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WLCG Network Outlook

WLCG Network Outlook. By Edoardo Martelli with input from and interpreted by Tony Cass. Development before Run 2. Responsibility for the transatlantic links moves from Caltech to ESnet. CERN developments before LS2. 40G for server connections

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WLCG Network Outlook

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  1. WLCG Network Outlook By Edoardo Martelli with input from and interpreted by Tony Cass

  2. Development before Run 2 • Responsibility for the transatlantic links moves from Caltech to ESnet.

  3. CERN developments before LS2 • 40G for server connections • Top of the rack switches with 100G uplinks • Distributed and Layered Firewalling • NaaS over single network infrastructure • 100G links to Tier1s • 100G to Geant • Major hub for fibres to Europe

  4. WLCG developments before LS2 • LHCONE reaching more remote sites • Major Tier1/2s adopting 100G • Improved monitoring infrastructure

  5. Beyond LS2: technologies • 10GbaseT on laptops • >1G Wi-Fi everywhere • Cheap 100G • 400G-1000G for interconnection links • Wide IPv6 adoption

  6. Beyond LS2: Possible use of SDN • fine grained security policies • best path for large flows • intelligent load balancing

  7. Beyond LS2: computing model From Tier1/2/3 to Storage/Processing Storage: - full data set per continent - local caches in every site - “HSM across the network”.

  8. Beyond LS2: possible use of IPv6 Data distribution - Storage-Network integration - IPv6 address/subnet as data-file/file-set ID - Anycast routing for optimal data distribution

  9. Upcoming Ethernet • 100G for top of the rack switches • 400G for datacentre interconnections • 40G-100G for high end servers • 10GbaseT for commodity servers • 1Tbps after 2020

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