Example Eight Subnets - ZyXEL Communications ZyAIR B-4000 User Manual

ZyAIR B-4000 Hot Spot Gateway
IP Address
IP Address (Binary)
Subnet Mask (Binary)
Subnet Address: 192.168.1.128
Broadcast Address: 192.168.1.191
IP Address
IP Address (Binary)
Subnet Mask (Binary)
Subnet Address: 192.168.1.192
Broadcast Address: 192.168.1.255

Example Eight Subnets

Similarly use a 27-bit mask to create 8 subnets (001, 010, 011, 100, 101, 110).
The following table shows class C IP address last octet values for each subnet.
SUBNET SUBNET ADDRESS
1
2
3
4
5
6
7
8
G-6
Chart G-9 Subnet 3
NETWORK NUMBER
192.168.1.
11000000.10101000.00000001.
11111111.11111111.11111111.
Chart G-10 Subnet 4
NETWORK NUMBER
192.168.1.
11000000.10101000.00000001.
11111111.11111111.11111111.
Chart G-11 Eight Subnets
FIRST ADDRESS
0
32
64
96
128
160
192
224
Lowest Host ID: 192.168.1.129
Highest Host ID: 192.168.1.190
Lowest Host ID: 192.168.1.193
Highest Host ID: 192.168.1.254
LAST ADDRESS
1
33
65
97 126
129 158
161 190
193 222
223 254
LAST OCTET BIT VALUE
128
10000000
11000000
LAST OCTET BIT VALUE
192
11000000
11000000
BROADCAST ADDRESS
30
62
94
31
63
95
127
159
191
223
255
IP Subnetting