Hello !
I have a problem of my network, when i change PVST to PVRST, the addresses of the switches are removed after 3sc. I learned that when RSTP detects au topolgy change, It flushes the MAC addresses associated with all these ports.
Ok but i don't understand the problem on my network, why he detects a topology change ? It's a problem or it's normal ?
![test rstp.PNG test rstp.PNG](/t5/image/serverpage/image-id/24109i2A58377DA95B9C6A/image-size/large?v=v2&px=999)
When i do this command "show spanning-tree detail" on the Switch2 and Switch 5 i have this:
![broken.PNG broken.PNG](https://community.cisco.com/t5/image/serverpage/image-id/24115iBF04D9AEB96384EA/image-size/large?v=v2&px=999)
And this command on the Switch 4 and 3:
![detail 1.PNG detail 1.PNG](https://community.cisco.com/t5/image/serverpage/image-id/24116i250723464279F438/image-size/large?v=v2&px=999)
![detail 2.PNG detail 2.PNG](https://community.cisco.com/t5/image/serverpage/image-id/24117i1EF9214D9B29C643/image-size/large?v=v2&px=999)
Sorry if my english is a bit broken,
Thanks for your help