WLCG Networking Tony Cass, Edoardo Martelli 11 th April 2015

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

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

Mobile Telephony Changes Swisscom replaces Sunrise as our mobile telephony operator from 1 st July * +41 (0) xxxx  +41 (0) 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 th April 2015 WLCG Networking

Wi-Fi Plans No further expansion of n coverage. Campus wide ac 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/ th April 2015 WLCG Networking * But not funded.

Computer Centre Network Changes 8 11 th April 2015 WLCG Networking

9 11 th April 2015 WLCG Networking

10 11 th April 2015 WLCG Networking

11 11 th April 2015 WLCG Networking

12 11 th April 2015 WLCG Networking

13 11 th April 2015 WLCG Networking

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

16 11 th April 2015 WLCG Networking

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

11 th April 2015 WLCG Networking

21 11 th April 2015 WLCG Networking

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

IPv6 23

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

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.” th April 2015 WLCG Networking

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? th April 2015 WLCG Networking

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! th April 2015 WLCG Networking

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