# Debug spanning-tree events

**URL:** https://forum.networklessons.com/t/debug-spanning-tree-events/8827
**Category:** Spanning Tree
**Created:** [November 11, 2019, 5:56pm UTC](https://forum.networklessons.com/t/debug-spanning-tree-events/8827 "2019-11-11T17:56:36Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![neuralping](https://cdn-forum.networklessons.com/letter_avatar_proxy/v4/letter/n/71c47a/32.png) [@neuralping](https://forum.networklessons.com/u/neuralping)
#### Post date: [November 11, 2019, 5:56pm UTC](https://forum.networklessons.com/t/debug-spanning-tree-events/8827/1 "2019-11-11T17:56:36Z")

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I don’t get any immediate screen output from the debug spanning-tree events commands showing changes when I plug a host into the switch. Disabled spanning globally - no spanning tree default. I do see the number of topology changes when I do sh spanning-tree detail. Switch model is WS-C3560-48TS. Not sure what I am missing.

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### Author: ![lagapidis](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/lagapidis/32/4949_2.png) [@lagapidis](https://forum.networklessons.com/u/lagapidis)
#### Post date: [November 12, 2019, 8:16am UTC](https://forum.networklessons.com/t/debug-spanning-tree-events/8827/2 "2019-11-12T08:16:40Z")

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A post was merged into an existing topic: [Introduction to Spanning-Tree](https://forum.networklessons.com/t/introduction-to-spanning-tree/853)

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### Author: ![lagapidis](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/lagapidis/32/4949_2.png) [@lagapidis](https://forum.networklessons.com/u/lagapidis)
#### Post date: [November 12, 2019, 8:16am UTC](https://forum.networklessons.com/t/debug-spanning-tree-events/8827/3 "2019-11-12T08:16:40Z")

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