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RSTP - Mesh Topology


Topology MESH is used especially in larger systems. The pre-requisite of its proper functioning is mainly protection from the creation of loops which is mostly taken care of by RSTP or MSTP protocols. The advantage of its use basically as in any topology is traded off by the non-guaranteed network reconfiguration time in the case of a failure. It can, depending on the size of the network and the location of the failure and reception of the periodically sent BPDU frames (by default every 2 s), range from ms up to seconds. The 3rd generation of LAN-RING switches support general RSTP protocol. During development, we removed some imperfections resulting in a slower reconfiguration time of the network. Therefore, we call the resulting protocol RSTP-M. It is backward compatible with the standardized RSTP protocol.