Web-based Configuration Guide 1 Network Settings
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See Section 3.6.6 Configuring an IPv6 Address for the LAN Port for more information about the DHCPv6 server
function.
3.8.2 Address Allocation Mechanism
The DHCP server allocates an IP address to a client in the following way:
(1) When the device receives an IP address request from a DHCP client, the device searches the DHCP static
address allocation list. If the MAC address of the DHCP client is in the DHCP static address allocation list, the
device allocates the corresponding IP address to the DHCP client.
(2) If the MAC address of the DHCP client is not in the DHCP static address allocation list or the IP address that
the DHCP client applies is not in the same network segment as the LAN port IP address, the device selects
an IP address not used from the address pool and allocates the address to the DHCP client.
(3) If no IP address in the address pool is allocatable, the client will fail to obtain an IP address.
3.8.3 Configuring the DHCP Server
1. Configuring Basic Parameters
Choose Local Device > Basics > LAN > LAN Settings.
DHCP Server: The DHCP server function is enabled by default in the router mode. You are advised to enable the
function if the device is used as the sole router in the network. When multiple routers are connected to the upper-
layer device through LAN ports, disable this function.
Caution
If the DHCP server function is disabled on all devices in the network, clients cannot automatically obtain IP
addresses. You need to enable the DHCP server function on one device or manually configure a static IP
address for each client for Internet access.
Start: Enter the start IP address of the DHCP address pool. A client obtains an IP address from the address pool.
If all the addresses in the address pool are used up, no IP address can be obtained from the address pool.
IP Count: Enter the number of IP addresses in the address pool.
Lease Time(Min): Enter the address lease term. When a client is connected, the leased IP address is
automatically renewed. If a leased IP address is not renewed due to client disconnection or network instability,
the IP address will be reclaimed after the lease term expires. After the client connection is restored, the client can
request an IP address again. The default lease term is 30 minutes.
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