What model switches are you using? The reason I ask is because normally Gi0/[1-48] would be the copper ports used for access, while Gi1/[1-4] would be the SFP ports used for uplink ports on something like a Catalyst 3650.  Is it possible that you're ...

DHCP snooping needs to trust ports that will receive ingress DHCP server traffic, otherwise snooping will drop those packets, and the binding will never be learned. Any port that will carry traffic from a valid DHCP server (the trunk port used for yo...