Hi, on the OFG Book CCNA 200-301, Wendell Odom is saying that "Cisco IOS switches today typically default to using RSTP rather than STP".But when i check a fresh boot of a Cisco IOS image from CML, in the running-config there is PVST mode and not RPV...

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 do...