ZyXEL Communications P-873HNU-51B, User Manual

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Appendix B IP Addresses and Subnetting
P-873HNU(P)-51B User’s Guide
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Example: Eight Subnets
Similarly, use a 27-bit mask to create eight subnets (000, 001, 010, 011, 100, 101, 110 and 111).
The following table shows IP address last octet values for each subnet.
Table 118
Subnet 2
IP/SUBNET MASK NETWORK NUMBER
LAST OCTET BIT
VALUE
IP Address 192.168.1. 64
IP Address (Binary) 11000000.10101000.00000001. 01000000
Subnet Mask (Binary) 11111111.11111111.11111111. 11000000
Subnet Address:
192.168.1.64 Lowest Host ID: 192.168.1.65
Broadcast Address:
192.168.1.127 Highest Host ID: 192.168.1.126
Table 119
Subnet 3
IP/SUBNET MASK NETWORK NUMBER LAST OCTET BIT VALUE
IP Address 192.168.1. 128
IP Address (Binary) 11000000.10101000.00000001. 10000000
Subnet Mask (Binary) 11111111.11111111.11111111. 11000000
Subnet Address:
192.168.1.128 Lowest Host ID: 192.168.1.129
Broadcast Address:
192.168.1.191 Highest Host ID: 192.168.1.190
Table 120
Subnet 4
IP/SUBNET MASK NETWORK NUMBER LAST OCTET BIT VALUE
IP Address 192.168.1. 192
IP Address (Binary) 11000000.10101000.00000001. 11000000
Subnet Mask (Binary) 11111111.11111111.11111111. 11000000
Subnet Address:
192.168.1.192 Lowest Host ID: 192.168.1.193
Broadcast Address:
192.168.1.255 Highest Host ID: 192.168.1.254
Table 121
Eight Subnets
SUBNET
SUBNET
ADDRESS
FIRST ADDRESS
LAST
ADDRESS BROADCAST
ADDRESS
1 0 1 30 31
2 32 33 62 63
3 64 65 94 95
4 96 97 126 127
5 128 129 158 159
6 160 161 190 191
7 192 193 222 223
8 224 225 254 255