How to disable Spanning-Tree Globally

The Spanning Tree Protocol is a network protocol that builds a loop-free logical topology for Ethernet networks. The basic function of STP is to prevent bridge loops and the broadcast radiation that results from them. Please see the following related guides: DHCP Automatic IP Assignment: How does Dynamic Host Configuration Protocol work, how to fix Error: The term Update Global Address List is not a recognized, learn the Basic Cisco ASA troubleshooting Commands, and how to delete an Instance (AssignedAccess) when applied via MDM WMI bridge Provider. In this article, you will learn how to disable Spanning-Tree Globally.

Note: It is not recommended to turn STP off. There is no global command to disable the spanning tree globally. But, you can disable all configured VLAN by “no spanning-tree vlan 1(that is on an individual vlan basis) or (have this done in range as shown below. vlan 1 – vlan50). Please see Active Directory Forest – Trees and Domain and Sites.

switch7(config)#no spanning-tree vlan 11-15

Verify that the Spanning Tree is disabled

Now run the commands below to ensure the spanning tree is disabled for the VLANs.

switch7#sh span
No spanning tree instance exists.

or use the full command as shown below

switch7#sh spanning-tree
No spanning tree instance exists.

Note: Only turn off spanning-Tree for the configured vlans on the switch. Please see how to setup RAID 5 and 10 using MegaRAID Storage Manager, and learn more about Cisco ASA -Commands.

I hope you found this blog post helpful on how to disable Spanning-Tree Globally. If you have any questions, please let me know in the comment section.

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