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40G is coming! What is fact – what is Hype? Status Quo in Standardization

40G is coming! What is fact – what is Hype? Status Quo in Standardization. Gerd Backhaus Marketing Manager D-A-CH. Agenda. Cabling in DCs Topology , requirements , trends Lessons learned from 10G …40G over twisted pair!... how ? Requirements / proposals from IEEE, ISO/IEC, TIA

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40G is coming! What is fact – what is Hype? Status Quo in Standardization

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  1. 40G is coming!What is fact – what is Hype?Status Quo in Standardization Gerd Backhaus Marketing Manager D-A-CH

  2. Agenda • Cabling in DCs • Topology, requirements, trends • Lessonslearnedfrom 10G • …40G overtwisted pair!...how? • Requirements/proposalsfrom IEEE, ISO/IEC, TIA • Whichconnector?

  3. 40GBase-T …what‘sgoing on? Cat 8? Cat 8.1? Cat 8.2? Channel I ? Channel II ? 1600 MHz? 2000 MHz?

  4. Standardization committees (examples)

  5. 10G Cu.-Cablingrequirementsfordatacenters ISO 24764 “6.2.2 Balanced cabling The main distribution and zone distribution cabling shall be designed to provide a minimum of Class EA channel performance as specified in ISO/IEC 11801.” Component Choice for Twisted Pair: Category 6A components provide Class EA balanced cabling performance; Category 7 components provide Class F balanced cabling performance; Category 7A components provide Class FA balanced cabling performance. TIA-942 “ 7.3.4   Recognized media (for DCs) · 4-pair 100-ohm balanced twisted-pair cable (ANSI/TIA-568-C.2) – category 6 or category 6A, with category 6A recommended” Component Choice for Twisted Pair: Category 6Acomponents provide balanced cabling performance;

  6. UTP cablingrequiresAlien Xtalk Tests • Cat6A F/UTP Test • Verygoodheadroom • Cat6A U/UTP Test • Close tothelimits Cat.6A U/UTP makes a complex (expensive) chip-architecturenecesarry! • Test configuration: • 2-C link, 6&1 bundle, length 50m/each, tightbundle, nopatchcords

  7. DC CablingTOR vs. EOR TOR EOR • Switch in each Server Rack (oradjacent) connected via Fibre Uplinks • Connection to Server via Fibre orCopper Patch Cord (1-2m) orveryshort CC Link (3m) • LessCabling, More Switches • Benefits: • Scalable (withexchangeof TOR switch) • Little Cabling (48 Fibresto a Rack) • Disadvantage • Oversubscription • Upgrade Cost • CongestionwhenIntraRacktraffic • Switch atthe end ofRow • Connection to Server via 2 Connector / 3 Connector Twisted Pair Cabling Channel (20-30m) • More Cabling , Fewer Switches • Benefits: • Interoperabilityof Equipment byuseofinternationallystandardisedcoppercabling • Allowsall topologies • Less expensive to Upgrade ifcorrectlydesigned • Disadvantages • AmountofCables (depend on Topologyused) • Scalability (depends on cabling grade used)

  8. Another aspect…Required distances in DCs In DCs shorter lengths are dominant >80% ofthelengthsare not longerthen 30m

  9. Lessons learned from 10G

  10. Lessonslearnedfrom 10G

  11. IEEE expectationsfor 40G Group Spirit best expressed by http://www.ieee802.org/3/bq/public/may13/booth_01_0513_40GBT Former project manager for 10GBase-T Leader of AD-HOC Channel Modelling IEEE802.3bq Working Group

  12. 40GBase-T challenges… Cablingrelated! 13

  13. Which cabling system willsupport 40Gand...Is TIA Cat8 better than ISO Cat7A?

  14. TP components for 40G • TP Definition started in September 2012 • 4 pairscable, not multilane • High Density: 48 ports/HU • Speed: 40G • 2 connector link only • Nosupportof 100m distance -> 30m

  15. TIA Next gen / „US Cat.8“ TIA Cat8 -> positive ACR upto 800 MHz Cat7Aenhancend/CHII/8.2 -> positive ACR upto 2000MHz

  16. During its meeting the week of June 17, the TIA TR-42.7 Copper Cabling Subcommittee “accepted the concept of adding ISO/IEC Class II cabling performance criteria” into its pending ANSI/TIA-568-C.2-1 category 8 project!!! Big surpriseat TIA MEEting,june 2013:

  17. Comparison: Classes/Categories TIA vs ISO/IEC *Category 8.1 and TIA Cat.8 are NOT backwardcompatibleto Class FA

  18. Comparisonof different proposals TIA vs ISO/IEC ISO isequalormoreperformantthen TIA in Class I already Andlookingat Class II….thisis a muchhigherleague!

  19. Which connector will make the running?

  20. Three different variants: • 1.) RJ45 (enhanced) – IEC 60603-7-81 • 2.) Tera(enhanced) – IEC 61076-3-104, Ed.3 • 3.) GG45 (enhanced) – IEC 60603-7-82 • IEC 60603-7-82 issupportedby: • Belstewart (ARJ45) • Panduit (S-RJ45) • Nexans (GG45) (Panduit) PossibleconnEctorsfor 40G

  21. GG45™ - functionallity Four additional GG45™ highspeedpins for Class F/ FA Eight RJ45 pins 100% Class D/E/EA backwardcompatible GG45™ Interface

  22. Components for 40G ? • connector: • IEC60603-71 • cable: • Cat.7A S/FTP cable • 1000/1200/1600 MHz

  23. = Cat.7Acable with GG45 jacks = Cat.5, 6 or 6A patch cords with RJ45 Migration path with GG45 today: Equipment requires RJ45 connections 10G 10G

  24. = Cat.7Acable with GG45 jacks = Cat.7Apatch cords with GG45 plugs Migration path with GG45 In future: New 40G hardware ...connected with GG45 cords 40G 40G

  25. I. Concludingconsiderationsto 40G IEEE probably will makedecisionfor 40GBase-t thisyear ISO and TIA will followlater (2015?) Design aroundlength <30m Coppercablingenables EEE savings Todays Cat7A areoftenbetterthenthenrequired due tothestandards GG45 istriedandtestedsinceyears – andisthemost elegant wayfor a 40G migration

  26. II. Concludingconsiderationsto 40G • …extendeddrivedistances…morethan 30m? • …let‘sseewhattheindustry will offer in thefuture • Will Channel II/Cat 8.2 support 100m for 10G …ofcourse!

  27. Test setup

  28. Further Informations: Please find ourwhitepapersandother info here: www.nexans.co.uk/lansystems Gerd.Backhaus@nexans.com Thanksforlistening? Questions???

  29. Workshop http://www.youtube.com/watch?v=GT9Af7W5IPI http://www.youtube.com/watch?v=up636JoRF4k

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