Enabling DHCP server proxy on the DHCP relay agent

The DHCP server proxy feature isolates DHCP servers from DHCP clients and protects DHCP servers against attacks.

Upon receiving a response from the server, the DHCP server proxy modifies the server's IP address as the relay interface's IP address before sending out the response. The DHCP client takes the DHCP relay agent as the DHCP server.

1. Enter system view.

   system-view

2. Enter interface view.

   interface interface-type interface-number

3. Enable DHCP relay agent and DHCP server proxy on the interface.

   dhcp select relay proxy

   By default, the interface operates in DHCP server mode after DHCP is enabled.