Dhcp Snooping; Chapter 26 Dhcp Snooping; Dhcp Snooping Overview; What You Can Do - ZyXEL Communications XMG1930 Series User Manual

26.1 DHCP Snooping Overview

With DHCP snooping, the Switch can block a DHCP server on a snooped VLAN that comes from an
untrusted port in your network.

26.1.1 What You Can Do

• Use the DHCP Snooping screen
snooping database.
• Use this DHCP Snooping Configure screen
the Switch (not on specific VLAN), specify the VLAN where the default DHCP server is located, and
configure the DHCP snooping database.
• Use the DHCP Snooping Port Configure screen
are trusted or untrusted ports for DHCP snooping.
• Use the DHCP Snooping VLAN Configure screen
snooping on each VLAN and to specify whether or not the Switch adds DHCP relay agent option 82
information to DHCP requests that the Switch relays to a DHCP server for each VLAN.
• Use the DHCP Snooping VLAN Port Configure screen
DHCP option 82 profile to certain ports in a VLAN.

26.2 DHCP Snooping

Use this screen to look at various statistics about the DHCP snooping database.
To open this screen, click Advanced Application > DHCP Snooping.

Chapter 26 DHCP Snooping

C

DHCP Snooping

(Section 26.2 on page
(Section 26.3 on page
(Section 26.3.1 on page
(Section 26.3.2 on page
(Section 26.3.3 on page
XMG1930 Series User's Guide
221
H A P T E R
221) to look at various statistics about the DHCP
224) to enable DHCP snooping on
226) to specify whether ports
227) to enable DHCP
228) to apply a different
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