My mentor when I was studying for my CCIE told me the horror stories of someone taking down the network by plugging in an old lab switch with a higher VLAN rev. I would even go in and delete the vlan.dat before putting a switch into the boneyard. That paranoia translated into me eventually going away from route/switch and into security space :)
Gregory's Server
@hacks4pancakes
My mentor when I was studying for my CCIE told me the horror stories of someone taking down the network by plugging in an old lab switch with a higher VLAN rev. I would even go in and delete the vlan.dat before putting a switch into the boneyard. That paranoia translated into me eventually going away from route/switch and into security space :)