White Papers

N-Way Fail-Over Infrastructure for Reliable Servers and Routers

Overview Maintaining the availability of critical servers and routers is an important concern for many organizations. At the lowest level, IP addresses represent the global namespace by which services are accessible on the Internet. The paper introduces Wackamole, a completely distributed software solution based on a provably correct algorithm that negotiates the assignment of IP addresses among the currently available servers upon detection of faults. This reallocation ensures that at any given time any public IP address of the server cluster is covered exactly once, as long as at least one physical server survives the network fault. The paper presents the design considerations, algorithm specification and correctness proof, discusses the practical usage for server clusters and for routers, and evaluates the performance of the system.

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Publisher
Johns Hopkins University
File Format
PDF
Date Published
Feb 5, 2009
Format
White Papers
Topics
Application Servers, Software Engineering, Switching

Johns Hopkins University White Papers

A Scalable Peer-to-Peer System for Music Content and Information Retrieval

A Scalable Peer-to-Peer System for Music Content and Information Retrieval

Currently a large percentage of Internet traffic consists of music files, typically stored in MP3 compressed audio forma

Publisher: Johns Hopkins University  |  Tags: keywords

Impact of Precedence Enabled Per Hop Behaviors on TCP Flows

Impact of Precedence Enabled Per Hop Behaviors on TCP Flows

In the Department of Defense's (DoD) Global Information Grid (GIG) transport network, packet handling must provide prefe

Publisher: Johns Hopkins University  |  Tags: applications, dod, ip, network, qos

Petabyte Scale Data Mining: Dream or Reality?

Petabyte Scale Data Mining: Dream or Reality?

Science is becoming very data intensive. The astronomy datasets with tens of millions of galaxies already present substa

Publisher: Johns Hopkins University  |  Tags: data, data mining, database, laptop

Data Mining and Predictive Modeling in Institutional Advancement: How Ten Schools Found Success

Data Mining and Predictive Modeling in Institutional Advancement: How Ten Schools Found Success

This technical report, produced in partnership by the Council for Advancement and Support of Education (CASE) and SPSS I

Publisher: Johns Hopkins University  |  Tags: data, data mining

Towards Scalable and Robust Overlay Networks

Towards Scalable and Robust Overlay Networks

Every peer-to-peer system is based on some overlay network connecting its peers. Many of the overlay network concepts pr

Publisher: Johns Hopkins University  |  Tags: network, peer-to-peer