FRITZ!Box 4020
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Network Settings in the FRITZ!Box
For instructions about how to handle the emergency IPv4 ad-
dress, see the section
Opening the User Interface Using an
.
DHCP Server for IPv4
The FRITZ!Box has a DHCP server for the IPv4 range. The DHCP
server is enabled by default in the factory settings. The fol-
lowing range of IP addresses is reserved for the DHCP server
in the factory settings:
How the DHCP Server Works
Every time a network device connected with the FRITZ!Box is
started, the DHCP server assigns it an IPv4 address from the
IP address range of the DHCP server.
Only one DHCP server may be active within any network.
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 IPv4 settings of the network devices must have the “Ob-
tain an IP address automatically” option enabled. This is the
only way to receive the IP address from the DHCP server. For
more information, see the chapter
.
Fixed IPv4 Addresses When the DHCP Server Is Enabled
If you would like to configure fixed IPv4 addresses on individ-
ual computers connected with the FRITZ!Box even though DH-
CP server is enabled, please note the following:
•
The IPv4 addresses must be from the IPv4 network of the
FRITZ!Box.
•
The IPv4 addresses may not come from the address
range of the DHCP server.
•
Each IPv4 address can be assigned only once.
IP address range reserved upon
delivery
192.168.178.20—
192.168.178.200