Manually reset stack master switch

[frieslandcampina]

Hi,

What will happens if someone manually reset the stack master switch? Does the slave become a master switch? What will happens to the original stake master switch after the factory reset and lost the configuration? 

[balaji.bandi]

What will happens if someone manually reset the stack master switch? Does the slave become a master switch? 

Sure if you have a slave device that can take care of the master role, if your uplink split into master and slave, the slave becomes master and start forwarding the rest of the switch in the stack.

What will happens to the original stake master switch after the factory reset and lost the configuration? 

Not sure what is the suer case, if the master switch all the config, if you to reset default, naturally all the config is gone.

In other cases, if the master switch failed, you replace it with a new switch, just make sure has the same IOS Version and basic required config as a master switch, join the new replaced switch into Stack, you have all the configuration in slave.

[Joseph W. Doherty]

If a stack master fails, a new master is elected. When the former master rejoins the stack, it will join as a slave/member switch even if configured with a higher election priority (because if doesn't participate in the last election, and there is not another election until required).

Depending on the switches being used in the stack, the prior can cause a change in the active IOS features available to be used by the stack.

Regarding losing the master configuration, a stack maintains the stack configuration on all switches, so when the master rejoins, if will reacquire its prior configuration. However, you did mention a factory reset. For those, I recall, the joining stack member may also just reacquire its prior configuration. (It depends, I recall, what stack member it joins as.) (I also recall, a member switch being added to a stack from a different, or non-reset configuration, should be configured to accept the "new" stack's configuration, and ideally, configured at the stack number that was earlier lost [to regain that member's specific configuration].)