Once you've reconnected via the new address, update the default gateway and try to reconnect remotely (i.e. note: You will lose connectivity once you press enter on the "IP address" command, but all configured well, you will be able to connect to your neighbor device then hop over to the new address on the target switch. The trick is to set the "reload in 5" (or whatever your desired time period to make the changes below) first. You will need to ensure that there is a neighbouring switch or router in the new subnet. The best way is to make use of the topology around you. The question then becomes, how to change the IP and gateway on the fly? This is very important for remote configuration. The reason for that is that if anything goes wrong I want the switch to reboot and restore the old configuration that worked. I use the "reload in x" command as a fail safe rather than a way to implement my changes.
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