Spanning tree protocol stp determines the least cost path from the root bridge to other nodes in the networks. Spanningtree protocols user guide juniper networks. As indicated in the manual, the spanning tree protocol is used to ensure that. The spanning tree protocol stp is a network protocol that builds a loopfree logical topology. In discussions about stp, the term root is used to describe two concepts. Presentation et configuration du protocole spanning tree stp sur. When you monitor spanningtree protocol stp operations, you may be concerned when you see topology change counters that increment in. The concept of the spanning tree protocol was devised to address broadcast storming. Le protocole stp fonctionne sur des ponts et des commutateurs compatibles 802. Stp will identify if there are any loops, and then disable or block. Understanding spanning tree protocols on a qfabric system.
Spanning tree protocol stp was developed before switches were created in order to deal with an issue that occurred with networks that were implementing network bridges. Rootthe port given this role is the selected best path to reach the root switch. First, it prevents problems caused by loops on a network. Concepts description of the technology stp operation task stepbystep instructions verify troubleshoot stp path cost automatically changes when a port speedduplex is changed troubleshoot commands command summary related information introduction spanning tree protocol stp is a layer 2 protocol that runs on bridges and switches. Spanning tree protocol stp was developed to prevent the broadcast. Even more confusing some whitepapers on ciscos website will define the. Switches running stp will build a map or topology of the entire switching network. Spanning tree protocol stp spanning tree protocol stp was developed to prevent the broadcast storms caused by switching loops. Stp feature overview and configuration guide allied telesis. Hi friends check out below link its my own video tutorial for. Spanning tree protocol timing protocol is timer driven too short timers can give loops and instabilities too long timers can give long convergence times until network reaches a stable spanning tree configuration proto id 2 root id 8 ver 1 bpdu type 1 flags 1 root path cost 4 bridge id 8 port id 2 msg age 2 max age 2 hello time 2.
Second, when redundant loops are planned on a network, stp deals with remediation of network. Furthermore, the administrator can define alternate paths within a spanning tree. Stp overview stp is a layer 2 link management protocol that prov ides path redundancy while preventing loops in the network. On each switch, display the spanning tree table with the show spanningtree command. Spanning tree protocol this document descibes spanning tree protocol stp in a wireless environment.
681 571 1427 1102 1237 521 705 146 1370 1132 1187 158 659 792 585 1245 1040 624 558 1505 1108 1220 143 195 1194 407 639 784 368 114 481 1195 771 933 522 1463