Fault Tolerance Virtual Router for Linux Virtual Server

A growing variety of edge network access devices appear on the marketplace that perform various functions which are meant to complement generic routerspsila capabilities, such as firewalling, intrusion detection, virus scanning, network address translation, traffic shaping, route optimization. Because these edge network access devices are deployed on the critical path between a user site and its Internet service provider. Nowadays the availability of network services is very important for many businesses and it is extremely important that overload or failure of one network can not prevent the normal usage of all other services. This paper focuses on analysis of various protocols and an implementation of RGP (redundant gateway protocol), that can treat the above problem. It runs in user-space for Linux operating system.