Version 1.0, 12/2022. Copyright 2012 Hitron Technologies
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Version 1.0, 12/2022. Copyright 2022 Hitron Technologies
21
Hitron CODA-57/57-EU User’s Guide
The private network is your Local Area Network (LAN) and Wireless Local Area
Network (WLAN), if featured and enabled. You are free to assign IP addresses
to computers on the LAN and WLAN manually, or to allow the CODA-57/57-EU
to assign them automatically via DHCP (Dynamic Host Configuration Protocol).
IANA has reserved the following blocks of IP addresses to be used for private
networks only:
If you assign addresses manually, they must be within the CODA-57/57-EU’s
LAN subnet.
2.1.2.3 Subnets
A subnet (short for sub-network) is, as the name suggests, a separate section of a
network, distinct from the main network of which it is a part. A subnet may contain all
of the computers at one corporate local office, for example, while the main network
includes several offices.
In order to define the extent of a subnet, and to differentiate it from the main network,
a subnet mask is used. This “masks” the part of the IP address that refers to the main
network, leaving the part of the IP address that refers to the sub-network.
Each subnet mask has 32 bits (binary digits), as does each IP address:
A binary value of 1 in the subnet mask indicates that the corresponding bit in the
IP address is part of the main network.
A binary value of 0 in the subnet mask indicates that the corresponding bit in the
IP address is part of the sub-network.
For example, the following table shows the IP address of a computer (192.168.1.1)
expressed in decimal and binary (each cell in the table indicates one octet):
Table 5: Private IP Address Ranges
FROM... ...TO
10.0.0.0 10.255.255.255
172.16.0.0 172.31.255.255
192.168.0.0 192.168.255.255
Table 6: IP Address: Decimal and Binary
192 168 0 1
11000000 10101000 00000000 00000001
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