Comtech EF Data CDD-56X Series Vipersat - Manual (Page 98)

IP Addressing MN/22137, rev 1
A-10 Vipersat CDD-56X Series User Guide
Figure A-7 ANDing an IP address and a subnet mask
A calculator, available from SolarWinds, performs these IP and subnet mask
calculations and can be found at:
http://www.solarwinds.com/products/freetools/index.aspx
Network Segments
A “Network Segment” is a portion of a network that is bordered by two router
interfaces as shown in Figure A-8.
Figure A-8 Network Segments
Each network segment must either be on a different network or a different
subnet. For example, if you have a single IP address available, you can change
the default mask from 255.255.255.0 to 255.255.255.192. The resulting calcula-
tion yields four subnets:
• 192.168.100.0
• 192.168.100.64
• 192.168.100.128
• 192.168.100.192
ANDing Result
Subnet Mask
IP Address
11000000.10101000.00000010.00000000 192.168.2.0
11111111.11111111.11111111.00000000 255.255.255.0
11000000.10101000.00000010.01000010 192.168.2.66
Binary Values
Dotted Decimal
Address
ANDing Result
Subnet Mask
IP Address
11000000.10101000.00000010.00000000 192.168.2.0
11111111.11111111.11111111.00000000 255.255.255.0
11000000.10101000.00000010.01000010 192.168.2.66
Binary Values
Dotted Decimal
Address