AVM FRITZ!Box Fon WLAN User Manual

Subnetwork
68 FRITZ!Box Fon WLAN 7170 – 8 Network Settings
called dynamic because every participant receives a new
public address that has not been assigned yet each time he
or she dials in to the Internet.
By contrast, dynamic addresses are usually used in local IP
networks because they are easy to handle, and because us-
ing them avoids incorrect IP address entries or unintentional
double assignments. The DHCP service is responsible for as-
signing unique dynamic IP addresses.
Subnetwork
A local IP network can consist of one subnetwork or be divid-
ed into multiple subnetworks. The division into subnetworks
is performed when the local IP network is configured. The
subnetworks of a local IP network are also IP networks.
Subnet Mask
The subnet mask indicates which part of an IP address is the
network address and which the address of the computer. The
network address defines what is called the subnet.
Example 1
IP address: 192.168.178.247
Subnet mask: 255.255.255.0
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 of the
subnet:
192.168.178.0
Address of the computer
in the subnet:
192.168.178.247
IP address pool in the sub-
net:
192.168.178.0 - 192.168.178.255
The IP addresses 192.168.178.0 and
192.168.178.255 are reserved. This
means that the addresses from
192.168.178.1 to 192.168.178.254 are
available for assignment to the com-
puters.

AVM FRITZ!Box Fon WLAN Specifications

General

Brand	AVM
Model	FRITZ!Box Fon WLAN
Category	Wireless Router
Language	English