We are looking at a product called LANGuardian. It's an agentless software that will allow us to track network traffic. The way it work is with port mirroring. My "gotcha" if you will, is that I have several physical servers that I would like to mirror as well, especially our shared storage. Currently we use Dell PowerConnect switches. They only allow for up to 4 source ports. I would probably need close to 30, maybe more. Someone mentioned to me Cisco Catalyst, HP or 3Com. I am not familiar with them so I am in the dark and was hoping someone else has done something similar and can recommend a switch that will do what I need. I've also been told that VLAN mirroring should work but I'm getting different explanations on what that really is.