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Membership Algorithms for Multicast Communication Groups
 

Summary: Membership Algorithms for Multicast
Communication Groups
Yair Amir, Danny Dolev ? , Shlomo Kramer, Dalia Malki
The Hebrew University of Jerusalem, Israel
Abstract. We introduce a membership protocol that maintains the set
of currently connected machines in an asynchronous and dynamic envi­
ronment. The protocol handles both failures and joining of machines. It
operates within a multicast communication sub­system.
It is well known that solving the membership problem in an asynchronous
environment when faults may be present is impossible. In order to cir­
cumvent this difficulty, our approach rarely extracts from the member­
ship live (but not active) machines unjustfully. The benefit is that our
procotol always terminates within a finite time. In addition, if a machine
is inadvertently taken out of the membership, it can rejoin it right away
using the membership protocol.
Despite the asynchrony, configuration changes are logically synchronized
with all the regular messages in the system, and appear virtually syn­
chronous to the application layer.
The protocol presented here supports partitions and merges. When parti­
tions and merging occur, the protocol provides the application with exact

  

Source: Amir, Yair - Department of Computer Science, Johns Hopkins University
Dolev, Danny - School of Computer Science and Engineering, Hebrew University of Jerusalem
Hebrew University of Jerusalem - School of Computer Science and Engineering, Transis Project

 

Collections: Computer Technologies and Information Sciences; Mathematics