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Function Specification
101
3.6.11.
DHCP Server
[Operating interface]
LAN/wireless LAN interface
[Basic specifications]
It is based on RFC2131 and RFC2132. It does not support DHCP relay function.
Supported messages are as follows.
Packet Direction
DHCP Message
Send
OFFER, ACK
Receive
DISCOVER, REQUEST, RELEASE, DECLINE
Contents of the transmitted OFFER and ACK messages are as follows.
Field/Option
Initial Value
Supplementary
IP Address
Distribution from the assigned
address
At most 250 addresses are distributed.
Subnet Mask [1]
255.255.255.0
Setting can be changed.
Router [3]
192.168.110.1
Setting can be changed.
Domain Name Server [6]
192.168.110.1
Set the IP address of the LAN interface
when the NAPT function is enabled.
Domain Name [15]
(Blank: User setting value is
used.)
Number of input characters: 64
Input characters: Alphanumeric
characters and ! ' ( ) * - . _ ~
NetBIOS Name Server [44]
(Blank: User setting value is
used.)
IP Address Lease Time [51]
24 hours
Setting can be changed. (At most 72
hours)
If set to 0, it means “no limit“.
Before distributing the IP address to the DHCP client, ARP checks whether the address is not in use.
The specification of the DHCP DECLINE message is as follows.
When a DECLINE message is received, the corresponding IP address is not distributed for three minutes.