Specifications

Installation and startup procedure
RS2-4R
Release 1.0 03/04
3.4 Basic settings
49
U Network mask
Routers and gateways subdivide large networks into subnetworks. The
network mask assigns the IP addresses of the individual devices to a
particular subnetwork.
The division into subnetworks with the aid of the network mask is
performed in much the same way as the division of the network
addresses into classes A to C (net id).
In the part of the host address (host id) representing the mask, the bits
are set to one. The remaining bits of the host address in the network
mask are set to zero (see the following examples).
Example of a network mask:
255.255.192.0
Decimal notation
11111111.11111111.11000000.00000000
Binary notation
Subnetwork mask bits
Class B