Event logs reporting frequent RSTP events

[bit_transporter]

Hi all,

We have been noticing numerous RSTP role/status change events in the logs for several of our MS250s. Below is an example of one that occurred within a two-minute window. These event logs come in off-and-on all day on multiple switches.

Odd thing is that no one seems to be reporting any issues, and we noticed this several weeks ago.

So I am wondering are these some type of errant log events or a bug? Perhaps I may not understand what they mean fully, but it shows ports are being disabled many times a day.

I inquired with support about this, and they suggested enabling BPDUguard on the ports, which we did, but it made no difference. If anyone has experienced something similar or if you know what may be occurring here, please let me know. TYVM. 

Edit: We are running firmware 15.21.1

[alemabrahao]

If it is a client port, I understand that it is normal if the client keeps disconnecting and connecting to the port.

Can you confirm that it's a user's port? You can review the cables as well.

[bit_transporter]

Thank you. Yes, these are being seen on client ports.

[PhilipDAth · Accepted solution]

This is normal and should be expected with user ports.

[bit_transporter]

Thanks, appreciate the confirmation

[ksumann]

Any explanation why its normal? Its kinda flooding the logs if it happens multiple times a second.

[DarrenOC]

Agree with the above in that this is normal behaviour.  Annoying in that it fills the logs though 

[bit_transporter]

Indeed. Makes it more difficult to see real events. Thanks.