We describe the protocol development environment for the Totem protocol, a fault-tolerant communication protocol that provides fast reliable ordered message delivery and membership services. The protocol development environment is a distributed discrete-event simulator that provides a testbed for the controlled testing and debugging of the Totem protocol. Unlike many other protocol simulation e...

We present the Totem multiple-ring protocol, a novel reliable ordered multicast protocol for multiple interconnected local-area networks. The protocol exhibits excellent performance and maintains a consistent network-wide total order of messages despite network partitioning and remerging, or processor failure and recovery with stable storage intact. The Totem protocol is designed for fault-tole...

At the LHC, diffractive physics will be explored by the dedicated experiment TOTEM whose Technical Design Report has been approved in Summer 2004. The experimental programme will be carried out partly in TOTEM standalone mode for purely forward phenomena like elastic scattering, and partly in collaboration with CMS for processes requiring a full rapidity coverage. ATLAS and ALICE are interested...

This is an overview of the two articles: “The Totem Single-Ring Ordering and Membership Protocol” by Y.Amir, L. E. Moser, P. M. Melliar-Smith, D. A. Agarwal and P. Ciarfella. “The SecureRing Protocols for Securing Group Communication” by K. Potter-Kihlstrom, L. E. Moser and P. M Melliar-Smith. The Totem protocol, which was the first to be published, describes a protocol for reliable delivery of...

In the near future more data collection devices will exist that monitor an individual's actions and interests. The data will be important for creating user models that allow applications to personalize their interactions with the user. For instance, in the field of personalized newspapers, articles will be selected based on what may be interesting or important to individual readers. Independent...