ZyXEL Communications NBG-418N v2 User Manual page 165

Table 73 Subnet 4 (continued)
IP/ SUBNET MASK
Subnet Mask (Binary)
Subnet Address:
192.168.1.192
Broadcast Address:
192.168.1.255
Exa m ple : Eig ht Sub ne ts
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 74 Eight Subnets
SUBNET
1
2
3
4
5
6
7
8
Sub ne t Pla nning
The following table is a summary for subnet planning on a network with a 24-bit network number.
Table 75 24-bit Network Number Subnet Planning
NO . "BO RRO WED"
HO ST BIT S
1
2
3
4
5
6
7
The following table is a summary for subnet planning on a network with a 16-bit network number.
Table 76 16-bit Network Number Subnet Planning
NO . "BO RRO WED"
HO ST BIT S
1
2
Appendix B IP Addresses and Subnetting
NET WO RK NUMBER
11111111.11111111.11111111.
Lowest Host ID: 192.168.1.193
Highest Host ID: 192.168.1.254
SUBNET ADDRESS FIRST 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)
SUBNET MASK
255.255.128.0 (/17)
255.255.192.0 (/18)
NBG-418N v2 User's Guide
L AST O C T ET BIT VAL UE
11 000000
L AST ADDRESS
30
62
94
126
158
190
222
254
NO . SUBNET S
2
4
8
16
32
64
128
NO . SUBNET S
2
4
165
BRO ADC AST
ADDRESS
31
63
95
127
159
191
223
255
NO . HO ST S PER
SUBNET
126
62
30
14
6
2
1
NO . HO ST S PER
SUBNET
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