Network Protection

Pre-cross-connected trails (PXT) are a type of network protection technique similar to p-cycles. Rather than setting up complete circles like p-cycles, the PXT technique establishes open pre-cross-connected trails as protection path. Then depending on the location where a failure occurs, switch-over actions are taken at the two end nodes of a protected working path. Fig. [...]

Ring cover is a type of mesh-based protection technique to apply the traditional ring protection techniques such as unidirectional path switched ring (UPSR) and bidirectional line switched ring (BLSR) to a mesh-based network. For a simple network, it may be possible to employ a single ring to cover all the links of the network. However, [...]