Horus: a flexible group communication system
Communications of the ACM
Presenting XML
Application-level Programmable Internetwork Environment
BT Technology Journal
Concepts, Activities and Issues of Policy-based Communications Management
BT Technology Journal
Scalable Multimedia Communication Using IP Multicast and Lightweight Sessions
IEEE Internet Computing
Group Coordination Support for Synchronous Internet Collaboration
IEEE Internet Computing
Design and implemantation of a CORBA fault-tolerant object group service
Proceedings of the IFIP WG 6.1 International Working Conference on Distributed Applications and Interoperable Systems II
Adding Scalability to Transport Level Multicast
Proceedings of the Third International COST 237 Workshop on Multimedia Telecommunications and Applications
Component Interaction in Distributed Systems
CDS '98 Proceedings of the International Conference on Configurable Distributed Systems
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Today's distributed systems consist of many different components, making the efficient management of such systems an extremely difficult task. Group communication should provide a potential solution to make the management process more flexible. It is possible to build a group communication system based on traditional distributed technology such as CORBA (Common Object Request Broker Architecture), but efficiency is poor due to lack of support for multicast and the overhead of building groups in current commercially available products. Multicast is a key part of a future group communication architecture and although reliability is not yet supported there are workarounds which provide a solution. This paper discusses the design and implementation of reliable IP multicast protocols for group communication. One important aspect of this work is the modularisation of the protocol blocks, and the design of a modular protocol, which can be used in conjunction with other similar protocol blocks to build a communication stack for group communications, is described in detail.