Our company is going to have to power down all the servers in our data center / computer room because of required electrical maintenance.  What steps should I take ahead of time to prepare for this, we have the below equipment Core sw, edge switches,...

I have authentication issue in my network, it contains from core sw, edge switches and cisco ISE with dynamic configuration managed by ISE host, the issue happened when we connected new cisco switch configured with vty wrong configuration, suddenly t...