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

2. Date et page. 2 Agenda Cabling in DCs Topology, requirements, trends Lessons learned from 10G …40G over twisted pair!...how? Requirements/proposals from IEEE, ISO/IEC, TIA Which connector?

3. Date et page. 3 40GBase-T …what‘s going on?

4. Date et page. 4 IEEE IEEE 802.3an 10GBase-T ISO/IEC ISO/IEC 11801 Cat.5, 6, 6 A, 7 + 7 A Class D-E-E A -F-F A Cenelec Cenelec EN50173 Cat.5, 6, 6 A, 7 + 7 A Class D-E-E A -F-F A TIA TIA 568.C.2 Cat.5, 6, 6A Standardization committees (examples)

5. Date et page. 5 10G Cu.-Cabling requirements for data centers ISO 24764 “6.2.2 Balanced cabling The main distribution and zone distribution cabling shall be designed to provide a minimum of Class E A channel performance as specified in ISO/IEC 11801.” Component Choice for Twisted Pair: Category 6 A components provide Class E A balanced cabling performance; Category 7 components provide Class F balanced cabling performance; Category 7 A components provide Class F A 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 6A components provide balanced cabling performance;

6. Date et page. 6 UTP cabling requires Alien Xtalk Tests Cat6 A F/UTP Test  Very good headroom Cat6 A U/UTP Test  Close to the limits Test configuration: 2-C link, 6&1 bundle, length 50m/each, tight bundle, no patch cords Cat.6A U/UTP makes a complex (expensive) chip-architecture necesarry!

7. Date et page. 7 DC Cabling TOR vs. EOR Switch at the end of Row Connection to Server via 2 Connector / 3 Connector Twisted Pair Cabling Channel (20-30m) More Cabling, Fewer Switches Benefits: Interoperability of Equipment by use of internationally standardised copper cabling Allows all topologies Less expensive to Upgrade if correctly designed Disadvantages Amount of Cables (depend on Topology used) Scalability (depends on cabling grade used) Switch in each Server Rack (or adjacent) connected via Fibre Uplinks Connection to Server via Fibre or Copper Patch Cord (1-2m) or very short CC Link (3m) Less Cabling, More Switches Benefits: Scalable (with exchange of TOR switch) Little Cabling (48 Fibres to a Rack) Disadvantage Oversubscription Upgrade Cost Congestion when IntraRack traffic

8. Date et page. 8 DC Architecture 10GBase-T for line cards was long time too expensive – so TOR take over...

9. Date et page. 9 Another aspect… Required distances in DCs In DCs shorter lengths are dominant >80% of the lengths are not longer then 30m

10. Date et page. 10 Lessons learned from 10G

11. Date et page. 11 Lessons learned from 10G Lessons from 10GLessons for 40G 100m reach not requiredReduce reach to match market requirement <50m UTP Cable spec – Noise Sensititivy took time to overcome Shielded cable – ANEXT problem eliminated High PHY power consumption – Required 3 generations of silicon Reduce PHY power – less distance and less compensation : Positive ACR for increased frequency Window of opportunity missed (6 years) – enabled TOR Use current generation of silicon: reduces time to market

12. Date et page. 12 IEEE expectations for 40G Group Spirit best expressed by http://www.ieee802.org/3/bq/public/may13/booth_01_0513_40GBT 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

13. Date et page. 13 40GBase-T challenges… 13 Higher coding complexity Rel. lower frequencies Lower attenuation Longer Reach Complex chip design/ costs Cabling related! Lower coding complexity Higher frequencies Higher attenuation Shorter Reach Energy costs

14. Date et page. 14 Which cabling system will support 40G and... Is TIA Cat8 better than ISO Cat7A?

15. Date et page. 15 TP components for 40G TP Definition started in September 2012 4 pairs cable, not multilane High Density: 48 ports/HU Speed: 40G 2 connector link only No support of 100m distance -> 30m

16. Date et page. 16 TIA Next gen / „US Cat.8“ TIA Cat 8 -> positive ACR up to 800 MHz Cat 7 A enhancend/CHII/8.2-> positive ACR up to 2000MHz

17. Date et page. 17 BIG SURPRISE AT TIA MEETING, JUNE 2013: 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!!!

18. Date et page. 18 ISO/IEC Is similar to…TIA channel/ channelcomponents Class ECat 6 Class E A Cat 6 A Class ICat 8.1*Cat 8* Class F A Cat 7 A (no couterpart) Class IICat 8.2Class II Comparison: Classes/Categories TIA vs ISO/IEC *Category 8.1 and TIA Cat.8 are NOT backward compatible to Class F A *Category 8.1 and TIA Cat.8 are NOT backward compatible to Class F A

19. Date et page. 19 ParameterTIA Cat 8ISO Class IISO Class IIDifference (at 1GHz in dB)(RJ45) (GG45…Tera) TIA Cat 8 vs Cl II Return loss888 Insertion Loss2222,521,10,9 PS-NEXT16,516,644,928,4 PS-ACRF9930,121,1 PS-ANEXT70 PS-AACRF41 Comparison of different proposals TIA vs ISO/IEC ISO is equal or more performant then TIA in Class I already And looking at Class II….this is a much higher league!

20. Date et page. 20 Which connector will make the running?

21. Date et page. 21 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 is supported by: Belstewart (ARJ45) Panduit (S-RJ45) Nexans (GG45) (Panduit) POSSIBLE CONNECTORS FOR 40G

22. Date et page. 22 Eight RJ45 pins 100% Class D/E/E A backward compatible Four additional GG45™ highspeed pins for Class F/ F A GG45™ Interface GG45™ - functionallity

23. Date et page. 23 Components for 40G ? connector: IEC60603-71 cable: Cat.7 A S/FTP cable 1000/1200/1600 MHz

24. Date et page. 24 = Cat.7 A cable with GG45 jacks = Cat.5, 6 or 6 A patch cords with RJ45 today: Equipment requires RJ45 connections Migration path with GG45

25. Date et page. 25 In future: New 40G hardware...connected with GG45 cords = Cat.7 A cable with GG45 jacks = Cat.7 A patch cords with GG45 plugs Migration path with GG45

26. Date et page. 26 I. Concluding considerations to 40G IEEE probably will make decision for 40GBase-t this year ISO and TIA will follow later (2015?) Design around length <30m Copper cabling enables EEE savings Todays Cat7A are often better then then required due to the standards GG45 is tried and tested since years – and is the most elegant way for a 40G migration

27. Date et page. 27 …extended drive distances…more than 30m?  …let‘s see what the industry will offer in the future Will Channel II/Cat 8.2 support 100m for 10G …of course! II. Concluding considerations to 40G

28. Date et page. 28 Test set up

29. Date et page. 29 Further Informations: Please find our white papers and other info here: www.nexans.co.uk/lansystems Gerd.Backhaus@nexans.com Thanks for listening? Questions??? Thanks for listening? Questions???

30. Date et page. 30 Workshop http://www.youtube.com/watch?v=GT9Af7W5IPI http://www.youtube.com/watch?v=up636JoRF4k