The dhcp snooping trusted no-user-binding command configures an interface as the trusted interface.
The undo dhcp snooping trusted no-user-binding command restores the default state of an interface.
By default, no trusted interface is configured.
When DHCP snooping is enabled on an interface, the interface is an untrusted interface by default. After you use the dhcp snooping trusted no-user-binding command in the interface view, the interface becomes a trusted interface.
This command can only be used during a configuration restoration.