The commands “show spanning-tree” and “show spanning-tree summary” give good data. However, the “show spanning-tree root” command clearlyy illustrates if you have an issue.

The Spanning Tree Protocol, sometimes just referred to as Spanning Tree, is the Waze or MapQuest of modern Ethernet networks, directing traffic along the most efficient route based on real-time ...

On a small network (<250 users) I had a user buy a 5-port Linksys switch and uplink (via 2 cables) to Ethernet ports on the wall. This caused an infinite loop that caused some problems for the ...

What does spanning tree protocol actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

That dumb switch should never be able to bring up the second link. The managed switch would see it as a loop in spanning tree before it enables traffic on the second port.