ARCHSTONE: Intelligent Network Services for Advanced Application Workflows
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The document outlines the development of advanced network services, focusing on a composable network service architecture and enhancements to the oscars framework, enabling intelligent network services that allow clients to query potential network topologies. It details new computational processes and algorithms for multi-layer topologies and service provisioning, supporting real-time reservations and co-scheduling requests across distributed resources. Additionally, it discusses the virtual network on demand (vnod) project, aimed at facilitating the creation of end-to-end virtual network topologies for optimized data transfer requests among multiple users and sites.
ARCHSTONE: Intelligent Network Services for Advanced Application Workflows
- 2. • USC/ISI • BNL • Tom Lehman • Dimitrios Katramatos • Xi Yang • Sushant Sharma • ESnet • Dantong Yu • Chin Guok • Eric Pouyoul • Inder Monga • Vangelis Chaniotakis • Bharath Ramaprasad (UMass) • UNM • Nasir Ghani • Feng Gu • Kaile Liang
- 4. • Network "Service Plane" formalization • Composable Network Service architecture • ARCHSTONE Network Service Interface as client entry point • Extensions to Topology and Provisioning Schemas to enable: • multi-layer topologies • multi-point topologies • requests in the form of a "service-topology" • vendor specific features • technology specific features • node level constraints • MX-TCE (Multi-Dimensional Topology Computation Engine) • Computation Process and Algorithms • Enable a New class of Network Services referred to as "Intelligent Network Services" • clients can ask the network "what is possible?" questions • can ask for "topologies" instead of just point-to-point circuits
- 5. • Advanced Network Service Interface • "Request Topology" and "Service Topology" concepts • Common Network Resource Description schema • Network Service Plane access point • Multi-Dimensional Topology Computation Element (MX-TCE) • High Performance computation with flexible application of constraints • Use OSCARSv6 as base infrastructure and development environment request Network Network Service Provider Requester Agent OSCARSv6 reply MX-TCE Network Resource Description
- 6. Network Services Interface Network Service Plane Composite Service (S1 = S2 + S3) Composite Service Composite Service (S2 = AS1 + AS2) (S3 = AS3 + AS4) Atomic Atomic Atomic Atomic Service Service Service Service (AS1) (AS2) (AS3) (AS4) Multi-Layer Network Data Plane
- 7. Topology Service to determine Security Service (e.g. resources and orientation encryption) to ensure data integrity Resource Computation Service* Store and Forward Service to to determine possible resources enable caching capability in the based on multi-dimensional network constraints (*MX-TCE) Measurement Service to Connection Service to specify enable collection of usage data data plane connectivity and performance stats Monitoring Service to ensure Protection Service to enable proper support using SOPs for resiliency through redundancy production service Restoration Service to facilitate recovery
- 8. • Extensions to OSCARS v0.6 • Added features for: • multi-layer topologies • multi-point topologies • requests in the form of a "service-topology" • vendor specific features • technology specific features • node level constraints • Result is a schema "Superset" to what OSCARSv0.6 now uses • schema with ARCHSTONE extensions will be backward compatible with current OSCARS operations • Uses perfSONAR Topology and Lookup Services
- 9. • MX-TCE role in OSCARS • perform basic path computation for current OSCARS service • standalone Topology Computation element to: answer "what is Client possible?" questions for clients to subsequently make request for Application OSCARS services • Advanced multi-layer and multi-point computations What topologies are available next week for 3 hour duration? Current OSCARS Service: Here's Two "Please try and reserve a 5 Gbps VLAN circuit between A and B at 15:00 on January 16, 2012 for 3 hour duration" MX-TCE Client Application can perform basic path computations as needed to respond to current OSCARS point-to-point VLAN service
- 10. java web service, C++ multi-threaded core
- 11. • Unified API/NSI support for P2P, Multi-Point, Multi-Layer, schedule and co-scheduling requests under extended NML schema • Implemented OSCARS PCE API to become swappable OSCARS module • support existing OSCARS PCE capability as a single TcePCE • support co-scheduling via optionalConstraint extension • Multiple path and topology computation workflows • kicked off based on request types: P2P, MP, MLN/MRN, coSheduling etc. and combinations • support concurrent requests through multi-threading • Modularized differentiated algorithm execution driven by workflows • Transform computation results into • provisioning friendly path object depending on path control scenarios • NSI and OSCARS compliant reply messages
- 13. • ARCHSTONE Extensions • Layer Decisions • Multi-Layer Topology Representations • driven by resource constraints or • Multi-Layer Topology Computations client requests for specific • Multi-Layer Provisioning performance characteristics (i.e. low latency, low jitter, etc)
- 14. • Prototype Deployment on Production Networks • ESnet and Internet2 • Real-time reservations being processed to provide answers to "what is possible?" questions that client can then use to make requests on the operational networks • VNOD project will discuss a specific use case for this Client Application coScheduleRequest: start time: Wed, 08 Feb 2012 05:00:00 GMT end time: Wed, 08 Feb 2012 07:00:00 GMT min bandwidth: 1 Gbps max number of path options: 3 format for reply: bandwidth availability graph OSCARS MX-TCE OSCARS real-time reservations feed from production networks
- 15. • archstone.east.isi.edu • Architecture and Design Documents • MX-TCE Software • Extensions to OSCARS Topology and Request Schemas • Example topology descriptions, service requests, service topologies (responses) • ANI Testbed configuration and use • OSCARSv0.6 project • code.google.com/p/oscars-idc/ • OSCARS ARCHSTONE Branch • oscars.es.net/repos/oscars/branches/archstone/
- 16. • Virtual Network On Demand (VNOD) is a project funded by DOE ASCR • Objectives: • To provide on-demand, end-to-end virtual network topologies dedicated to servicing communities of users at multiple end-sites • To facilitate the creation and management of such virtual network domains - VNOD GUI based front-end • To provide a platform for applying various optimization schemes with diverse objectives - Successfully schedule multiple, fixed and flexible, end-to-end data transfer requests between multiple end sites and hosts • Currently working on developing technologies to address the integration and co-scheduling across Network and Middleware level resources • This includes co-scheduling algorithms, protocols, and workflows which can operate in this "distributed heterogeneous multi-resource environment" • Leveraging TeraPaths and ESCPS for end-host and site communications and configurations • Future work will include integration with application specific workflows and systems • Utilizing ARCHSTONE Intelligent Network Services as part of co- scheduling workflows
- 17. End Site End Site End Site ESDC Transit WAN IDC Transit WAN Transit WAN End Site End Site
- 18. Topology Community Topology distributed auxiliary Community Service Membership Service Membership services service service Service Service Discovery Monitoring Discovery Monitoring Service Service ViNet request Resource Scheduler (RS) Resource Scheduler (RS) (application (selects and schedules (selects and schedules requirement resources) resources) profile) VNOD VNOD remote RSs remote RSs ViNet Controller (VNDC) ViNet Controller (VNDC) (creates and manages (creates and manages remote VNDCs ViNets) ViNets) remote VNDCs virtual networking layer virtual end-to-end path layer remote ESCPS remote ESCPS negotiation ESCPS ESCPS Negotiation OSCARS OSCARS with ARCHSTONE with ARCHSTONE Transit WANs End-Site LAN End-Site LAN
- 20. • VNOD workflow: • User requests a virtual domain setup via the front-end - Request can come from an application via the API - End-system resource availability (e.g., storage system bandwidth) can also be submitted for co-scheduling • The VNOD back-end: - Collects bandwidth availability information from domains involved in virtual path establishment • Interfaces with ARCHSTONE for WAN domains and TeraPaths/ ESCPS for end-sites - Runs scheduling algorithm(s) - Makes appropriate reservation requests based on algorithm output by engaging ARCHSTONE and TeraPaths/ESCPS
- 21. + End Site A + Transit WAN W1 Transit WAN W2 or + End Site or B + +
- 22. (a) (b) (c) (d)
- 23. Available Bandwidth (Gb/s) Step 1 10 Step 3 8 Step 0 Request #2 6 Step 2 4 Request #1 Request #3 2 Request #0 0 1 2 3 4 5 6 7 Time (secs)
- 24. • Implementation in progress • Increasingly difficult scheduling problems: • Single request/single path (TeraPaths/StorNet) • Multiple requests/single path/single WAN domain • Multiple requests/multiple paths/single WAN domain • Multiple requests/multiple paths/multiple WAN domains • Co-design with ARCHSTONE to attack scheduling complexities • Hierarchical scheduling (end-sites/WAN) • Tighter integration and interoperation
- 25. • The architecture adopted by ARCHSTONE, OSCARS, VNOD: • Centralized at the Intra-Domain level for resource management and service provisioning • Distributed at the Inter-Domain level for resource management and service provisioning • External topology distribution systems must limit the amount dynamic data exported (scalability and stability issues) • Resource identification for real-time service provision can only be done by local domain systems • Multi-domain service provision will require chain or tree mode protocols which include real-time negotiation/multi-phase commit features • "Intelligent Network Services" is the key capability that needs to be developed next to support co-scheduling across network, middleware, application domains – Network API needed to make service available to workflow engines • OpenFlow/Software Defined Networking offers a set of network capabilities which can enhance these "Intelligent Network Services" • but the "Intelligent Network Services" and co-scheduling technologies are the distinct and key value added feature set that we are addressing