I’ve configured a bridge with 3 ports ether 2,3,4 then I added vlans 10,20,30 under the bridge after that I configured IP addresses and DHCP server for each vlan. Now I need to know how to configure DHCP trusted interfaces. Should I add the vlan interfaces to the bridge to make them trusted or just make the ports ether 2,3,4 trusted as shown in the attached pic.
No…
DHCP Snooping is used basically on Access ports…
https://help.mikrotik.com/docs/display/ROS/Bridge#Bridge-DHCPSnoopingandDHCPOption82