MSTP/4/ROOT_LOST:This bridge is no longer the root bridge of the MSTP process [process-id] instance [instance-id].(PreRootInfo=[PreRootInfo], NewRootInfo=[NewRootInfo])
Description
The device was no longer the root bridge in the instance.
Parameters
Parameter Name
Parameter Meaning
process-id
Indicates the ID of an MSTP process.
instance-id
Indicates the ID of an instance.
PreRootInfo
Information about the old root bridge.
NewRootInfo
Information about the new root bridge.
Possible Causes
The network topology was changed.
Procedure
Run the display stp command to check whether the priority of the local device or connected device has been re-set.