Network Protection

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, [...]

BLSR stands for bi-directional line switched ring. Similar to UPSR, this is also a type of ring technique that was original developed for SDH/SONET networks. This technique is also extended to optical transport networks such as WDM rings as well as Carrier Ethernet networks. BLSR itself can be further divided into two sub-types. One is [...]