Appendix F IP subnetting
237
BCM50a Integrated Router Configuration — Advanced
Example: eight subnets
Similarly, use a 27-bit mask to create 8 subnets (001, 010, 011, 100, 101, 110).
Table 53
shows class C IP address last-octet values for each subnet.
Table 51
Subnet 3
Network number
Last Octet Bit Value
IP Address
192.168.1.
128
IP Address (Binary)
11000000.10101000.00000001.
10
000000
Subnet Mask (Binary)
11111111.11111111.11111111.
11
000000
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 52
Subnet 4
Network number
Last Octet Bit Value
IP Address
192.168.1.
192
IP Address (Binary)
11000000.10101000.00000001.
11
000000
Subnet Mask (Binary)
11111111.11111111.11111111.
11
000000
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 53
Eight subnets
Subnet
Subnet Address
First Address
Last Address
Broadcast Address
1
0
1
30
31
2
32
33
62
63
3
64
65
94
95
4
96
97
126
127
5
128
129
158
159
6
160
161
190
191
Summary of Contents for BCM50a
Page 18: ...18 Figures N0115791 ...
Page 22: ...22 Tables N0115791 ...
Page 28: ...28 Preface N0115791 ...
Page 44: ...44 Chapter 2 Introducing the SMT N0115791 SMT menus at a glance Figure 6 SMT overview ...
Page 52: ...52 Chapter 2 SMT menu 1 general setup N0115791 ...
Page 64: ...64 Chapter 4 LAN setup N0115791 ...
Page 68: ...68 Chapter 5 Internet access N0115791 ...
Page 82: ...82 Chapter 6 Remote Node setup N0115791 ...
Page 114: ...114 Chapter 9 Network Address Translation NAT N0115791 ...
Page 140: ...140 Chapter 12 SNMP Configuration N0115791 ...
Page 144: ...144 Chapter 13 System security N0115791 ...
Page 160: ...160 Chapter 14 System information and diagnosis N0115791 ...
Page 174: ...174 Chapter 15 Firmware and configuration file maintenance N0115791 ...
Page 188: ...188 Chapter 17 Remote Management N0115791 ...
Page 208: ...208 Appendix B Triangle Route N0115791 ...
Page 228: ...228 Appendix D PPPoE N0115791 ...
Page 230: ...230 Appendix E Hardware specifications N0115791 ...
Page 240: ...240 Appendix F IP subnetting N0115791 ...
Page 278: ...278 Appendix G Command Interpreter N0115791 ...
Page 308: ...308 Appendix J Log descriptions N0115791 ...
Page 310: ...310 Appendix K Brute force password guessing protection N0115791 ...