G.Pavlou, From Protocol-based to Distributed Object Based Management Architectures, to appear in the proceedings of the IFIP/IEEE Workshop on Distributed Systems: Operations and Management, Sydney, October 1997  Home/Search   Document Details and Download   Summary   Related Articles   Check

....with a distributed infrastructure in which the access protocol is secondary, if compared with the subjacent APIs (Application Program Interfaces) CORBA foresees independence and portability of protocols due to the APIs. The access protocol may be altered without any effect on an application [12, 13]. ii) ATM is a broad band transmission technology that, with the reliability of the modern facilities, provides a rapid package commuter. ATM maintains a transfer mode oriented to packages. It permits multiple logical connections multiplexed in a single physical interface. The information which ....

PAVLOU, G. From Protocol-based to Distributed Object-based Management Architectures. DSOM 97. Sydney, Austrlia, pp. 25-40.

....references of its superior or of its immediately subordinate objects in the containment hierarchy. 3. An Initial Mapping of the OSI SM Model to CORBA Having discussed the mapping of GDMO to CORBA IDL, we will consider how CORBA can be used instead of OSI SM as the basis for TMN systems. In [Pav97a], we discussed a pure ODP approach which uses trading for managed object discovery and does not rely on hierarchical naming. Such an approach is not feasible because federated trading for non hierarchical trading spaces is an unsolved problem. Here we present a more pragmatic approach which uses ....

....is similar to that provided by OSI SM agents and the question is where it should be placed. Hier96] the official JIDM proposal, places it as part of the i ManagedObject interface. This essentially means that every managed object behaves as an agent for its subtree. In contrast, the author [Pav97a][Pav97b] and [Garc96] propose to separate this functionality from the managed objects, so that different sophisticated access styles can be provided. 4.3 Fine grain Event Dissemination and Multiple Object Access Through the Management Broker Given the support for filtering, fine grain event ....

G. Pavlou, From Protocol-based to Distributed Object-based Management Architectures, in Proc. of IFIP/IEEE Distributed Systems: Operations and Management (DSOM'97), A. Seneviratne, V. Varadarajan, P. Ray, ed., pp. 25-40, ISBN 1 86365 3449, 1997 20

....In this case, managed objects are mapped to CORBA objects, with each MO acting as an CMIS like agent for its subtree. An alternative approach would be to separate CORBA based managed objects from CMIS like access aspects, with special Management Broker (MB) objects acting as CMIS like agents [18]. In this case, CMIS behavior can be supported by special MBs that exhibit a CMIS like IDL interface. We have been experimenting with CORBA based CMIS and CMIS based management brokers in the European funded ACTS REFORM project and also intend to report our findings in the future. ....

G. Pavlou, From Protocol-based to Distributed Object based Management Architectures, Proceedings of the 8 IFIP/IEEE Workshop on Distributed Systems: Operations and Management (DSOM'97), A. Seneviratne, V. Varadarajan, P. Ray, ed., pp. 25-40, ISBN 1 86365 3449, 1997

....OSI management facilities in a CORBA environment. An ISO ITU T initiative that studies the impact of ODP on OSI management is known as the Open Distributed Management Architecture (ODMA) ODMA] This is a theoretical high level study. In addition, research work by the author, described in [Pav97], and by others has specified OSI SM facilities over CORBA. The approach is depicted in Figure 2.17. MB MO Object Cluster M O: Managing Object MO: Managed Object MB: Management Broker Figure 2.17 The OSI TMN Operational Model Over CORBA In this approach, the operational framework of OSI ....

G.Pavlou, From Protocol-based to Distributed Object-based Management Architectures, Proceedings of the IFIP/IEEE International Workshop on Distributed Systems: Operations and Management, Sydney, Australia, 1997.

.... between the NMF and X Open to define generic mappings between OMG CORBA and OSI management [19] In addition, the TMN itself may eventually migrate to the use of ODP based technologies by retaining its information aspects but using ODP based distribution and transport mechanisms as described above [18]. Whatever the communication mechanism of the future integrated control and management framework is, CMIS P and Q interfaces in the medium term or CORBA in the long term, performance is very important in order to meet the stringent real time requirements of control plane operation. In order to ....

Pavlou, G., From Protocol-based to Distributed Object-based Management Architectures, to appear in the Proceedings of the IEEE/IFIP Distributed Systems: Operations and Management (DSOM'97) Workshop, Sydney, Australia, Chapman & Hall, 1997

....advantage of this approach is that it does not require a hierarchical naming scheme based on containment. On the other hand, this approach requires federated trading of non hierarchical search spaces, which is an open research issue. A more detailed consideration of this approach can be found in [Pav97]; the approach is depicted in Figure 5. 12 MO Object Cluster M O T T Federate Import Access per MO Search Export M O: Managing Object MO: Managed Object T: Trader E E I I I: Import I F E: Export I F Figure 5 Object Discovery Through Trading A more feasible approach ....

G. Pavlou, From Protocol-based to Distributed Object-based Management Architectures, in Proc. of IFIP/IEEE Distributed Systems: Operations and Management (DSOM'97), A. Seneviratne, V. Varadarajan, P. Ray, ed., pp. 25-40, 1997

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G.Pavlou, From Protocol-based to Distributed Object Based Management Architectures, to appear in the proceedings of the IFIP/IEEE Workshop on Distributed Systems: Operations and Management, Sydney, October 1997

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