# Topology Change Notification (TCN)

**URL:** <https://forum.networklessons.com/t/topology-change-notification-tcn/9069>\
**Category:** Spanning Tree\
**Created:** [December 3, 2019, 9:25pm UTC](https://forum.networklessons.com/t/topology-change-notification-tcn/9069 "2019-12-03T21:25:50Z")\
**Posts on this page:** 1\
**Showing post:** 2

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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:** [December 4, 2019, 12:01pm UTC](https://forum.networklessons.com/t/topology-change-notification-tcn/9069/2 "2019-12-04T12:01:25Z")

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A post was merged into an existing topic: [Spanning Tree Topology Change Notification (TCN)](https://forum.networklessons.com/t/spanning-tree-topology-change-notification-tcn/1120)

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