Appendix A IP Addresses and Subnetting

XGS-4528F 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 150 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 151 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 152 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 153 Eight Subnets

SUBNET SUBNET
ADDRESS FIRST ADDRESS LAST
ADDRESS
BROADCAST
ADDRESS
1 0 1 30 31
232 33 62 63
364 65 94 95
496 97 126 127