Hi Jim & Tom, I have now found out about the hardware at the customer's site. They currently have 3 VLANs built with Enterasys switches, but plan to replace them with Procurves 2524. One thing I didn't get last time that you could possibly answer: what's wrong about tagging? And what's more important, do you see any issues with ISA serving 3 VLANs? Any best practise procedures I should follow? Thanks for sharing your experience :) Mark