The IT manager here had some folks in to perform a security audit. I was a bit suspicious, since they were only scanning the internal network, and I didn't think that there was much, aside from some password scans, that could be accomplished (I'm more worried about outside attacks). One of the results of the audit was that we should create vLANs internally. We have 1 physical location, with 2 1/2 floors, and a total of about 180 workstations. We use level 2 switches. I don't know of a reason why we really should implement vLANs - anybody out there have an opinion?