Hello again!
I couldn't make DHCP snooping work on trunk ports. I've got a single EX2200 in my lab, and the problems are:
1. DHCP server connected to a trunk port is always trusted.
2. DHCP client connected to a trunk port isn't seen in DHCP snooping database.
The links you provided don't discuss trunk ports. Please, can you give me any working examples?
TIA.