E-Lins H820QO Series User Manual page 72

 Ignore interface: if it is unchecked, Disable DHCP on LAN.
 Start: Lowest leased address as offset from the network address.
 Limit: Maximum number of leased addresses.
 Leasetime: Expiry time of leased addresses, minimum is 2 minutes(2m). 12H means 12 hours.
 Dynamic DHCP: Dynamically allocate DHCP addresses for clients. If disabled, only clients
having static leases will be served.
 Force: Force DHCP on this network even if another server is detected.
 IPv4-Netmask: Override the netmask sent to clients. Normally it is calculated from the subnet
that is served.
 DHCP-Options: Define additional DHCP options, for example '6,192.168.2.1,192.168.2.2'
which advertises different DNS servers to clients.
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H820QO User Manual
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