Searching for Cisco Spanning Tree Support information? Find all needed info by using official links provided below.
https://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/5234-5.html
Aug 17, 2006 · Although this document uses Cisco Catalyst 5500/5000 Switches, the spanning tree principles that the document presents are applicable to almost all devices that support STP. For the examples, this document used: A console cable that is suitable for the Supervisor Engine in the switch Six Catalyst 5509 Switches
https://www.cisco.com/c/en/us/tech/lan-switching/spanning-tree-protocol/index.html
Spanning-Tree Protocol implements the 802.1D IEEE algorithm by exchanging BPDU messages with other switches to detect loops, and then removes the loop by shutting down selected bridge interfaces. This algorithm guarantees that there is one and only one active path between two network devices.
https://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/10556-16.html
Dec 05, 2017 · Most customers that call Cisco Technical Support for spanning tree problems suspect a bug, but a bug is seldom the cause. Even if the software is the problem, a bridging loop in an STP environment still comes from a port that should block, but instead forwards traffic.
https://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/10596-84.html
Jan 22, 2007 · Cisco IOS. spanning-tree guard loop Router(config)#interface gigabitEthernet 1/1 Router(config-if)#spanning-tree guard loop; With version 7.1(1) of the Catalyst software (CatOS), loop guard can be enabled globally on all ports. Effectively, loop guard is enabled on all point-to-point links.
https://community.cisco.com/t5/switching/is-quot-spanning-tree-vlan-priority-0-quot-valid/td-p/2041214
Oct 23, 2012 · Solved: 3560 command reference says valid priority values are 4096, 8192, ... however I tried "spanning-tree vlan priority 0" and the command was accepted. When I "show spanning-tree brief", the vlan I configured did show
https://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/28943-170.html
Sep 01, 2005 · Introduction This document provides guidelines to use Cisco IOS® software to troubleshoot issues with Spanning-Tree Protocol (STP). There are specific commands which apply to the Catalyst 6500/6000 only; however, you can apply most of the principles to any Cisco Catalyst switch that runs Cisco IOS software.
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