Dhcp Server - Teltonika RUT230 User Manual

4. Use WAN port as LAN

7.3.2 DHCP Server

The DHCP server is the router's side service that can automatically configure the TCP/IP settings of any device that
requests such a service. If you connect a device that has been configured to obtain IP address automatically the DHCP
server will lease an IP address and the device will be able to fully communicate with the router.
7.3.2.1 General Setup
Field Name Sample value
1. DHCP Enable / Disable/
DHCP Relay
2. Start 100
3. Limit 150
4. Lease time 12
7.3.2.2 Advanced settings
You can also define some advanced options that specify how the DHCP server will operate on your LAN network.
Enable/Disable When enabled it allows you to use the WAN port as a LAN port.
Explanation
Manage DHCP server
The starting address of the range that the DHCP server can use to give out to
devices. E.g.: if your LAN IP is 192.168.2.1 and your subnet mask is 255.255.255.0
that means that in your network a valid IP address has to be in the range of
[192.168.2.1 – 192.168.2.254](192.168.2.0 and 192.168.2.255 are special
unavailable addresses). If the Start value is set to 100 then the DHCP server will
only be able to lease out addresses starting from 192.168.2.100
How many addresses the DHCP server gets to lease out. Continuing on the above
example: if the start address is 192.168.2.100 then the end address will be
192.168.2.254 (100 + 155 – 1 = 254).
How long a leased IP will be considered valid. An IP address after the specified
amount of time will expire and the device that leased it out will have to request a
new one. Select Hours or Minutes (minimum 2min).
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