address or a DNS proxy server address.
Do not set the DNS IP address as the IP address of the VLAN interface of the AC, because the
AC without WAN interface settings is not a DNS proxy.
(Optional) Set the secondary DNS address assigned to users or APs by the DHCP server. You can
keep this value blank.
The start IP address of the IP address pool of the DHCP server.
The end IP address of the IP address pool of the DHCP server.
The start and end IP addresses must belong to the network segment of the IP address of the
VLAN interface.
Set the effective period of IP addresses assigned to DHCP clients (users or APs) by the DHCP
server.
When half of the lease time elapses, the DHCP client sends a DHCP request to the DHCP server to
extend the lease expiration time. If the request succeeds, the expiration time is extended. Otherwise,
the client sends the request again when 87.5% of the lease time elapses. If the second request
succeeds, the expiration time is extended. Otherwise, the client must request an IP address from the
DHCP server after the lease time expires.
When the expiration time elapses, if the client does not send a DHCP request, the DHCP server
releases the IP address.
If the function is enabled, before assigning an IP address, the DHCP server checks whether the IP
address is in use.
If no, the DHCP server assigns the IP address to a DHCP client. If yes, the DHCP server checks the
availability of other IP addresses until finding an available IP address.
Enabling this function can avoid ARP deception.
If this function is enabled, the AC only saves valid APs’ MAC addresses to its ARP table and drops
other MAC addresses. In this way, the AC avoids ARP deception and ensures proper communication
over the network.
End: After the configuration is complete, you can choose Network Setting > Network Setting >
Interface and DHCP Server to view the information. See the following figure.
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