3.4.8 DHCP Snooping

DHCP Snooping

Configure DHCP Snooping function, which is disabled by default.
When DHCP Snooping is enabled, you can choose to trust ports or not. As shown in the following figure, the device sets the selected ports as trusted ports, and if it is not selected, all ports are untrusted ports; Click《Apply》to set the selected port as a trusted port and complete the configuration of DHCP snooping.

Tips:

1. Enable DHCP snooping to filter DHCP messages. For the request message from DHCP client, only forward it to the trust port; for the response message from DHCP server, only forward the response message from the trust port.

2. Generally, the DHCP server port (upper connection port) is set as the trust port.