What Is DHCP?
FRITZ!Box Fon WLAN 7170 – 8 Network Settings 69
What Is DHCP?
DHCP is the abbreviation for Dynamic Host Configuration
Protocol.
DHCP is a protocol for the dynamic negotiation of the operat-
ing parameters for the TCP/IP protocol (TCP is a transport
protocol based on the Internet protocol). The computers of a
local IP network (DHCP clients) access the DHCP server as
part of their operating systems’ start procedure.
The DHCP server assigns each client an IP address that is has
not yet been assigned at the present time. The DHCP server
also informs the client of the IP addresses of the DNS server
to be used and of the default gateway. In assigning the IP ad-
dresses the DHCP server selects from a prescribed pool of IP
addresses.
The central administration of the TCP/IP operation parame-
ters makes it possible to avoid address conflicts due to IP
addresses accidentally assigned more than once.
Example 2
IP address: 192.168.178.247
Subnet mask: 255.255.0.0
The assignment of the first three groups of numerals in the subnet
mask indicates that the first three groups of numerals in the IP ad-
dress define the network. The following addresses result:
Network address (subnet): 192.168.0.0
Address of the computer
in the subnet:
192.168.178.247
IP address pool in the sub-
net:
192.168.0.0 - 192.168.255.247
The IP addresses 192.168.0.0 and
192.168.255.255 are reserved. This
means that the addresses from
192.168.0.1 to 192.168.255.254 are
available for assignment to the com-
puters.
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