ZyXEL Communications 4728F User Manual

 Chapter 26 IP Source Guard

XGS-4526/4528F/4728F User’s Guide

Use this screen to specify whether ports are trusted or untrusted ports for DHCP 
snooping. 

Note: The Switch will drop all DHCP requests if you enable DHCP snooping and there 

are no trusted ports.

You can also specify the maximum number for DHCP packets that each port 
(trusted or untrusted) can receive each second. To open this screen, click 
Advanced Application > IP Source Guard > DHCP Snooping > Configure > 
Port.

Figure 121   DHCP Snooping Port Configure