I believe I posted a question in the recent past about a problem that happened in the Network.
A Vendor connected a server blades Chassis (Which has an internal Switch) that caused I believe a change in topology or less likely a Switching loop, since our company has a Network in SiteA and another failover Network in Site B (in case of Natural Catastrophe).
**Le 's start with topology change, I believe this can happen only if the Root Bridge is not already configured in the Network, the Root is determined by the oldest Mac address, or the lowest priority or manually configured as Root primary.
I believe the only way to fix the topology Change is to go to the switch you want to be the Root and make it Primary
The only way in the scenario described above, that might have caused the Loop, could be if the Vendor has connected 2 ports from the blade chassis to 2 different ports on the same switch or on 2 ports on 2 different switches
I am not sure how you can fix a switching loop when it happens, even when STP is enabled
Any insights on this question are welcomed.