Service Delivery Network

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  • Service Delivery Network

    1. 1. Francesco Masci Sun’s Solution for Designing Dynamic Service-Optimized Network Architecture: The Service Delivery Network (SDN)‏
    2. 2. SDN Goal <ul><li>Service delivery at any time, from anywhere, to any device </li></ul><ul><li>Approach: consists of basic network building blocks, common network design patterns, integrated network components, and industry best practices </li></ul><ul><li>Provide: a set of network connectivity, routing, load balancing, and advanced security mechanisms </li></ul><ul><li>Purpose: flexible network infrastructure designs that provide high performance, scalability, availability, security, flexibility, and manageability </li></ul>
    3. 3. Services... (in SOA context)‏ <ul><li>Def : is an implementation of well-defined business functionality </li></ul><ul><li>Characteristics </li></ul><ul><ul><li>self-contained (perform predetermined tasks)‏ </li></ul></ul><ul><ul><li>loosely coupled (for independence) </li></ul></ul><ul><ul><li>can be dynamically discovered </li></ul></ul><ul><ul><li>have well defined interfaces and functions (for modularity)‏ </li></ul></ul><ul><ul><li>can be aggregated to build composite services </li></ul></ul>
    4. 4. SDN Type of services <ul><li>End-User Services (Presentation Tier)‏ </li></ul><ul><ul><li>Provided directly to end-users </li></ul></ul><ul><ul><li>Web, e-commerce, e-mail, collaboration </li></ul></ul><ul><li>Supporting Services (Integration and Resource Tier)‏ </li></ul><ul><ul><li>Directly support end-user services but are not visible </li></ul></ul><ul><ul><li>Web or Application container, </li></ul></ul><ul><li>Infrastructure Services (Management Tier)‏ </li></ul><ul><ul><li>Ease internal operation and support </li></ul></ul><ul><ul><li>internal DHCP, DNS, security or directory services </li></ul></ul>
    5. 5. SDN core design components represent the smallest, irreducible component within the pattern or architecture. These building blocks are assembled to provide systemic functionality. is defined as a generalized, reusable design solution to a recurrent network architecture design problem. An instance of a microarchitecture is the network design that results from applying the SDN methodology to a specific organization’s stated business and technical requirements
    6. 6. SDN Microarchitecture components
    7. 7. Phases in SDN Methodology <ul><li>Select Products </li></ul><ul><li>Select Building Blocks </li></ul><ul><li>Select Patterns </li></ul><ul><li>Design the Logical Architecture </li></ul><ul><li>Define the Business Requirements </li></ul><ul><li>Define the Functional Requirements </li></ul><ul><li>Define the Service-Level Objectives </li></ul>
    8. 8. SDN Methodology Messaging infrastructure Case Study
    9. 9. Phase 1: Context <ul><li>Business Requirements </li></ul><ul><ul><li>The e-mail service must use protocols, such as SMTP, IMAP, POP3, HTTP </li></ul></ul><ul><ul><li>Users must be able to use an e-mail client or a WebBrowser to access their e-mail </li></ul></ul><ul><li>Functional Requirements (components)‏ </li></ul><ul><ul><li>Messaging mail proxies </li></ul></ul><ul><ul><li>Messaging server </li></ul></ul><ul><ul><li>Directory servers </li></ul></ul><ul><ul><li>Mailbox store </li></ul></ul><ul><li>Service-Level Objectives (SLO) -> SLA </li></ul><ul><ul><li>Availability: 99,99% </li></ul></ul><ul><ul><li>Scalability: 2000 total subscriber </li></ul></ul><ul><ul><li>Latency: no greater than 5 second response time for e-mail access </li></ul></ul>
    10. 10. Phase 3 – Strategies <ul><li>Product selection and relations </li></ul>
    11. 11. Phase 3 – Building Blocks <ul><li>Define the Service Component Types </li></ul>
    12. 12. Phase 3 – Building Blocks <ul><li>Mapping Service Components to Service Domains </li></ul>
    13. 13. Phase 3- Select Pattern <ul><li>Service Module Design Pattern or Logical Service Domain </li></ul>
    14. 14. Phase 3 – Logical Architecture <ul><li>diagram shows the relationships among the service domains, Intelligent Service Routing (which provides the network path between the service domains), service delivery interface, and secondary access networks (used for integration)‏ </li></ul>
    15. 15. Phase 4 – Mail Solution design L4-7
    16. 16. Phase 4 – Mail Solution design L3
    17. 17. Phase 4 – JES Solution design
    18. 18. Phase 4 – JES Solution design
    19. 19. Francesco Masci [email_address]

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