I just wonder what are the minimum config requirement for the hosting switch
Are you talking about ZeroTouch? If yes, try this.
is there a way to "open" a port with all the trunk settings for a sub-switch, and auto protect it if someone tries to plug a non cisco switch or something else
Wouldn't make a difference anyway. One of the things you need for ZeroTouch is to specify the exact model/sub-model. So, let's say you specified a 2960 but someone's plugged a 3560. Since it's not in your configuration, the switch does nothing. It gets even better, say someone plugs an HP1824, again, the switch does NOT understand non-Cisco so it does nothing.
Now you want to enable Dynamic Ports so when someone plugs a PC, an auto macro for PC is envoked? Hmmmm ... haven't tried this before. But I'm not sure if this is do-able. It'll make your switch configuration very complicated.
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