Wired Intelligent Edge (Campus Switching and Routing)

How to disable Spanning-Tree on Aruba Mobility switches ?

Aruba Employee
Aruba Employee

Introduction :


The spanning tree protocol ensures that sensible redundancy in your network doesn't turn into loops. Although it is not recommended, you can turn off Spanning Tree Protocol globally on the switch on occasions like when enabling port level security functionality Loop Protect


Environment :


This article applies to Aruba Mobility Access Switches running a minimum version of ArubaOS 7.0 and Above. The configuration and verification steps mentioned in this article are tested on ArubaS2500 running ArubaOS 7.3.



Configuration Steps :

By default spanning tree is enabled with the mode set to MSTP and it runs on every port. The spanning tree feature cannot be turned off in switches on a per port basis.
(ArubaS2500-24P) #configure terminal
(ArubaS2500-24P) (config) #spanning-tree no mode


Verification :


(ArubaS2500-24P) #show spanning-tree detail
No spanning tree instance exists.
(ArubaS2500-24P) #show spanning-tree vlan all
No spanning tree instance exists.

Note: Extreme care needs to be taken whenever you disable spanning tree because this creates Layer 2 loops within the network.


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Last update:
‎07-08-2014 02:24 PM
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