Appendix B IP Addresses and Subnetting

Table 80 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:

Lowest Host ID: 192.168.1.65

 

192.168.1.64

 

 

 

 

 

Broadcast Address:

Highest Host ID: 192.168.1.126

 

192.168.1.127

 

 

 

 

 

Table 81 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:

Lowest Host ID: 192.168.1.129

 

192.168.1.128

 

 

 

 

 

Broadcast Address:

Highest Host ID: 192.168.1.190

 

192.168.1.191

 

 

 

 

 

Table 82 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:

Lowest Host ID: 192.168.1.193

 

192.168.1.192

 

 

 

 

 

Broadcast Address:

Highest Host ID: 192.168.1.254

 

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 83

Eight Subnets

 

 

 

SUBNET

 

SUBNET

FIRST ADDRESS

LAST

BROADCAST

 

ADDRESS

ADDRESS

ADDRESS

 

 

 

1

 

0

1

30

31

 

 

 

 

 

 

2

 

32

33

62

63

 

 

 

 

 

 

3

 

64

65

94

95

 

 

 

 

 

 

4

 

96

97

126

127

 

 

 

 

 

 

158

 

ES-1552 User’s Guide