From the Cisco website:
"VLANs address scalability, security, and network management"
However, once you introduce inter-vlan routing, doesn't the security aspect of VLANs pretty much go out the window? In other words, using simple vlans if I have a computer in port 2/vlan 2, it's not supposed to be able to talk to a computer in port 3/vlan 3. But if I implement inter-vlan routing, then the computer on port 2 now knows how to get to the computer on port 3, thus the inherent security (such as it is) in VLANs is no longer applicable? Is this correct?
If so, I presume the answer is to start using ACLs if security is still a concern.