If a customer needs to protect the ONU trunk optical path but does not need to protect the ONU branch
optical paths, which PON line protection mode should be used?
When the DHCP Option 82 function is enabled globally and in the VLAN service profile and the port/serviceport is configured to allow user-side DHCP packets to carry Option 82, what is the processing policy if a userside DHCP packet already containing Option 82 is received?