Group communication supports information transfer between a set of participants. It is
becoming more and more relevant in distributed environments. For distributed or replicated …

(57) ABSTRACT A system that associates physical locations with network linked devices in a
network to which such devices are con nected. This system employs a variety oftechniques …

One or more trusted network devices within a data network infrastructure determine a
physical location of a client device requesting access to the data network infrastructure. A …

An approach to rapid failover of a communication path between computers that are linked by
redundant virtual links in a virtual private network (V PN) features detection of com …

We formulate a model of extended virtual synchrony that defines a group communication
transport service for multicast and broadcast communication in a distributed system. The …

(51) Int. Cl A hod p dabl di d sy f H04L 9M32(2006.01) acquiring address block information
for an attached function H04L 9/00(2006.01) that initiates network access on a distributed …

This paper presents the Reliable Multicast Protocol (RMP). RMP provides a totally ordered,
reliable, atomic multicast service on top of an unreliable multicast datagram service such as …

G06F 7/04(2006.01) H04/24/00(2009.01) H04L 29/08(2006.01) GOIS 5/02(2010.01) H04L
29/06(2006.01) H04L 2/24(2006.01) H0474/00(2009.01) H0474/02(2009.01) …

The method can include receiving, at the first device, the (60) Provisional application No.
60/361,419, filed on Mar. physical location transmitted from the neighboring network 1 …

Leslie Lamport once jokingly de ned a distributed system as\one that stops you from getting
any work done when a machine you've never even heard of crashes" Mul89]. Today, many …