2. WLCG Networking Tony Cass, Edoardo Martelli 11 th April 2015

3. Outline Parochial CERN issues LHCONE/LHCOPN IPv6 SDN … 3 11 th April 2015 WLCG Networking

4. Outline Parochial CERN issues LHCONE/LHCOPN IPv6 SDN … 4 11 th April 2015 WLCG Networking

5. Mobile Telephony Changes Swisscom replaces Sunrise as our mobile telephony operator from 1 st July * +41 (0)76 487 xxxx  +41 (0)75 411 xxxx * CERN-wide switch over may be earlier to avoid leap second introduction. The exact date will be agreed with the LHC operations coordination team. 5 11 th April 2015 WLCG Networking

6. Wi-Fi Plans No further expansion of 802.11n coverage. Campus wide 802.11ac rollout planned * Controller-based “wave 2” solution. One access point per 3 offices. Dedicated Cat 6a cabling. RF survey underway Market Survey underway Hardware selection in December 2015 (March 2016). Deployment in 2016/7. 6 11 th April 2015 WLCG Networking * But not funded.

8. Computer Centre Network Changes 8 11 th April 2015 WLCG Networking

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14. Geneva Datacentre Wigner Datacentre 200 Gbps T0-T1s network T1s-T2s network Internet 210 Gbps100 Gbps 80 Gbps 120 Gbps 20 Gbps 40 Gbps CMS LHCb ATLAS ALICE

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17. Outline Parochial CERN issues LHCONE/LHCOPN IPv6 SDN … 17 11 th April 2015 WLCG Networking

19. 11 th April 2015 WLCG Networking

21. 21 11 th April 2015 WLCG Networking https://twiki.cern.ch/twiki/bin/view/LHCONE/LhcOneAup

22. Outline Parochial CERN issues LHCONE/LHCOPN IPv6 SDN … 22 11 th April 2015 WLCG Networking

23. IPv6 23

24. Outline Parochial CERN issues LHCONE/LHCOPN IPv6 SDN … 24 11 th April 2015 WLCG Networking

25. SDN openlab project established with Brocade “Goal of the project is to build an intelligent system that can optimize the routing of data traffic entering and leaving an organization and drop network attacks. The optimal routing or drop will be decided based on the information coming from the network itself, from a database of trusted applications and other data sources, like black-lists of known threats.” 25 11 th April 2015 WLCG Networking

26. SDN Network use evolution Network Engineers are investigating interesting solutions. But are these of use to you? How would you really use P2P? Do you care with today’s bandwidth? What are your problems? 26 11 th April 2015 WLCG Networking

27. CDN4LHC Physics requirements? reduced load on long distance links improved performance for poorly connected sites Solutions? cache servers placed in strategic locations of the Internet or LHCONE, a la Google cache or Akamai (i.e. based on peerings rather than geolocalisation) [ipv6] multicast: datasets continuously streamed into multicast groups solution yet to be designed and developed! 27 11 th April 2015 WLCG Networking

28. Central Task Queue Site A Site B Site C Shared Image Repository (VMIC) User VO service Instance requests Commercial cloud Payload pull Image maintainer Cloud bursting Slide courtesy of Ulrich Schwickerath