Service Delivery Network

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Information about Service Delivery Network

Published on May 12, 2008

Author: ilgrosso

Source: slideshare.net

Francesco Masci Sun’s Solution for Designing Dynamic Service-Optimized Network Architecture: The Service Delivery Network (SDN)‏

SDN Goal Service delivery at any time, from anywhere, to any device Approach: consists of basic network building blocks, common network design patterns, integrated network components, and industry best practices Provide: a set of network connectivity, routing, load balancing, and advanced security mechanisms Purpose: flexible network infrastructure designs that provide high performance, scalability, availability, security, flexibility, and manageability

Service delivery at any time, from anywhere, to any device

Approach: consists of basic network building blocks, common network design patterns, integrated network components, and industry best practices

Provide: a set of network connectivity, routing, load balancing, and advanced security mechanisms

Purpose: flexible network infrastructure designs that provide high performance, scalability, availability, security, flexibility, and manageability

Services... (in SOA context)‏ Def : is an implementation of well-defined business functionality Characteristics self-contained (perform predetermined tasks)‏ loosely coupled (for independence) can be dynamically discovered have well defined interfaces and functions (for modularity)‏ can be aggregated to build composite services

Def : is an implementation of well-defined business functionality

Characteristics

self-contained (perform predetermined tasks)‏

loosely coupled (for independence)

can be dynamically discovered

have well defined interfaces and functions (for modularity)‏

can be aggregated to build composite services

SDN Type of services End-User Services (Presentation Tier)‏ Provided directly to end-users Web, e-commerce, e-mail, collaboration Supporting Services (Integration and Resource Tier)‏ Directly support end-user services but are not visible Web or Application container, Infrastructure Services (Management Tier)‏ Ease internal operation and support internal DHCP, DNS, security or directory services

End-User Services (Presentation Tier)‏

Provided directly to end-users

Web, e-commerce, e-mail, collaboration

Supporting Services (Integration and Resource Tier)‏

Directly support end-user services but are not visible

Web or Application container,

Infrastructure Services (Management Tier)‏

Ease internal operation and support

internal DHCP, DNS, security or directory services

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

SDN Microarchitecture components

Phases in SDN Methodology Select Products Select Building Blocks Select Patterns Design the Logical Architecture Define the Business Requirements Define the Functional Requirements Define the Service-Level Objectives

Select Products

Select Building Blocks

Select Patterns

Design the Logical Architecture

Define the Business Requirements

Define the Functional Requirements

Define the Service-Level Objectives

SDN Methodology Messaging infrastructure Case Study

Phase 1: Context Business Requirements The e-mail service must use protocols, such as SMTP, IMAP, POP3, HTTP Users must be able to use an e-mail client or a WebBrowser to access their e-mail Functional Requirements (components)‏ Messaging mail proxies Messaging server Directory servers Mailbox store Service-Level Objectives (SLO) -> SLA Availability: 99,99% Scalability: 2000 total subscriber Latency: no greater than 5 second response time for e-mail access

Business Requirements

The e-mail service must use protocols, such as SMTP, IMAP, POP3, HTTP

Users must be able to use an e-mail client or a WebBrowser to access their e-mail

Functional Requirements (components)‏

Messaging mail proxies

Messaging server

Directory servers

Mailbox store

Service-Level Objectives (SLO) -> SLA

Availability: 99,99%

Scalability: 2000 total subscriber

Latency: no greater than 5 second response time for e-mail access

Phase 3 – Strategies Product selection and relations

Product selection and relations

Phase 3 – Building Blocks Define the Service Component Types

Define the Service Component Types

Phase 3 – Building Blocks Mapping Service Components to Service Domains

Mapping Service Components to Service Domains

Phase 3- Select Pattern Service Module Design Pattern or Logical Service Domain

Service Module Design Pattern or Logical Service Domain

Phase 3 – Logical Architecture 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)‏

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)‏

Phase 4 – Mail Solution design L4-7

Phase 4 – Mail Solution design L3

Phase 4 – JES Solution design

Phase 4 – JES Solution design

Francesco Masci [email_address]

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