that the first part of the standard will look at technical and economic feasibility, as well as LAN and WAN opportunities.'"

109 comments

  1. Holding my breath... by 0110011001110101 · · Score: 4, Funny
    FTFA - Don't expect to see 100 GbE anytime soon, though; it's likely not to see the light of day until at least 2010.

    Sweeeeet! Just in time for me to kick ass and chew bubblegum in super high speed on Duke Nukem Forever...

    To be sure I'm first in line, I'll take my flying car and digital Paper directions. I'm sooo gonna get laid.

    --
    Don't anthropomorphize computers: they hate that.
    1. Re:Holding my breath... by 77Punker · · Score: 2, Interesting

      Come on folks, it's really a funny joke. Don't y'all "futurists" get your panties in a bunch over somebody poking fun at you. First it's modding down, next thing you know slashbots are firebombing embassies. All this over a little satire.

  2. Is not that wider, than today's internal buses? by mi · · Score: 3, Insightful

    Even PCI-X? I'm sure, these will improve too, in the future, of course...

    --
    In Soviet Washington the swamp drains you.
    1. Re:Is not that wider, than today's internal buses? by Mr.+Sketch · · Score: 1

      It sounds like we just need a PCIe x400 standard. At 2.5Gbs per link times 400 links is a nice 1000Gbs.

    2. Re:Is not that wider, than today's internal buses? by Mr.+Sketch · · Score: 2, Insightful

      Oops, apparently they are talking about 100Gbe, not 1000Gbe, in which case it's only a PCIe x40 which isn't too bad since they have a standard up to x32. It would only take a year or to I imagine to get to the bandwidth needed.

    3. Re:Is not that wider, than today's internal buses? by TTK+Ciar · · Score: 2, Informative

      I would use this to connect 10Ge switches together, not to connect directly to individual servers in the network. Three 32-port 100Ge switches, linked to 32 32-port 10Ge switches by three links (ie, so each 10Ge switch had three links to different 100Ge switches and one link to each of 29 hosts) would allow any two hosts in a 928-node cluster to communicate at full 10Ge capacity (or, more likely, communicate with any number of hosts in that cluster at 10Ge aggregate capacity).

      Something like this: 928 node network

      -- TTK

    4. Re:Is not that wider, than today's internal buses? by Carnildo · · Score: 1

      Forget PCI-X and PCIe. 100Gbit Ethernet is faster than your computer's memory bus.

      --
      "They redundantly repeated themselves over and over again incessantly without end ad infinitum" -- ibid.
    5. Re:Is not that wider, than today's internal buses? by LordMyren · · Score: 1

      100 / 8 = 12.5

      Dual channel DDR2 at 1066 mhz can hit 6.4 Gbps. More and more systems are coming with a complete dual-channel hookup per cpu-core (a few with more), so for a four way K8 system thats twice the bandwidth of 100 gigabit ethernet. Of course, K8's dont run DDR2, when they do I doubt we'll see 1066 for a while, and DDR2 has such pathetic latencies (5-10-15-20 latencies anyone?) you'd be lucky to get five eights the theoretical. With four way though, thats still more than 100gigabit could manage.

      Hello 2006? Let the throughput wars begin!
      Myren

    6. Re:Is not that wider, than today's internal buses? by Keruo · · Score: 1

      Workstations won't be using 100Gbit ethernet anytime soon, but 100Gbit isn't that uncommon speed in networks.
      The company I work for has several links running at 140Gbit, though that speed is achieved by DWDM, and isn't raw ethernet.
      Fastest core routers can already operate at terabyte speeds, so once the backbone networks slowly upgrade to support faster rates, expect availability of faster and affordable consumer connections to rise aswell.

      --
      There are no atheists when recovering from tape backup.
    7. Re:Is not that wider, than today's internal buses? by ditto999999999999999 · · Score: 1

      May I ask what you used to build that nice graph in so little time?

    8. Re:Is not that wider, than today's internal buses? by TTK+Ciar · · Score: 2, Informative

      I used xfig.

      -- TTK

  3. too slow by jovetoo · · Score: 1

    2010, it'll be just in time to be too slow.

  4. They forgot by Anonymous Coward · · Score: 0

    to mention that it was 10000 times faster than Ethernet

    1. Re:They forgot by Anonymous Coward · · Score: 0

      Yeah, 333,333,333 times faster than a 300 baud modem!!!1

    2. Re:They forgot by Anonymous Coward · · Score: 0

      So how many Libraries of Congress is that?

  5. Required 2010 Reference... by __aaclcg7560 · · Score: 1, Insightful

    Having a 100Gb home network will begin a Second Odyssey of user frustration: the broadband connection out of the wall will still only be 10Mb.

    1. Re:Required 2010 Reference... by jcgf · · Score: 1

      Imagine the poor folks stuck on dial-up. That 100GB NIC, sitting there unused, while you sit and wait for your connection to be established.

  6. In the mean time by bhima · · Score: 1

    I'll take a 10GBASE-CX4 starter kit for my home network...

    One 4 or 6 port Internet router, 2 PCI-X or PCI-E cards and 2 CX4 cables.

    It's worth 700 euros... max.

    Fuck, just typing this is making me bitter.

    --
    Nothing in the world is more dangerous than sincere ignorance and conscientious stupidity.
  7. How about 1 gigabit first? by 330Pilot · · Score: 2, Insightful

    How about we get 1gigabit to become standard first... i have yet to connect anywhere (home, office, school) with a gigabit connection...

    1. Re:How about 1 gigabit first? by drasfr · · Score: 2, Informative

      Gigabit switches are pretty cheap these days. I rewired my home network, 7 machines with a gigabit switched network. I paid about $80 for a 8 ports gigabit.

      My windows machines are loving accessing my file server on the network now! Though now it is getting time to buy a 16 ports switch and to upgrade the wireless network too. My 11b connection is getting too slow to work on the laptops...

      I probably would have no need for a 100gigabit network at home... not yet... but I know some a company that were maxing out their gigabit link to internet. They just did an upgrade to 10 gigabit (2 links for redundancy of course)... and with the growth they are experiencing... 100gigabit wouldn't be out of the question for them in a few years...

    2. Re:How about 1 gigabit first? by bobcat7677 · · Score: 1

      I put Gigabit in a (private) school two years ago. At the time it was still too expensive for their limited budget to make it 100% gigabit on good managed switches, but we were able to put in enough for a minimum of one GbE port in each room of the building. Many of the rooms have more then one GbE port. At the same time we upgraded the backbone of their network (including the older buildings) to GbE so at least the switches have good bandwidth to each other everywhere. They haven't utilized the potential of that bandwith yet as they only have a couple old servers and use the internet more then anything...but there is room to grow for them.

      Oddly enough, at my last job the network was heavilly taxed all the time with tons of client-server and server-server traffic. The CIO would complain about the network being slow and expect us to do something about it. But when it came time to buy hardware, Claimed there was no justification to put out a few bucks more fo GbE switches (we were having to buy hardware anyway). So the network was even slower since we had even more stuff plugged in. So glad I don't work for that pointy haired guy anymore.

    3. Re:How about 1 gigabit first? by Kadin2048 · · Score: 2, Interesting

      True. However, GigE is used a lot on backbone connections within LANs. So even though your client is only seeing a 100Mb port, the switch it's plugged into probably uses 1Gb on its uplink side.

      I think the reason you don't see more 1Gb client ports, is because most network architects want to have the backbones be some multiple of the client-link speeds, and 10Gb connections are cost-prohibitive. And if you don't have the bandwidth on the backbone to carry the traffic (and if most of the traffic in your LAN isn't internal, which is a fair assumption to make in a lot of cases), why bother buying Gig switches?

      The biggest thing most people would get out of some new, ultra-fast Ethernet, would be that their computer's connection might eventually become an order of magnitude or two lower than it. So if you have 100Gb ethernet available to use for backbones, then putting every client in a LAN on GigE becomes more feasible.

      In a home or small-LAN situation, I'd like to see more GigE, because it provides enough bandwidth (theoretically) to do full-resolution screen-sharing in near-realtime. VNC and the like are fine on 10 or 100Mb for remote administration and even regular office tasks, but it's not a way I'd want to play any kind of game, or even use as my main desktop for very long. But at 1000Mb/s, you could (again, theoretically) send a 1024x768x24 bit screen down the wire at 50 refreshes per second, without compression. Now that, to me, spells possibilities. Too bad I'm too poor (and barred by lease from drilling holes in the walls) to put it into my place right now.

      --
      "Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."
    4. Re:How about 1 gigabit first? by Anonymous Coward · · Score: 0

      Taking into account that a SATA/150 drive has a burst transfer rate of 150 MB/sec, you're looking at a maximum throughput of 1.2 gigabits per second. Somehow I doubt you need to upgrade from a gigabit network at all.

      I have a Dell PowerEdge 2850 with 2 physical/4 logical processors, 4 GB of RAM and 5 10,000 RPM drives in a RAID-5 configuration. Backing up MS Exchange 2003 (which is primarily out of RAM) yields about 2.5 GB/minute, or .33 gigabits per second.

      100 Gb/sec networks are NOT for home use, and it's a waste of power and raw materials to manufacture them for home.

    5. Re:How about 1 gigabit first? by Kjella · · Score: 1

      Gigabit yes, NAS no. The only reason you need GigE is if you're pulling lots of files over the local network. I run myself a Linux box with 4 HDDs over GigE. Cheap, but not a very consumer-friendly solution. Something like a Thecus 4100 (4 SATA drives) is $800. Personally I think the prices for what is essentially a NIC, RAID chip and cabinet are completely off the scale.

      --
      Live today, because you never know what tomorrow brings
  8. so what? by pair-a-noyd · · Score: 3, Interesting

    This won't help anyone, what with the plans to throttle services.
    All the talk about multi-tiered service and restricting/blocking content is heating up. Who will benefit from this? Only the few that can afford to shell out for premium services. Us little people will all end up with dial up grade service despite the fact that we COULD have better, provided we are willing to mortgage our homes and sell our souls for better speeds.

    I hope the people drag the scumbag parasite profiteers out of their ivory towers and burn them at the stake.

    Will we ever realize the full benefit of high speed Internet? Doubtful. It will be priced out of range of mortals..

    1. Re:so what? by ZachPruckowski · · Score: 1

      No, it's worse. We'll pay for mega-expensive outside connections at 50 Mbps speeds, and have nothing that the ISPs will allow to be fast enough to use it all. We'll have to be downloading a dozen things at once to saturate the connection. But that isn't strictly speaking relevant to this. This relates to a intranet connection, like within an office. The same principle applies: there is nothing coming that'll use this kind of speed. Unless you stream dozens of movies over one cable, it's currently pointless. not that there won't be a use for it in 2010, however.

    2. Re:so what? by PylonHead · · Score: 2, Insightful

      Ethernet is a local network protocol, and doesn't have much to do with the way you communicate across the internet. This will help anyone running more than one machine in a particular location.

      Businesses will benefit, and users with more than one machine at home will benefit.

      --
      # (/.);;
      - : float -> float -> float =
    3. Re:so what? by jonbrewer · · Score: 1

      Ethernet is a local network protocol, and doesn't have much to do with the way you communicate across the internet. This will help anyone running more than one machine in a particular location.

      This you say, but look at networks in Hong Kong & many European cities. Or Wellington, NZ, where I live and work. Metro Area Ethernet which connect hundreds of buildings - including residential blocks.

      The future of delivery to Multi-tenant buildings (apartment & office blocks) is all about Ethernet. Anything built recently will have at least a CAT5 from the telco demarc point to each unit - and most blocks in the past ten years will have CAT3. Why spend the money on DSL and get an inferior product when you can drop a cheap switch in the Comms room of a building and give everyone an Ethernet VLAN?

    4. Re:so what? by LordMyren · · Score: 1

      You'd need entire google datacenters to layer7 packet shape a 100 gigabit stream.

      Here's to hoping our bandwidth exceeds moore's ability to packet shape it!

    5. Re:so what? by rachit · · Score: 1

      One simple and powerful application for even higher bandwidth ethernet is iSCSI and SANs.

      For enterprises, its a no-brainer.

      For the consumer, eventually prices will come down and it would really be cool to be able to put all your storage in one location in a well designed RAID with hotswappable drives and expandable storage and access it like you access any block device (ie. install OSes on it, etc.).

    6. Re:so what? by Grishnakh · · Score: 1

      That's all fine and dandy if you live in an advanced country like Hong Kong, Australia/NZ, or someplace in Europe. But for those of us stuck in the USA, we're going to be limited to DSL or cable, and in the very near future our bandwidth will be severely limited due to the profiteering of greedy American telcos who own the backbones.

  9. Grass root? Mainstream? by Guspaz · · Score: 5, Insightful

    Those terms imply consumer acceptance. Even the fastest consumer hard drives can't saturate a 1 gigabit ethernet connection. Consumers don't even need 10 gigabit, why would they want 100 gigabit?

    Besides, while 1 gigabit ethernet has gained consumer acceptance over the years, with more and more consumer-level products supporting it, the vast majority of consumer networks are still 100 megabit. Most new computers might have onboard gigabit ethernet, but since manufacturers keep putting 100 megabit switches in convergence products (routers with onboard switches), nobody can use gigabit.

    Of course, I realize that the article uses these terms in relation to large companies, but I don't think they can be used in that context. Even so, the current equipment to handle 10 gigabit connections is quite expensive even for large corporations, the cost of 100 gigabit would be prohibitive.

    1. Re:Grass root? Mainstream? by Cyclops · · Score: 1

      If you want to make sure you have 24 vlans in an wide-lan to have 1 gbps each then it's likely cheaper to have multi-gbps cards and cables.

    2. Re:Grass root? Mainstream? by Anonymous Coward · · Score: 0

      Maybe 10 gigabits is expensive *NOW*, but someday it will be dirt cheap. Just like it is now to build a 10mbps network, you can get those practically free.

      I think it's great that they began the procedure to get there someday. It's a slow process, better to start now that we yet don't need it.

    3. Re:Grass root? Mainstream? by justins · · Score: 2, Insightful
      Even the fastest consumer hard drives can't saturate a 1 gigabit ethernet connection.

      My keyboard can't saturate a 1 gigabit ethernet connection, either. A nonsensical observation, but no more than yours.
      --
      Now before I get modded down, I be to remind whoever might read this that what I am saying is FACT. - bogaboga
    4. Re:Grass root? Mainstream? by spinfire · · Score: 1

      The point isn't to run this out to the desktop, or server. Even 10gigE is a silly choice for that today. But 10+gigE is plenty useful for aggregating between links. For example, if my company has two branch offices and I need to transfer a lot of data back and forth, I might lease dark fiber and connect the two offices using 10gigE between each office's routers.

    5. Re:Grass root? Mainstream? by MoogMan · · Score: 2, Insightful

      So you suggest we all stick to our 28.8kbps modems, on our 486s with 8MB of RAM, because "the cost of anything higher is prohibitive". Just because it *is* {unusable, unsupportable, too expensive, uneconomic to produce, ...}, doesn't mean it wont be (in the near future)

    6. Re:Grass root? Mainstream? by Meostro · · Score: 3, Funny

      "I think there is a world market for maybe five computers." - Thomas Watson, 1943

      "640k ought to be enough for anybody" - Bill Gates, 1981

      "Consumers don't even need 10 gigabit, why would they want 100 gigabit?" - Guspaz, 2006

    7. Re:Grass root? Mainstream? by Guspaz · · Score: 1

      And my previous point stands. Only the largest of companies can currently afford 10GigE optical equipment. ThePlanet, a large hosting company with several dozen gigabits of bandwidth has been wanting to move some of their connections from GigE over to 10GigE for a while. Unfortunately, the cost and availability of the equipment to handle 10 gigabits per second has been a stumbling block.

    8. Re:Grass root? Mainstream? by LordMyren · · Score: 1

      Raptor SATA can break 88 MBps. Thats 704 Gbps. Add a little bit of network overhead, even for something as raw-metal as ATA-over-IP, you're still talking "damned close". Thats for _one_ hard drive, how passe.

      Of course 10 gb is not for "consumers". At least not now, not for what we've got. But some day, if homes really are shuffling around 1080p streams (or bigger) like candy, even your average consumer home might need 10 gb backbones. If 1 gigabit is one single modern hard drive, 10 gigabit is not unreasonable for even a home backbone.

      For enterprises over 100 employees doing data intensive work, I can picture 10 gigabit being a problem. They need someplace to go. In the meanwhile, the only way anyone else is going to be afford 10 gig is by there being some higher realm start the downpush of commodification.

      ----
      Good call on the consumer gear. I am rather pissed the wifi routers are all still 100 megabit. I'm hoping with 802.11n we get a new round of routers with gigabit and cool new new processors. My WGT634U can only sustain 1.8 MBps from the USB to the wired ethernet. I doubt the USB to the wifi would be any better. Thats some shite DMA performance. On the other hand, dumb gigabit switches are pretty cheap, even some of the ones with Jumbo frames. But I'd still argue that gigabit has reached saturation, its cost is low enough that its basically just cause corps would rather use $0.30 chips rather than $1.30 chips in their routers and no one demands better for a do-it-all wirelessinternet widget.

    9. Re:Grass root? Mainstream? by ditto999999999999999 · · Score: 1, Insightful

      "I think there is a world market for maybe five computers." - Thomas Watson, 1943

      - Yes, at the time. I know I wasn't buying one in 1943. Were you?

      "640k ought to be enough for anybody" - Bill Gates, 1981

      - Yes, at the time. I know I couldn't afford more that that in 1981. Could you? Secondly, I don't believe he ever said this.

      "Consumers don't even need 10 gigabit, why would they want 100 gigabit?" - Guspaz, 2006

      - Yes, even in 2010 consumers won't need 10 Gig Ethernet. Step outside your living room and realize there is world of communication giants out there that do need it.

      Ditto

    10. Re:Grass root? Mainstream? by Anonymous Coward · · Score: 0

      88MBps ~= 704Mbps == 0.6875Gbps

      Looks like you missed a dot in front of your Gbps figure.

    11. Re:Grass root? Mainstream? by Bios_Hakr · · Score: 1

      Raptors are bad ass. I have two of the 36gb version in a RAID0 config. I can sustain over 110MB/sec. At a LAN party, I moved all my "tradable files" to this array and plugged in to the Gig-E switch with my NForce3 Gig-E adaptor.

      That link was saturated the entire night.

      --
      I'd rather you do it wrong, than for me to have to do it at all.
    12. Re:Grass root? Mainstream? by LordMyren · · Score: 1

      supposedly the new ones also dont sound like jet engines.

      the original 36 gig ones were strange beasts indeed. very quirky. sometimes they worked great though. great for doing fileserve. just make sure to reserve some bandwidth for yourself, eh? ;-]

    13. Re:Grass root? Mainstream? by Guspaz · · Score: 1

      Raptor SATA can break 88 MBps. Thats 704 Gbps. Add a little bit of network overhead, even for something as raw-metal as ATA-over-IP, you're still talking "damned close". Thats for _one_ hard drive, how passe.

      I think you mean 0.704 Gbps. I don't know about gigabit NICs, but with 100mbit NICs I usually see about 80mbit of real-world transfer speed using regular Windows filesharing. Still a bit of leeway there, if the percentage holds true.

      Besides, that 88MB/s figure is the peak sequential transfer (at the edge of the platter) for the new 150GB model. With file fragmentation, realworld random access performance is going to be lower.

      Sure, with a nice RAID array you can break the gigabit level but even then a two-disk RAID-0 array isn't going to be much over a gigabit in realworld (random access, fragmented files) performance. Any more than that and you're moving beyond consumer-level performance anyhow.

      Of course 10 gb is not for "consumers". At least not now, not for what we've got. But some day, if homes really are shuffling around 1080p streams (or bigger) like candy, even your average consumer home might need 10 gb backbones. If 1 gigabit is one single modern hard drive, 10 gigabit is not unreasonable for even a home backbone.

      IIRC, 720p is only 25 megabits (MPEG-2). I guess 1080p would be around 50 megabits. You could do fine with 100 megabit ethernet (3 streams of 720p, 1 of 1080p), let alone gigabit ethernet (30 streams of 720p, 15 streams of 1080p). What sort of device would ever need to handle more than 30 HD streams? With a gigabit switch that had a decent backplane bandwidth, you'd be able to handle more than 30 streams between multiple devices, the only time that the 30 streams becomes a bottleneck is if ONE device has to handle it all (or you have more than one switch). I really don't think that will ever be a problem with HD.

      Another consideration is that HD is not limited to MPEG-2. Certain HD providers use MPEG-4, or even h.264/AVC (Several US satellite providers use this), which require a lot less bandwidth.

      I think it is also safe to say that, considering the half and half approach HD is taking towards MPEG-2 and newer codecs, any future better-than-HD would certainly use one of these newer codecs as a minimum, with the possible option of an even better as of yet uninvented codec.

      So I see 1 gigabit ethernet as being nearly overkill for current HD, and more than sufficient for beyond-HD.

      For enterprises over 100 employees doing data intensive work, I can picture 10 gigabit being a problem. They need someplace to go. In the meanwhile, the only way anyone else is going to be afford 10 gig is by there being some higher realm start the downpush of commodification.

      I don't see 10 gigabit as being a problem. There are so very few enterprises that would need MORE than 10 gigabits per second of networked access (Local caching does wonders), since virtually no enterprises currently even have 10 gigabit.

      Besides, there would probably be a greater benefit from taking a 10 gigabit network and adding 100 gigabit inter-switch backbone connections rather than upgrading every port to 100 gigabits. It'd certainly cost a lot less.

    14. Re:Grass root? Mainstream? by Plammox · · Score: 1

      I don't think you fully understand the challenge of constructing 100 Gb/s equipment. The optical industry is struggling with developing 40Gb/s at a competitive price. No telco would ever touch that if you can get 4 x 10Gb/s equipment at a fragment of the cost.

      Cost is not necessarily prohibitive, but it certainly can slow down acceptance of new technology.

      Besides, we should focus on higher bandwith connections to the end user such as fiber-to-the-home initiatives. This is one of the few things that can drive acceptance of high speed network equipment. I'd certainly love to have a "small" 1Gb/s connection rather than my own puny 2Mb/s line.

      Don't fool yourselves, 10Gb/s and 100Gb/s are way out, still.

    15. Re:Grass root? Mainstream? by Bert64 · · Score: 1

      Technology like this is not aimed at home users...
      Nor was gigabit, or 100mb ethernet when it first became available, it took a few years.

      For a while, 100mb ethernet will be used in datacenters between high performance multiple processor servers connected to large fibre channel sans... not cheap consumer hardware

      --
      http://spamdecoy.net - free throwaway anonymous email - avoid spam!
    16. Re:Grass root? Mainstream? by Anonymous Coward · · Score: 0

      Raptor SATA can break 88 MBps

      That's barely enough to saturate a GigE connection. It would only be 10% the capacity of 10GigE and 1% the capacity of 100GigE.

    17. Re:Grass root? Mainstream? by LordMyren · · Score: 1

      right now, i agree with you 100%, 10g is hardly needed anyhwere. but to address your orignal post, its that future thing that has me wondering. doubling up or tripling up on gigabit is currently standard practice for data intensive systems-- not just big iron, but rouge hackers cobbling together powerful clusters and grids for fun or profit. and it makes sense, its so damned cheap why not? besides, who can afford 10g? but with the throughput wars, how long can this really last? this is grassroots. this is mainstream, within the domain of computing hardware systems. for the actual computer industry, 1g is woefully insufficient.

      grass-roots is people using drbd network replication with Xen to support live virtual host migration. if a filesystem fails, just migrate the hosts on that filesystem over to the host on the network backup and run them there. This sort of advanced system shuffling used to be the domain of blade systems and IBM, but now that bandwidth is becoming commodified and abundant we can start doing these things grassroots. Even now, some casual idiot can throw twenty one hard drives into a case for a couple terabytes of online storage. Soon with SAS (good overview), custom build storage will become only more of a reality.

      Actually, SAS expanders use 4g infiniband interconnect. Maybe we just need cheaper infiniband. 4G is "nearly" enough.

      So, currently storage solutions and blade systems are proprietary and expensive. With 10g and rapidly accelerating high availability and distributed systems, the linux kiddies are building it themselves.

      this being said, i do wish to emphasize once more that I do really agree with you. there wasnt a single thing i didnt say yes yes and nod my head to in the parent.

    18. Re:Grass root? Mainstream? by Grishnakh · · Score: 1

      Huh? With external storage (SANs), it's easy to saturate a 1 GbE connection. Pretty soon, 10GbE will be pretty normal if you want a decent-performance SAN.

  10. Jumping the Gun by Nom+du+Keyboard · · Score: 2, Insightful
    but it's not going to be here anytime soon.

    So why are we even talking about it now? This isn't going to change anybody's life (unless you've trying to get on the standards committee) today, tomorrow, or likely this year. How about this be reopened when some working silicon (or whatever material it's going to take to operate at this speed) is up and working in the lab? Then it might have some relevance.

    --
    "It's the height of ridiculousness to say for those 9 lines you get hundreds of millions."
    1. Re:Jumping the Gun by Scudsucker · · Score: 1

      So we shouldn't talk about it until it's a viable product, but how does it become a viable product without any sort of discussion or planning? Good thing our ancestors had a different mindset, or we'd still be living in caves.

  11. Pointless by Ramble · · Score: 1, Redundant

    There isn't really much point, very few internet connections are going to be over 10mbit/s let alone 1000gbit/s. The only application this is really going to have is transferring huge files, and even then, hard disks arn't fast enough to saturate the network bandwidth.

    --
    "Oh boy"
    1. Re:Pointless by TinyManCan · · Score: 2, Insightful
      10 Gigabit Ethernet can be effectively used. I've seen transfer rates of over 850 MB/s on a single 10gbs link.

      You might be right in that a single consumer drive can not make use of that storage, but there are systems out there that can saturate a 10gbs link many times over.

      Just because you can not fathom a use for the technology, does not make it pointless. Just try managing an environment with 50+ backup servers (because of the 1gbs and 100mbit links to those servers) compared to an environment that has 5 backup servers connected via redundant 10gbs links to the core switches in a datacenter.

      Not only do we get *more* done with 1/10 the number of servers, we have reduced the management and administrative workload and made administrators time available to work on important things like disaster recovery.

      As long as storage and disks keep growing, we _have_ to keep increasing the speeds of the links between them. If we don't, the amount of time it takes to access and back up those disks will increase exponentially along with thier capacity.

    2. Re:Pointless by Detritus · · Score: 1

      I can burn 1.5 Gbps with a single HD video stream. Network HD video feeds are distributed at 45 Mbps.

      --
      Mea navis aericumbens anguillis abundat
  12. When will they start.... by sglafata · · Score: 2, Interesting

    ...adding a fiber adapter to motherboards as standard? With the limitations that wire has, is a fiber connection directly on your motherboard, or as a cheap alternative add-on card, that far off?

    Verizon already offers Fiber To The Home in some markets. Imagine a direct fiber connection to your PC.

    --
    "If you can't dazzle them with brilliance, baffle them with bullshit."
    1. Re:When will they start.... by madaxe42 · · Score: 1
    2. Re:When will they start.... by wiggles · · Score: 1

      Fiber Channel only runs at 2Gb/sec, which sucks. With 10Gb ethernet pushing its way out and FC not reallydoing anything new (though admittedly I could be out of the loop on this), I'm wondering if FC will be replaced by ATA-over-ethernet for SAN usage.

    3. Re:When will they start.... by sonofagunn · · Score: 1

      Sun and Luxtera are working on it. It won't be long before it's possible. Their method sounds inexpensive as well.

    4. Re:When will they start.... by statemachine · · Score: 1

      "Fiber Channel only runs at 2Gb/sec"

      Currently seen:

      10Gb/s ISL

      4Gb/s host and storage.

      You can also aggregate fibres and get more bandwidth.

    5. Re:When will they start.... by lgw · · Score: 1

      Also, FC is faster (in terms of payload bytes) than iSCSI at the same wire speed, because of overhead.

      I haven't seen a standard for ATA over ethernet, but there is plenty of storage today that uses iSCSI to talk to ATA drives. iSCSI has a lot of overhead compared to fibre channel, however. 10Gb iSCSI will be faster than 4Gb FC, but not by much, and only if everything is switched so collisions are rare (which is the norm these days). 10Gb FC is significantly faster than 10Gb iSCSI in terms of payload transfer.

      Of course, a 10Gb storage connection isn't a pressing need this year because you reach other bottlenecks first. We probably won't see 10Gb FC host-to-starage until drives get faster and 4x or better PCIe slots become common.

      --
      Socialism: a lie told by totalitarians and believed by fools.
    6. Re:When will they start.... by wiggles · · Score: 1

      Ahh yes. I stand corrected. I googled this and found a 2001 press release from Brocade saying they were releasing 10Gb FC switches. I'm a bit out of the loop on this.

    7. Re:When will they start.... by questionlp · · Score: 1

      You mean like this motherboard with four copper, plus four SFPs that can accept copper or fiber modules? Now if only they could combine it to 2 10 Gig Ethernet plus two Gig Ethernet, that would be one kick-ass server :)

    8. Re:When will they start.... by RhadamanthosIsChaos · · Score: 1

      Well, it's not cheap, but my school uses fiber directly to PCs.
      Case Western Reserve University, (we've been on slashdot before) home of Fiber Gigabit Ethernet to the student systems.

      We even have a gigabit link to the internet these days.
      It's very nice to get sustained internal transfers of 25 MB/s or so...

      --
      +++OUT OF CHEESE ERROR+++ REDO FROM START +++
  13. optical switching by evangellydonut · · Score: 2, Informative

    have you even looked at the signal integrity issues related to any hss link running at 10gbps/link? unless you run 10 lvds hss for half-duplex 100gbps it'll have to be optical. then it becomes an issue of designing an optical switch that can handle the load, and a ridiculously (and impossibly so by today's standard) fast optical-to-electrical interface, again, to at least 10 hss lvds pairs to achieve those speeds... dream on!

  14. Server connections by phorm · · Score: 1

    In a way, you may be connecting through 1GB and just not know it. At the networks here, we have a 1GB connection from the server to the switch, when then splits into 10/100 connections. This means that multiple network machines can grab data in the 10/100 range, but the overall data consumption from machines connected to the server will not be bottlenecked at 100MB/s.

    Of course, depending on what is being done the data rate is still limited by the hardware on the server (drive speeds, etc), but it does have some noticable speedup over plan 10/100 on all switch ports.

    1. Re:Server connections by Afrosheen · · Score: 1

      We're beginning to move to gigabit at my office as well. From switch to switch, it's fiber. Most of our drops are gigabit now, and any new drops are of course gigabit. The goal here is to eliminate bottlenecks, and even though some switches are 10/100, others are gigabit and when they exchange data with each other the bottleneck is not the wire.

        It's also beneficial using gigabit just to keep total network saturation lower. You can max out a 10/100 connection with enough clients pulling enough data from each server. Throw gigabit into the equation, and even though your servers are only pushing data across the network at xMB/sec, they're no longer pushing the ceiling on total throughput. This leads to less collision and packet loss and a smoother network for everyone.

        In the past and in the forseeable future, that plug on the wall leading to the outside world will always be the last unconquerable bottleneck. Sometimes I wish the US had a state-run telco monopoly like Korea or Japan so we could get some affordable, serious bandwidth everywhere.

  15. Wider? by Anonymous Coward · · Score: 1, Informative

    I realise your comment has been moderated "insightful" but could you explain it for us slow people.
    What does 100G ethernet have to do with internal bus width?
    Thank you.

    1. Re:Wider? by mlheur · · Score: 2, Informative

      If your PCI bus can only serve data to your NIC at 50Gbps, your card that can send at 100Gbps won't have anything to send that fast because he's waiting for the computer to feed him.

      Now of course that goes away if you only use 100Gbps as trunks between switches, and connections to individual PCs stays at GigE, but the internal bus of the switch still comes into play.

    2. Re:Wider? by Anonymous Coward · · Score: 0

      You can't write data any faster than your bus can move it.

    3. Re:Wider? by MindStalker · · Score: 1

      His thought is that a PCI-X slot can barly send 1Gb so the talk about 100Gb is silly. Of course these 100Gb connections arn't for mortals anyways.

    4. Re:Wider? by Anonymous Coward · · Score: 1, Informative
      Ok, I get it now.
      Actually I work for a router company. So I look at 100G as an interconnect between routers not as a termination point.

      BTW 40Gbe is the most likely next interface. But some ISPs have an all ethernet network (no sonet) so 100G is the next logical step to them.
      Sonet based shops have always been more reasonable; 4x (oc12->oc48->oc192) speed each generation not 10x (10->100->1Gbe-10Gbe).

      OC192 and 10Gbe are the same rate so there is lower cost because of shared components (optics/framers).
      OC768 (40G) will be the next step in sonet unless there is a major push to 100G.

      Thanks for the replys.

    5. Re:Wider? by mi · · Score: 1

      "Wider", you know, as in "bandwidth"...

      --
      In Soviet Washington the swamp drains you.
  16. You all are missing the point by 0rbit4l · · Score: 5, Insightful
    100 Gb/s Ethernet is not for joe schmoe sitting at home on his consumer broadband connection - it's for servers connected to a backbone link. The idea is that 100 Gb/s Ethernet would be part of a server that could handle far more connections & deliver far more throughput per machine, which is important in the datacenter where you'd like to reduce the raw number of machines to save on power (and as part of that, cooling). Sheesh, if you'd stop bitching for a few minutes about your cable company limiting the rate at which you copy donkey porn, you might discover a whole other world of networking challenges out there that people are working on.

    (Obviously you have to have enough bus & memory bandwidth and compute power to drive a 100 Gb/s link - but this is a necessary piece of the puzzle).

    1. Re:You all are missing the point by madhitz · · Score: 2, Insightful

      I don't think anyone is missing the point...I agree that there is a sub-section of users that are bitching about the capping of download/bandwidth, however, these same people are actually fighting (whether they know it or not) against another few evils. They are also, I'm sorry to say, the reason there is an Internet...without end-users, albeit corporate/commercial/personal, what's the point of an Internet?

      Remember when cell phones were per-second? All plans eventually switched to per-minute, why? ~30% LESS talk time than with per second....subtly disguised as a "new feature" or "that per second was too hard to account for". I've taken math before, per minute (rate*minutes) vs. per second (rate*seconds)....come on. Same with voice mail, call waiting, text messaging. All once included in my cost, now broken out so they can ding you for mo' MONEY, MONEY, MONEY. It's amazing how companies work to make you think you're "getting more" for less.

      Move forward to the issue at hand...capping of bandwidth and transfer. How is it that my bill continues to go up-up-up, however, my service seems to get slower or more limited? Ahh, because these companies know the future...IPTV, VOIP, distributed-downloading, and hell, one day you may even sign-up for a service that re-images your machine to your snapshot every time you reboot it from the Internet or load programs directly from vendors sites...And if anyone thinks that is going to come with a 1-2Mb download overhead or that 5Mb/s will cut it, you're crazy. Therefore, faster speeds and larger tunnels are going to be needed in order to facility this type of computing/entertainment...they know this and will now begin to cut back what you have, in order to make it look that much better when they give back, what you had originally, at a 50% markup....frankly, I'm surprize more ISP's haven't cut VOIP out yet, since they are beginning to offer it now.

      Final point is regarding North America as a whole...why do the more progressive (non-Capitalist) nations have remarkable speeds, compared to the somewhat sluggish availability here? I relize geography is a concern, but in major markets, how is it that the fastest speed is still 1/3 of other countries (with what I can remember as being a higher cost associated with it?). MONEY MONEY MONEY....I mean, I saw an ad the other day for dial up...only $9.95 a month. Dial-up...welcome to 1990. $9.95/month, welcome to 1995.

      I know they invest money to make their systems better and faster and more stable, however, if I pay $50 a month for service, I'd expect to pay $50 in a year, for something better...not $55 for a slower or more restricted service. I'm, by being a customer, investing in you as a company, and your technology....if it costs $1200 a year to run maybe 200Gb of bandwidth for an individual user, they are doing some wrong....

      My $0.02...that I managed to save from them ;)

    2. Re:You all are missing the point by HockeyPuck · · Score: 1

      Buddy, YOU are missing the point.

      It's for MAN/WAN/LAN switch-switch or router-router connections. Not host to switch connections. Why do you think you can't have OC48/192/768 on a NIC...

    3. Re:You all are missing the point by Anonymous Coward · · Score: 0

      ding ding ding.. we have a winner.

      No server is going to be pumping 100Gbps. 100Gbps is only useful when aggregating a bunch of other fast links. A 100Gbps interconnect can ensure that when you get an assload of machines talking to one another, the infrastructure holds up.

    4. Re:You all are missing the point by RzUpAnmsCwrds · · Score: 1

      100 Gb/s Ethernet is not for joe schmoe sitting at home on his consumer broadband connection - it's for servers connected to a backbone link.

      Apparently, you missed the point as well. Servers today seldom push even 1Gb Ethernet, let alone 10Gb or 100Gb Ethernet. The primary use for 10Gb Ethernet today is in the network backbone - Comcast, for example, has an entire fiber network that carries voice and data based on 10Gb Ethernet.

      While we may see server adoption in the future, it's going to be quite a while before servers can push 10GB per second. Backhaul use, on the other hand, will see adoption much sooner.

  17. How far can they push this? by DurendalMac · · Score: 1

    You can only twist and shield the wires so much before you can't twist them anymore and extra shielding does jack. They've got to be hitting the limits of twisted pair copper wiring. It's gonna be a bitch to get it up to 100Gb, and it's going to be even harder (if it's even possible) to get that up to a terabit.

    1. Re:How far can they push this? by zackeller · · Score: 2, Informative

      They gave up on UTP cabling for the 10gbe standard. 100gbe will be fibre.

    2. Re:How far can they push this? by Anonymous Coward · · Score: 0

      you're a dumbass.

    3. Re:How far can they push this? by Shimbo · · Score: 1

      They gave up on UTP cabling for the 10gbe standard.

      No, they just don't have a standard out yet; 802.3an is working on it though. It wasn't released simultaneously with the fibre standard because it's a harder problem. Then again, neither was gigabit. Or come to that even 100Mbit/s, depending exactly how you date it.

      100gbe will be fibre.

      Probably.

    4. Re:How far can they push this? by lgw · · Score: 2, Informative

      We could also figure out how to do DWDM or other technologies that are easy with radio to put data on the wire in a more effecient manner. Going to fiber works, of course, but then you still have the problem with switches and GBICs and the like: the signal has to be in copper at some point, and 100Gb pushes the limits on that until we start using better encoding.

      --
      Socialism: a lie told by totalitarians and believed by fools.
    5. Re:How far can they push this? by DurendalMac · · Score: 1

      Well, who could argue that logic, especially the type you get from a trolling AC? What, sad that you're greased up yoda doll scripts don't work anymore?

  18. WTF? How is it nonsensical? by brunes69 · · Score: 1

    Of what good is a 1Gb/s ethernet connection to a consumer if his hard drive can only read/write data at a peak rate of 400 or 500 Mb/s ? The speed of the LAN is irrelevant at that point.

    1. Re:WTF? How is it nonsensical? by Brian360 · · Score: 1

      client$ nc -l -p 5000 > /dev/null
      server$ cat /dev/urandom | nc client 5000

      Some of us like to transfer data that never hits the disk.

    2. Re:WTF? How is it nonsensical? by abradsn · · Score: 1

      If the data is stored in Ram, and there are multiple threads working, you could saturate the connection. True, that you will likely just be saturating the network switch more often though.

    3. Re:WTF? How is it nonsensical? by Anonymous Coward · · Score: 0

      Of what good is a 1Gb/s ethernet connection to a consumer if his hard drive can only read/write data at a peak rate of 400 or 500 Mb/s ?

      Because the consumer can read/write data at a peak rate of 400 or 500 Mbps versus, say, 100 Mbps?

      I use a domain server and fileserver along with roaming profiles to keep Windows XP pro machines in sync on my home network. Upgrading the network to gigabit ethernet from fast ethernet permits the clients to use SMB shares to download data 4 times faster (20 MB/sec) and upload data 2 times faster (9-10 MB/sec) than they could on fast ethernet (5 MB/sec). Does it saturate the connection? No, and I don't care.

      Your argument makes sense if there's no speedup, like there would be for 1 Gbps to 10Gbps on my current equipment. But we're not at that point yet, are we?

    4. Re:WTF? How is it nonsensical? by Lodragandraoidh · · Score: 1

      With larger and larger storage needs (for such things as DVR, centralized content management systems, music siloing etc...) and for interactivity between more and more devices on the network, I can certainly see a point at which 100mbs will not suffice for most users.

      Over the next 5 to 10 years we will see an explosion of applications, and NAS (network attached storage) devices and multiple computers and computerized devices will enter the home network and become the norm.

      It is coming; lead, follow, or get out of the way... :P

      --

      Lodragan Draoidh
      The more you explain it, the more I don't understand it. - Mark Twain
    5. Re:WTF? How is it nonsensical? by Lars+T. · · Score: 1
      So the "mainstream" needs 100 GBit Ethernet to move data from RAM of one computer to the RAM of another computer?

      100 GBit/sec - that's about 10 GByte/sec. You'll need a 64 bit CPU to even saturate the connection for more than 0.5 seconds.

      --

      Lars T.

      To the guy who modded me down from perfect to terrible Karma - Apple haters still suck

    6. Re:WTF? How is it nonsensical? by default+luser · · Score: 1

      That's easy. Joe Schmo's fast ethernet NIC maxes out at 90Mb/s with TCP/IP overhead. Jow Schmo's new hard drive maxes out at 500Mb/s sustained read speed.

      THATS A 5.5x INCREASE IN PERFORMANCE just going gigabit over fast ethernet. Sure, you're not saturating the gig pipe, but you're certainly getting your money's worth.

      Visualize it this way: you COULD wait about 15 minutes to transfer a DVD9 over fast ethernet, or you could max out your hard drive over gig ethernet and take only 3 minutes.

      And when you consider that you could be maxing out your hard drive transfer rate while simultaneously browsing the net, and listening to streaming audio, all without maxing out gigabit, you can see the real-world benefits. Given that most motherboards come with gigabit onboard these days, it's most definitely worthwhile.

      --

      Man is the animal that laughs.
      And occasionally whores for Karma.

    7. Re:WTF? How is it nonsensical? by justins · · Score: 1
      Of what good is a 1Gb/s ethernet connection to a consumer if his hard drive can only read/write data at a peak rate of 400 or 500 Mb/s ? The speed of the LAN is irrelevant at that point.

      There's this thing called "disk caching." Maybe you've heard of it. On servers these days there are many cases where pretty much everything you'll ever want to serve off the disks can be cached in memory, which totally removes disk I/O speed as a bottleneck.

      Also, you're assuming that everything I ever might want to serve is going to be read off a disk first. I can't imagine why.
      --
      Now before I get modded down, I be to remind whoever might read this that what I am saying is FACT. - bogaboga
  19. Thank you! by debest · · Score: 1

    This is just what I was going to post. Around here, it seems very few can relate to technology that doesn't make sense to a home PC.

    Faster network speeds can only improve the computing state of the art, as tech from big hardware trickles down to stuff we can afford to buy ourselves after a time.

    --
    Look at the tomato! Isn't it sad? He can't dance! Poor tomato!
  20. put a switch in Langley VA by peter303 · · Score: 1

    Just think how much more of the InterNet the NSA can tap with these!

  21. Wouldn't help a bit right now... by tgd · · Score: 1

    I've got a 15mbit connection at home, and its rare I see a transfer get that high. Once in a while I'll get an average speed around 1.1mb/sec but to max out the connection I have to hit a very unused server that is very close to me.

    Until the places you want to connect to can handle that sort of load, wired network is just fine. Considering my house is all gigabit without fiber, it'll be a LONG time before the connection out of my house outstrips the speed of the network inside.

  22. Impractical by Anonymous Coward · · Score: 0

    I couldn't even peruse porn that quickly

  23. Not practical. by xtrvd · · Score: 1

    The problem with fibre to the desktop is that it is so expensive to terminate and too fragile to put behind Joe-User's computer. When he starts moving his cables around and bends the fibre, the fibre cable will break internally and will need a replacement. These replacement fibre cables are not cheap, and are far more expensive than Cat6 cables.

    The best method of incorporation is simply to have a fibre backbone to the horizontal cross-connect of the facility (Or the local Switch in a small environment), and then have copper running from the switch to the user's desktop.

    In this scenario, when Joe-User bends his 'internet cable' in half, he only increases attenuation, and perhaps will need a new $2.00 2metre Cat6 patch cord to support the 10Gbps coming from his wall jack.

    This solution is far cheaper and accomodates for the common problems with workstation cables.

    -Jesse

  24. Damn by jd · · Score: 1

    I was hoping there was a chance of 100 gigabits to the home, or at least the one gigabit the Japanese get to their homes. Who cares what hard disks can handle, if you're using streamed media, Grid Computing or just an old-fashioned RAM disk? (Besides, if you use multiple hard drives in a striped array, you can get far higher throughput than from a single drive.)

    --
    It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
  25. confused by wwmedia · · Score: 1

    just out of interest, will this 100gigabit networks run on Cat6 or Fibre??

    could anyone please enlighten me, i couldnt find much info, thanks

    1. Re:confused by Bananatree3 · · Score: 2, Informative

      Most likely 100Gbit will run on Fiber Cables, which have MUCH more bandwidth than their copper-based equivelents (Cat6,etc.)Wikipedia says that they have the potential to carry terabits of data per second.

      For the ethernet cables, according to wikipedia, Cat6 is reliable up to 1Gbit connections. However, Category 7 cables have been developed for 10Gbit connections. It seems to me that it might be possible to push ethernet cables up to 100Gbit. But that is a BIG if, as I don't know how much further the standard RJ-45 cables can be pushed beyond Cat7.

    2. Re:confused by digitalsushi · · Score: 1

      It might run on copper but if it does it will probably be parallel.

      You can run 10 gig ethernet over copper for a few inches. You can run it about 45 feet if you channelize it like they do with CX4. It's four lanes of copper, each 3 and 1/8 gigabits a second.

      The next Ethernet is more likely going to be 40 gigabits. They will just take the 802.11ae Clause 49 PCS, which is a serialized 64 to 66 bit data stream, and multiply it by 4 to get 4 times the throughput. Google around for 40 gig ethernet and you will find a lot more than this 100 gig stuff. Yes it's a deviation from the norm, but that's the plan more people are on.

      I personally find it fascinating that I can take 80 km of fiber and have all my packets going in come out the other end. But I can't name companies.. that is forbidden. :D

      --
      slashdot: where everyone yells sarcastic metaphors to themselves to understand the issue
  26. Uses for 100Gb by soldack · · Score: 1

    I used to work in the InfiniBand space where folks are using host adapters at 20 Gbit (4X, Double Data Rate). Some of the big server vendors are doing 30 Gb (12X Single Data Rate) host adapters. With all of this host speed it is only a matter of time before the switch to switch links will go up in speed.
    High speed systems like this are getting used in high performance computing to build larger clusters. Having faster switch links will allow these fabrics to be created with less switches and thus less hops from node to node and thus lower latency. Latency is probably the most important factor in the performance of a HPC cluster. It doesn't stop here...IB defines up to Quad Rate Rate 12X (120 Gbit). The HPC market is growing very well and the ethernet folks want a bigger piece of the high end of this market.
    Systems with this high level of speed are also used in big telco setups. With broadband becoming increasing popular and bandwidth increasing, the telcos need to have higher end equipment in their core.

    --
    -- soldack
  27. copper vs mm fiber vs sm fiber by j1m+5n0w · · Score: 1
    I would guess they would use fiber, since copper just doesn't have that much data capacity (maybe with coax it could be done, but at any rate it would likely require expensive cabling and only work for short distances). Fiber is much better for this sort of thing.

    A more interesting question is whether to use singlemode or multimode fiber, if they go that route. Most "normal" lan hardware uses multimode, which in general is good for connections of tens of gigabits over distances of 2km or less. Singlemode fiber, on the other hand, can be used over much longer distances (100km between repeaters, multiple terabits are possible over a single pair using DWDM; SM fiber is commonly used by the telecommunication industry for long-range communication). Singlemode fiber is about equally expensive with multimode, but a little bit more difficult to terminate. The endpoint hardware, though, is more expensive for singlemode (they use lasers instead of leds, I believe) for equivalent speeds, so despite having ~100 times the capacity and ~50 times the range, singlemode is rarely used for links that don't need it.

    1. Re:copper vs mm fiber vs sm fiber by Khyber · · Score: 1

      I would guess they would use fiber, since copper just doesn't have that much data capacity (maybe with coax it could be done, but at any rate it would likely require expensive cabling and only work for short distances)

      And just what metal do you think coax cables are made from, hrm?

      --
      Still waiting on Serviscope_minor to wake up to fucking reality and realize that Jessica Price isn't going to fuck him.
    2. Re:copper vs mm fiber vs sm fiber by j1m+5n0w · · Score: 1
      And just what metal do you think coax cables are made from, hrm?
      I wasn't trying to imply that coax was not made of copper, though I can see how it may appear that I was. I am sorry for the confusion, I was merely trying to indicate the conditions under which copper might work. At any rate, I don't think connecting servers together with, say, garden-hose sized LMR-600 cables and nics with N-connectors instead of RJ-45 jacks is going to be the wave of the future, though it is amusing to contemplate. (Does anyone know how the bandwidth and/or Shannon limit for various types of coax compares to that of twisted pair?)
  28. Forget the internal bus speed. by Khyber · · Score: 1

    What's the current speed that our hard drives are able to do, symmetrically? If we don't have the ability to access and transmit our data that fast at the time, what's the need?

    --
    Still waiting on Serviscope_minor to wake up to fucking reality and realize that Jessica Price isn't going to fuck him.
    1. Re:Forget the internal bus speed. by default+luser · · Score: 1

      Well, just like the grandparent indicated, this is a standard being developed solely for the datacenter, and most likely only for trunk lines between datacenters.

      Companies like ethernet because it is scalable. The same 10Gb trunk lines can, through a simple switch, talk to 1Gb data closets, which can talk to 100Mb clients. The scalability is key because copper is cheap, but doesn't run well at long distances above 1Gb. Faster ethernet standards such as 10Gb ethernet are limited to 15m for copper (10GBASE-CX4), so 10Gb ethernet is usually run over fiber for long distances, and over copper only inside the datacenter itself.

      I would expect 100Gb ethernet to have similar limitations...in fact, I would be amazed if it had a copper standard at all. But it will mean 10x faster data per trunk line, and when you're a fortune 500 company with 200 thousand employees spread out over 20 states and 10 countries, the idea of increasing your bandwidth 10-fold is music to your ears.

      --

      Man is the animal that laughs.
      And occasionally whores for Karma.

  29. What about wavelengths? by cazzazullu · · Score: 1

    Just a random thought that popped up in my mind: The speed of light is 3*10^8 m/s, and you want to send a bitstream of 10^11 bit/s. If we forget that the actual speed of an electrical pulse is lower than the speed of light, this results in a mean travellenght of 0.003m, or 3 millimeter per bit. So in my utp-cable I will have a bit travelling through it every few millimeters. Isn't this going to cause severe trouble when e.g. one of the eight wires is a bit longer than the rest? Or how tight will you need to twist the cable then, to avoid self-induction? Even with fiberglass this might give trouble I think (e.g. a longer travellenght on the outside of a curve compared to the inside).

    --
    int main(void) {while(1) fork(); return 0;}
  30. this is great, but... by slackaddict · · Score: 1
    Current networking technologies are already a lot faster than what is commercially available from the phone and cable companies. It's not going to help you much if you have a 100Gbit NIC but only a 5Mbit internet connection. You're really only going to see this benefit you if you play a lot of games over a LAN or for businesses that need a high bandwidth LAN, IMHO.

    --
    ConsultingFair.com