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shortest path bridging (SPB)

Shortest PathBridging (SPB) is a bridging technique specified by the IEEE 802.1aq working group. The SPB standard specifies the shortest bridging of unicast and multicast frames, including the calculation of multiple spanning trees and the localization of stations.

In shortest path bridging, the shortest path tree (SPT) is calculated for each node using the link state protocol (LSP). The LSP protocol is used to discover and display the shortest link structures of all bridges in the SPB area. Depending on the SPB concept, the MAC addresses of the participating stations and the information about the service affiliations of the interfaces are distributed to non-participating stations. This SPB procedure is called shortest path bridging MAC (SPBM). The topology data is used by the computation computer to determine the most cost-effective connections from each node to all other participating nodes. Another SPB technology is TRILL (Transparent Interconnection of Lots of Links).

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Englisch: shortest path bridging - SPB
Updated at: 30.12.2018
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