a) 100M switchports are insanely cheap b) It limits the damage you can do when your box gets owned. b.1) It limits the amount of damage you can do if your bus

a) 100M switchports are insanely cheap b) It limits the damage you can do when your box gets owned. b.1) It limits the amount of damage you can do if your business/usage model assumes more traffic than their business model assumes you'll use.