I have a Cisco 9300 with a Cisco IP Phone 7841 connected to it, when I perform a shut/no shut i've noticed the line protocol 5 and link state 3 will flap up/down and after 4 times.   Is there a reason why cisco phones do this? or a method to find out...

I have a 9300 switch running Version 17.09.03, I have a Cisco IP Phone 7821 connected to a switch and a computer connected to the phone. I'm running IBNS 2.0 with dot1x and mab running at the same time. I'm encountering a weird issue because when I p...