ZyXEL Communications MES-2110 manual Dhcp Binding Table, 145

	Chapter 19 IP Source Guard
Table 53 Configuration > IP Source Guard > DHCP > DHCP Snooping Configuration
(continued)
LABEL	DESCRIPTION
Apply	Click Apply to save your changes to the MES-2110’s run-time
	memory. The MES-2110 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.
DHCP Snooping Status
Action	This shows whether DHCP snooping is enabled or disabled.
DHCP snooping VLAN	This shows whether the MES-2110 forwards DHCP frames of any
Mode	VLANs or specific VLANs to DHCP servers.
DHCP Snooping	This specifies whether or not the MES-2110 enabled or disabled
Option	adding DHCP relay agent option 82 information to DHCP requests
	that the MES-2110 relays to a DHCP server for each VLAN.
Option82 Information	This indicates the remote ID of the DHCP relay agent.
DHCP VLAN (Fixed)	This shows the specific VLAN ID.
Trust/Untrust	This shows whether the port is trusted or un-trusted.

19.3 DHCP Binding Table

Bindings are used by DHCP snooping and ARP inspection to distinguish between authorized and unauthorized frames in the network. The MES-2110 learns the bindings by snooping DHCP frames (dynamic bindings) and from information provided manually by administrators (static bindings).

Use this screen to manage static bindings for DHCP snooping and ARP inspection. Static bindings are uniquely identified by the MAC address and VLAN ID. Each MAC address and VLAN ID can only be in one static binding. If you try to create a static binding with the same MAC address and VLAN ID as an existing static binding, the

MES-2110 User’s Guide

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