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GS728TS, GS728TPS, GS752TS, and GS752TPS Gigabit Smart Switches 
To configure static DHCP bindings in the database:
1.  Select the interface to add a static binding to into the DHCP snooping database.
2.  S
pecify the MAC address for the binding to be added. This is the key to the binding 
database.
3.  In the VLAN ID field, select the from the VLANs that exist on the switch for the binding rule. 
The range of the VLAN ID is (1 to 4093).
4.  In the IP Address field, specify a valid IP Address for the binding rule.
5.  Click Add to add the DHCP snooping binding entry into the database.
6.  Click Delete to delete the selected static entries from the database.
7.  Click Clear to delete all DHCP Snooping binding entries.
8.  Click Refresh to refresh the data on the screen with the latest DHCP Snooping Dynamic 
Binding information.
9.  Click Cancel to cancel the configuration on the screen and reset the data on the screen to 
the latest value of the switch.
For DHCP Snooping Dynamic Binding Configuration table shows the bindings that have been 
learned on the switch through DHCP snooping. The following table describes the available 
fields.
Field Description
Interface Displays the interface on which the binding was learned.
MAC Address Displays the MAC address for the binding in the binding database.
VLAN ID Displays the VLAN for the binding entry in the binding database. The range of the 
VLAN ID is 1 to 4093.
IP Address Displays the IP Address for the binding entry in the binding database.
Lease Time Displays the remaining Lease time for the Dynamic entries.