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SAHARA and OASIS Overviews NTT MCL Visit November 6, 2003

SAHARA and OASIS Overviews NTT MCL Visit November 6, 2003. Randy H. Katz Computer Science Division Electrical Engineering and Computer Science Department University of California, Berkeley Berkeley, CA 94720-1776. Presentation Outline. 1000-1030 Overview of Sahara and Oasis Projects, Randy

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SAHARA and OASIS Overviews NTT MCL Visit November 6, 2003

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  1. SAHARA and OASIS OverviewsNTT MCL VisitNovember 6, 2003 Randy H. Katz Computer Science Division Electrical Engineering and Computer Science Department University of California, Berkeley Berkeley, CA 94720-1776

  2. Presentation Outline 1000-1030 Overview of Sahara and Oasis Projects, Randy 1030-1050 Authenticated Roaming in Hot Spot Networks, Ana 1050-1110 BGP Health Monitoring, Matt 1110-1130 RouteVM: A Framework for Programming Programmable Network Elements, Mel 1130-1145 Programmable Network Testbed, George 1145-1200 iSCSI Performance Experiments, Li

  3. The SAHARA Project • Service • Architecturefor • Heterogeneous • Access, • Resources,and • Applications

  4. New Opportunity:Services-Enabled Network • New things you can do inside the network • Connecting end-points to “services” with processing embedded in the network fabric • “Agents” not protocols, executing inside the network • Location-aware, data format aware • Controlled violation of layering • Distributed architecture aware of network topology • No single technical architecture likely to dominate: interworking plus overlays

  5. SAHARA “Elevator” Statement • Problem • Achieving end-to-end services with desirable, predictable, enforceable properties spanning potentially distrusting service providers • Approach • Service composition and inter-operation across separate admin domains, supporting peering and brokering, and diverse business, value-exchange, access-control models • Current Focus • Interdomain routing, overlay networks, p2p algorithms • Interoperator WLAN roaming and authentication • Potential Impact • Effective way to more rapidly extend and deploy enhanced network functionality

  6. Service Composition Layered Reference Model for Service Composition End-User Applications Applications Services Application Plane Middleware Services End-to-End Network With Desirable Properties Enhanced Paths (Inter-domain) Overlay Network “Links” Connectivity Plane Enhanced Links (Intra-domain) IP Network

  7. Routing as a Composed Service • Routing as a Reachability “Service” • Paths between composed service instances--“links” within an overlay network • Multi-provider environment, no centralized control • Desirable Enhanced Properties • Context Awareness: discovery/exploitation of net relationships • Agility: converge quickly in response to global changes to retain good reachability “performance” • Trust: verify believability of routing advertisements • Performance: “guaranteed” bandwidth and latency • Reliability: detect service composition path failures quicklyto enable fast recomposition to maintain E2E service • Scalability and Interoperability: Adapt protocols via processing between admin domains

  8. Recent Progress • Inter-WLAN Roaming and Authentication (Ana) • BGP Control Plane • Verifiable BGP: Listen and Whisper • Root Cause Analysis of Routing Failures (Matt) • Detection of Shared Points of Congestion • Etiquette for Overlay Networks • Fast Recovery for P2P Networks

  9. The OASIS Project • Overlays and • Active • Services for • Internetworked • Storage

  10. New Opportunity:“The NETWORK is the Computer” • Rise of Programmable Network Elements • First Gen Network Appliances, Directors • Storage Virtualizers, Intrusion Detectors, Traffic Shapers, Server Load Balancers, MIE accountants • Next Gen: Third Party Programmable beyond rules • Needed: Generalized PNE programming and control model • Generalized “virtual machine” model for this class of devices • Retargetable for different underlying implementations • Applications of Interest • Network Services: L7 switching, firewalls, intrusion and infected machine detection, storage virtualization, network monitoring and management, etc. • Particular focus: network storage, iSCSI support

  11. F5 Networks BIG-IP LoadBalancer Web server load balancer Network Appliance NetCache Localized content delivery platform Packeteer PacketShaper Traffic monitor and shaper Cisco SN 5420 IP-SAN storage gateway Ingrian i225 SSL offload appliance Nortel Alteon Switched Firewall CheckPoint firewall and L7 switch Cisco IDS 4250-XL Intrusion detection system NetScreen 500 Firewall and VPN Extreme Networks SummitPx1 L2-L7 application switch Proliferation of Network Appliances In-the-Network Processing: the NETWORK is the Computer

  12. OASIS “Elevator” Statement • Problem • Common programming/control environment for diverse network elements to realize full power of “inside the network” services and applications • Approach • Software toolkit and VM architecture for PNEs, with retargetable optimized backend for diverse appliance-specific architectures • Current Focus • Network health monitoring, protocol interworking and packet translation services, iSCSI processing and performance enhancement, intrusion and worm detection and quarantining • Potential Impact • Open framework for multi-platform appliances, enabling third party service development • Provable application properties and invariants; avoidance of configuration and “latest patch not installed” errors

  13. Buffers Buffers Buffers Input Ports Output Ports CP CP CP CP CP CP AP CP Interconnection Fabric Action Processor Classification Processor Generic PNE Architecture Tag Mem Rules & Programs

  14. OASIS Testbed • Current Testbed • Alteon Filter Programmable Level 7 Switches • Next generation significantly more third party programmable • 2 x Enterprise Class Routers • (Many) pizza box PCs • In discussion • Nortel + IBM on Blade Center Storage Servers for UDCs • Cisco IOS Next Generation (ION) Programmable Packet Filters

  15. Recent Progress • RouteVM PNE Specification (Mel) • Oasis Testbed Development (George) • iSCSI Storage Experiments (Li) • Intrusion Detection Case Study

  16. Server Client Distributed Middleware Distributed Middleware Router Router Internet IP Network Reliable AdaptiveDistributed SystemsFox, Jordan, Katz, Necula, Patterson, Stoica, Tygar User Operator “Reactive Systems” Observe, Classify, Learn, Act Programming Abstractions For Roll-back SLT Services Crash-Oriented Svrcs Observation Infrastructure forSystem SLT Observation &Control Points Verifiable Protocols Fast Detection & Route Recovery ObservationInfrastructure for network SLT PNE PNE Application- Specific Overlay Network Edge Network Edge Network Commodity Internet

  17. SAHARA and OASISRandy H. KatzThank You!

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