Panasonic DX-600 Service Manual page 243

7.3.2. Subnet Mask
A subnet mask defines how sub-segments of a network are treated.
IP
192.168.32.1
Subnet Mask
255.255.255.0
Network
Address
192.168.32.0
Global IP
Address
190.0.0.0
255.255.0.0
Note
Upper: IP address
Lower: Subnet mask
For network management purposes, special IP addresses are assigned.
1. Host address is set to all "0"
2. Host address is set to all "1"
Reserved for IP broadcasting to all subnet stations.
3. All 4 octets are set to all "1"
IP broadcast of 255.255.255.255 can be passed over the router when the network address is specified.
Normally, this is used for DHCP (Dynamic Host Configuration Protocol) network.
4. All 4 octets are set to all "0"
Reserved for default route for non-destination address
5. Most significant bit starting with "127"
Reserved for loop back address
Edition 1.0
1 1 0 0 0 0 0 0 1 0 1 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1
192
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0
255
IP
Subnet Mask
1 1 0 0 0 0 0 0 1 0 1 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0
Network Address Configuration
190.0.3.1
255.255.255.0
Router
190.0.2.1
255.255.255.0
190.0.1.1
255.255.255.0
168 32
255
255
190.0.3.2
255.255.255.0
190.0.2.2
255.255.255.0
190.0.1.2
255.255.255.0
Class B Subnet Outline
243
1
0
Third
Floor
190.0.3.3
255.255.255.0
Second
Floor
190.0.2.3
255.255.255.0
Ground
Floor
190.0.1.3
255.255.255.0
DX-600/800
APR 2002