User`s manual

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option 82 function.
Port and IP Address (Port Based DHCP Server configuration): the Switch also
supports port-based DHCP server function. It allows user assign specified IP
address to specified port that DHCP client presented; and the DHCP server only
offer the predefined IP address to the DHCP client.
DHCP Leased Entries: the switch provides an assigned IP address list for user
check. It will show the MAC and IP address that was assigned by the switch. Click
the Reload button to refresh the listing.