Archive for March, 2010

Network reliability and availability

Network reliability and availability are often confused for many people. As an accurate definition, network reliability means how reliable a network is, which can be represented as a probability that the first failure occurs at a certain moment. In general, with time going on, the probability that the first failure occurs becomes higher and the [...]

Path segment restoration (PSR)

Path segment restoration is also called sub-path restoration. It is similar to the path restoration technique, which is however more generic than the latter. Path restoration carries out restoration always at the two end nodes of a working paths, while path segment restoration can perform restoration between any node pair on a working path as [...]