Table 123 Eight Subnets - ZyXEL Communications MAX-306M1 User Manual

Appendix D IP Addresses and Subnetting
Table 122 Subnet 4 (continued)
IP/SUBNET MASK
Subnet Address:
192.168.1.192
Broadcast Address:
192.168.1.255
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 123 Eight Subnets

SUBNET
1
2
3
4
5
6
7
8
Subnet Planning
The following table is a summary for subnet planning on a network with a 24-bit
network number.
Table 124 24-bit Network Number Subnet Planning
NO. "BORROWED"
HOST BITS
1
2
3
4
5
6
7
316
NETWORK NUMBER
Lowest Host ID: 192.168.1.193
Highest Host ID: 192.168.1.254
SUBNET
FIRST ADDRESS
ADDRESS
0 1
32 33
64 65
96 97
128 129
160 161
192 193
224 225
SUBNET MASK
255.255.255.128 (/25)
255.255.255.192 (/26)
255.255.255.224 (/27)
255.255.255.240 (/28)
255.255.255.248 (/29)
255.255.255.252 (/30)
255.255.255.254 (/31)
LAST OCTET BIT
VALUE
LAST BROADCAST
ADDRESS ADDRESS
30 31
62 63
94 95
126 127
158 159
190 191
222 223
254 255
NO. HOSTS PER
NO. SUBNETS
SUBNET
2 126
4 62
8 30
16 14
32 6
64 2
128 1
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