spanning tree protocol


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spanning tree protocol

An algorithm that runs in network bridges and switches to prevent loops, in which packets keep going around in circles. In a small network with one or two switches, the spanning tree protocol (STP) has little value; however, in a large network where many switches are connected to each other via bridges, redundant paths can cause loops.

The algorithm creates a hierarchical "tree" that "spans" the entire network. It determines all redundant paths and makes only one of them active at any given time. In addition, if there are redundant paths and one of them fails, it allows the other to take over. The spanning tree protocol is part of the IEEE 802.1 network management standard. See IEEE 802 and BPDU.
References in periodicals archive ?
To optimize bandwidth allocation, packet delivery and fault recovery, equipment manufacturers and service providers must ensure these devices correctly implement the latest revisions of key Carrier Ethernet protocols like Link Aggregation Control Protocol (LACP) and the Spanning Tree Protocols (RSTP, MSTP).
The tests also demonstrate that EAPS surpasses the performance of the commonly deployed Spanning Tree Protocol (STP) and the Rapid Spanning Tree Protocol (RSTP) running on a switched infrastructure.
Low Cost Ring Architectures - The LE-135 enables GigE Ring Architecture with customer demarcation at 100Mbps and/or GigE over fiber and/or copper with SONET-like resiliency and stability provided by World Wide Packets' carrier Rapid Spanning Tree Protocol (RSTP) and Rapid Spanning Tree Domains (RSTPD).
The new S-Ring(TM) redundancy management software product in the GarrettCom Magnum Industrial Ethernet product line allows fast recovery in ring topologies while working in conjunction with standard Spanning Tree Protocol algorithms for fast, reliable, predictable fault recovery.
Low Cost Ring Architectures - The LE-310 enables GigE Ring Architecture with customer demarcation at 100Mbps and/or GigE over fiber and/or copper, and SONET-like resiliency and stability provided by World Wide Packets' carrier Rapid Spanning Tree Protocol (RSTP) and Rapid Spanning Tree Domains (RSTPD).