I have 3x Stacked 3750 switch, Sw1 is the master. I had a problem with the service when I change the assignment of master of the stack. The problem was solved reloading the switch.
The question is why happened this?, what is the problem of change the assignment of master of the stack?, what is the right procedure to do this change?
I really appreciate your comments, i'm sorry for my bad english,
Lots of traceback so an event occurred that caused the outage. I recommend saving that traceback log and opening a TAC case for further troubleshooting.
Switch 2 would have the same config as Switch 1. They are all part of the same stack. During switchover, network services may be impacted but not for long. In you case, the stack was affected by a traceback condition.
Again, opening a TAC case to determine the root cause would be my recommendation..
STACK Troubleshooting document link provides answer to your problem as well as query what will happen if change the master switch
There is no reason for changing the stack master.
I recommend reading the documentation on several ways you could change the stack master
Most of the ways are service impacting thus not recommended during production.