User Interface: Home Network Menu
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Distributing IPv4 Addresses
Overview
Every network device in the IPv4 home network of the FRITZ!Box has an address from the IPv4 address range of the FRITZ!Box. Either a network device receives its IPv4 address automatically from the DHCP server of the FRITZ!Box, or you enter the IP address manually in the network settings of the network device.
IPv4 DHCP Server
DHCP stands for Dynamic Host Configuration Protocol. A DHCP server in the IPv4 network assigns IPv4 addresses to the network devices automatically. Assigning the IP addresses via the DHCP server ensures that all of the network devices connected with the FRITZ!Box are located in the same IP network.
The DHCP server of the FRITZ!Box is enabled upon delivery.
One part of the IPv4 address range of the FRITZ!Box is reserved for the
DHCP server. The DHCP server assigns IP addresses from this range to the network devices.
IPv4 Addresses Reserved for the DHCP Server upon Delivery
192.168.178.20 - 192.168.178.200
You can change the address range for the DHCP server if needed:
Kind of Change
Enlarge
Reduce
Requirement
If there are many network devices in the network, many IP addresses will be needed. In this case the address range of the DHCP server can be enlarged. Example for a larger range:
192.168.178.20 - 192.168.178.220
If there are fewer network devices, the address range can be reduced. Example for a smaller range: 192.168.178.20 - 192.168.178.120
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FRITZ!Box 6890 LTE 152
User Interface: Home Network Menu
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Kind of Change
Move
Requirement
If you permanently assign the IPv4 addresses 192.168.178.2 - 192.168.178.49 to network devices, but want to maintain a DHCP address range of the same size, then you can shift the
DHCP address range, for instance to the range
192.168.178.50 - 192.168.178.230
Rules
• Only one DHCP server may be active in a network.
Preparing Network Devices for DHCP
For the IP address to be assigned by the DHCP server, the “Obtain an I-
P address automatically” option must be enabled in the IPv4 settings of
the network devices; see page 158 .
When a network device registers with the FRITZ!Box, it receives an
IPv4 address from the DHCP server. Every time the network device is restarted, the DHCP server assigns it an IP address again.
Always Assign the Same IPv4 Address
You can specify that the DHCP server always assign the same IPv4 address to network devices. This option can be enabled under “Home
Network / Network / Network Connections” in the detailed settings of the network devices.
Disabling the DHCP Server
You can disable the DHCP server of the FRITZ!Box.
In the following cases it is necessary to disable the DHCP server of the
FRITZ!Box:
• You use a different DHCP server in your home network.
• You would like to assign addresses to all of the network devices in the home network manually.
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FRITZ!Box 6890 LTE 153
