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malcolm-tyson

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Scenario Grid Networks
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  1. Scenario Grid Networks Overlay networks impact to VPNs WP4 NOBEL

  2. The Grid Scenario • The CERN will use GRID technologies to make computations • Computers that will make computations and are located in • several type of networks, (Access, Metro, Core) • The network is owned and operated by one carrier, with • several domain • Several type of transmission is used (ADSL, Ethernet, SONET) • Virtual Private Networks are used (VPN L1, VPN L2, VPN L3) • GMPLS- networks are available • Results will be distributed to several Universities/Countries

  3. Background information of Grid networks • What is the GRID? Several explanations • “A Grid provides an abstraction for resource sharing and • Collaboration across multiple administrative domains…” • (Source: NGG Expert Group 16-Jun-2003 “European Grid • Research 2005-2010) Definition: • Analogy to the term „Power Grid“ • Consistent, pervasive, dependable, transparent access to ressources • Geographically dispersed • Seamless integrated computational and collaborative environment Difference to P2P: • Sometimes difficult (many similarities) • GRIDs are centrally managed • GRIDs are running in more trusted environments • See even chapter 3 in Deliverable 6

  4. Grid evolutions • GRID started in a local premises and will evolve to be a • global service oriented Grid with several types of applications • Local GRID (network 100Mb Ethernet) • Cluster GRID (network 1GbE) • Campus GRID (varying bandwidth) • Global GRID (varying bandwidth)

  5. EU Grid projects

  6. Some Grid links • http://www.nextgrid.org/ • http://www.nextgrid.org/publications.htm • CERN ( networking) • http://egee-sa2.web.cern.ch/egee%2Dsa2/ • https://edms.cern.ch/file/414132/2.1/DataGrid-07-D7-4-0206-2.0.doc • Requirements • http://egee-sa2.web.cern.ch/egee%2Dsa2/ • Global Grid links • http://www.ngs.ac.uk/ • Nasa Grid • http://www.nas.nasa.gov/About/legacy.html • Particle Physics Data GRID • http://www.ppdg.net/

  7. Grid network topology in Cern Source:http://egee-sa2.web.cern.ch/egee%2Dsa2/

  8. VPNs AND GRID IN NOBEL • Not much have been done in networking area of Grid. • The “BIG FAT PIPE” is asked between Grid sites • We in NOBEL should consider networking aspect • Such as: Dynamicity, Services, Network management, • Control plane, Service identification • To support GRID services VPNs are suitable if • - QoS is needed • - End-to-End protection • - Bandwidth reservations/adjustments • - Separation from other traffic is needed • - High availability

  9. Grid Network in one carrier domain Access network = Transport /VPN Corporate Network =Grid Computers Broadband Access network METRO Network Core network Enterprise network

  10. CPU Server Example : Cern HEP Network Topologyand bandwidth Tomorrow’s network topology Today’s network topology Gigabit Ethernet (WAN) 10 Gigabit Ethernet (WAN) Backbone Backbone 20 * 1000 Mbit/s 200 * 10000 Mbit/s Gigabit Ethernet 10 GBit Ethernet Disk Server Tape Server GBit Ethernet Fast Ethernet CPU Server Disk Server Tape Server

  11. Example of Grid Datafarm • Large scale parallel filesystem • Petabyte scale data computing • Example node: • 18 TB Storage • 6.6GByte/s transfer speed • 1 TFLOP/s

  12. Data Grid Requirements Overview • Applications • HEP – High Energy Physics • LHC – Large Hadron Collider • 12-14 PBytes/Year • Processing power of ~70.000 PCs needed • International connectivity > 10GBit/s • Biology and Medical Applications • Simulations (weather, business models, etc) • Earth Observation Applications • 100 GByte image data/day

  13. Control plane aspects • Signalling proposal • -RSVP signalling in VPN level • -NSIS(Next Steps In Signalling) signalling in GRID level • -Interface is needed between application signalling, resource • management and transport to make bandwidth adjustments.

  14. Management plane aspects in VPN • Resource monitoring in VPN tunnels • How to monitor ? • tunnel head • tunnel tail • transfer entries • QoS resources • Timers (hello intervals) • Errors between boundaries • Error notifications • Recovery functions • Policies

  15. MANAGEMENT- PLANE MANAGEMENT- PLANE USER- PLANE USER- PLANE CONTROL- PLANE CONTROL- PLANE Control and Management plane interaction • User plane send a request to get more bandwidth • The application signalling NSIS should have a signalling interface to Control plane in MPLS/GMPLS • RSVP informs management plane of changed bandwidth E-NNI NSIS control plane NSIS control plane RSVP-TE

  16. Service Identification • Network services and application service • can be identified by • a number (should be standardized) • a filter

  17. Requirements • Very high bandwidth needed • 100 MBit/s to 10/40 GBit/s • Long distances to cover (intercontinental) • Dynamic usage (BoD) • Dynamic topology between nodes • Depending on applications/scenarios bandwidth requirements are changing fast • Provisioning on demand • Point to Point and Point to Multipoint communication needed • Bulk data transfer • Streaming • Group communication • Reliable • Protection, Restoration

  18. How to continue • Collect and analyse requirements from GRID • Make estimation of traffic capacity • Design network topology • Analyse interaction with NM, VPN and GRID application • Expand the scenario in Multi carrier scenario