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

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  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