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rapid spanning tree protocol (802.1w) (RSTP)

Rapid Spanning Tree (RSTP) is a redundancy method with a low response time standardized by the IEEE working group802.1w. If, in the case of a reorganization of the network structure, one still assumes structuring times for the spanning tree protocol that are up to the multi- digit seconds range, these times are reduced to a few hundred milliseconds with RSTP, which, however, cannot be guaranteed, which would be particularly important for service level agreements( SLA). The error response time is about 500 ms, the initialization about 400 ms.

Criticisms of RSTP are the lack of error management and that this technology cannot be used in ring topologies.

RSTP is backward compatible with the spanning tree protocol and is used, among other things, for time-shifted Internet television. With RSTP, the network configuration continues to work even if the preferred connection fails, and only when a new logical tree structure has been calculated is the network switched to it. Another spanning tree protocol specified by IEEE 802.1s is the Multiple Spanning Tree Protocol( MSTP), in which larger networks are divided into many spanning tree instances.

Englisch: rapid spanning tree protocol (802.1w) - RSTP
Updated at: 07.05.2013
#Words: 178
Links: redundancy, method, response time, institute of electrical and electronics engineers (IEEE), network
Translations: DE

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