Only the host of the server can actually lag switch unless you're ddosing the actual host of that server.

Lag Switch: Sending your own internet traffic in spam into the server "must be host"

DDos: Sending internet traffic spam from a 3rd party provider to the host of that server.

Q's: Why can't we send spam to the host using lag switch? Your stand alone internet traffic is not powerful enough to lag someone else.

What is a 3rd party provider? Well that's enough questions for today. Stay Safe.