An Efficient Service Management Architecture in Virtual Active Network Using Script MIB

1. An Efficient Service Management Architecture in Virtual Active Network Using Script MIB School of Electronics and Information Kyung Hee University Kyung Deok Seo, Choong Seon Hong < jaymz@networking.khu.ac.kr, cshong@khu.ac.kr>

2. Introduction (1/2) • Several Problems of Today’s Networks • The difficulty of integrating new technologies and standards into the shared network infrastructure. • Poor performance due to redundant operations at several protocol layers. • Difficulty accommodating new services in the existing architectural model. • Active Network • Discussed by DARPA (The Defense Advanced Research Projects Agency) research community from 1994 • Store – – Forward • Provide flexibility in new protocol and service deployment Process

3. Introduction (2/2) Figure 1. Architectural framework of active node : DARPA AN WG (1999)

4. Virtual Active Network EE Virtual Active Network (1/2) • Concept of the VAN (Virtual Active Network) • VAN can be described as a graph of virtual active nodes interconnected by Virtual Links Customer 1 EE Customer 1 EE Customer 2 EE Customer 2 EE Node C Customer 3 EE Node B Management EE Management EE Customer 1 EE Customer 3 EE Customer 2 EE Management EE Physical Active Network Customer 2 EE Node E Management EE Customer 3 EE Node D Node A Management EE Figure 2. Concept of VAN Figure 3. Example of VAN

5. Virtual Active Network (2/2) • Architecture of a Active Node for VAN • A node operating system layer configures and provides access to the node’s resources • Customer can create a new service and manage a service using SPI • Provider can manage active node using LVMI Figure 4. Architecture of a active node for VAN

6. Script MIB (1/2) • Overview of the Script MIB • Developed by the IETF DISMAN (Distributed Network Management) working group and published in May 1999 as a proposed standard. • Script MIB provides the following capabilities. • Transfer of management scripts to a distributed manager. • Initiating, suspending, resuming and terminating management scripts. • Transfer of arguments for management scripts. • Monitoring and control running management scripts. • Transfer of the results produced by running management scripts.

7. Script MIB (2/2) • Structure of the Script MIB • smLangTable (& smExtsnTable) • smScriptTable (& smCodeTable) • smLaunchTable • smRunTable Figure 5. Usage of the Script MIB

8. Service Management Architecture Using Script MIB (1/2) • SPI that provided by VAN provider is very limited for managing private VAN service. • Our Constructions • VAN Manager consists of • Service Info. Table • Node Info. Table • Script Repository Table • GUI Generator • Authentication Module • ANEP Packet Generator Figure 6. VAN Manager

9. Service Management Architecture Using Script MIB (2/2) • Active network node for VAN based Service consists of • ANEP Daemon • Packet Analyzer • Script MIB Implementation • SNMP Agent • Customer’s EE • Management EE • Back UP Manager • Management Script Repository Figure 7. Active network node for VAN

10. Service Management Scenario using Proposed Architecture Provider Node B Customer 1 EE Customer 1 EE Customer 2 EE S S Customer 2 EE Customer 3 EE Management EE Node A Management EE Back Up Manager Customer 1 EE VANManager Customer 3 EE S Customer 2 EE S Management EE S 2 Customer 2 EE Node D Management EE Customer 3 EE Node C Management EE 1 3 4 Node E S Management Script Repository Customer2 S Figure 8. Service Management Scenario

11. Implementation Figure 9. Main Modules Figure 10. Testbed • Using Toolkits • Active Network Node Implementation • Using ANTS 2.0.3 (University of Utah & University of Washington) • Script MIB Implementation • Using JASMIN 1.0.0 (NEC Europe C&C Lab. & TU Braunschweig) • SNMP Agent • Using Net-SNMP 5.0.7 • Programming Language • JDK 1.1.8

12. Conclusions & Future Works • Conclusions • Active networks using the VAN concept give customers new possibilities and benefits • Service management using Script MIB is fit for service in VAN • Service management architecture in VAN using Script MIB is dynamic and flexible • Future Works • Performance evaluation • Study of VAN based service and managed objects