Network Embedded Management

1. CS 268 Clemm & Wolter Ch. 3a Eve Zheng September 30, 2013 Network Embedded Management

2. Ch.3 Network Embedded Management • Management as part of total cost • Techniques • Embedded management • Software-defined networking • E.g., Open-Flow Clemm & Wolter Chapter 3 Network Embedded Management

3. Table of Contents • 3.1 Embedded Management Drivers • 3.1.1 Total Cost of Ownership (TCO) • 3.1.2 Reduction in Required Expertise • 3.1.3 Greater Network Resilience • 3.1.4 Reduced Dependency on External System Support • 3.2 Migrating Management Functionality into the Network • 3.2.1 Autonomic Systems • 3.2.2 Autonomic System Limitations Clemm & Wolter Chapter 3 Network Embedded Management

4. 3.1 Embedded Management Drivers • Many reasons • All goes to reducing cost • Improve manageability • Ease of use • Fewer operational errors • Less dependency on external systems Clemm & Wolter Chapter 3 Network Embedded Management

5. 3.1.1 Total Cost of Ownership (TCO) • Includes: • Capital expenditures, CAPEX • Operational expenses, OPEX • Reduce TCO by: • Eliminates low-level tasks, introduces higher-level, “second-order” tasks • DHCP system • Using internal management functions that supports external managers Clemm & Wolter Chapter 3 Network Embedded Management

6. 3.1.2 Reduction in Required Expertise • Experts are hard to come by • Reduce operational difficulties • Especially for new features • Increase manageability and ease of use Clemm & Wolter Chapter 3 Network Embedded Management

7. 3.1.3 Greater Network Resilience • Reduce potential operational errors • Example Methods • Automate procedures • Check for configuration consistencies with neighboring devices • Automatically discover neighbor topologies and servers • Alarms that provides accurate information about root causes Clemm & Wolter Chapter 3 Network Embedded Management

8. 3.1.4 Reduced Dependency on External System Support • Some functions do not have to be provided from elsewhere • Reduce second-order complexity Clemm & Wolter Chapter 3 Network Embedded Management

9. 3.2 Migrating Management Functionality into the Network • Traditional management paradigms • Using CLI (Command Line Interface) on device terminals to collect data • Decisions are made by external systems or human operators • Operations support systems (OSS) • Control loops performed outside managed devices Clemm & Wolter Chapter 3 Network Embedded Management

10. 3.2.1 Autonomic Systems • Theory popularized by IBM around 2000 • Notation • Autonomous system • Act entirely independently • Autonomic system • Act and react by itself in routine situations • Allow outside intervention • Self- • Functionality that enabled by autonomic system Clemm & Wolter Chapter 3 Network Embedded Management

11. 3.2.1 Autonomic Systems (cont.) • Close management control loop within the system • Self-CHOP • Self-configuring • self-healing • self-optimizing • self-protecting Clemm & Wolter Chapter 3 Network Embedded Management

12. 3.2.1 Autonomic Systems (cont.) Clemm & Wolter Chapter 3 Network Embedded Management

13. 3.2.2 Autonomic System Limitations • Management should never be eliminated • Network operators need to: • Convey their intent • Track network state and performance • Account for network usage and charge users • Ideally, manage network as one entity Clemm & Wolter Chapter 3 Network Embedded Management

14. Thank You! • Questions? • Coming soon … • 3.3 Network-Embedded Management Implementation • 3.4 The evolution of Network-Embedded Management Clemm & Wolter Chapter 3 Network Embedded Management