ZyXEL Communications Plumbing Product metrogigabit switch User Manual

Chapter 26 IP Source Guard

MGS3700-12C User’s Guide

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

Note: If DHCP is enabled and there are no trusted ports, DHCP requests will not 

succeed.

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 134   DHCP Snooping Port Configure

Apply

Click Apply to save your changes to the Switch’s run-time 
memory. The Switch loses these changes if it is turned off or loses 
power, so use the Save link on the top navigation panel to save 
your changes to the non-volatile memory when you are done 
configuring.

Cancel

Click this to reset the values in this screen to their last-saved 
values.

Table 84   DHCP Snooping Configure (continued)