Description


Default operational state of Spanning Tree Protocol applied when a switch is onboarded to the Juniper Mist cloud platform.


Symptoms

 

-Network administrators may notice STP is unexpectedly active on a newly MIST deployed EX Series switch without manual intervention.

 

Solution

 

STP is not enabled on EX Series switches by default. However, if the switch is managed by Mist, this protocol is enabled on the switch automatically.

 

If users do not want STP on a port, they can set the port as a Rapid Spanning Tree Protocol (RSTP) edge port by using a port profile.

 

This setting ensures that the port is treated as an edge port and guards against the reception of Bridge Protocol Data Units (BPDUs).

Modification History

2026-10-19 : Article Created