Appendix B IP Addresses and Subnetting
P-873HNU(P)-51B User’s Guide
301
Subnet Planning
The following table is a summary for subnet planning on a network with a 24-bit network number.
The following table is a summary for subnet planning on a network with a 16-bit network number.
Configuring IP Addresses
Where you obtain your network number depends on your particular situation. If the ISP or your
network administrator assigns you a block of registered IP addresses, follow their instructions in
selecting the IP addresses and the subnet mask.
If the ISP did not explicitly give you an IP network number, then most likely you have a single user
account and the ISP will assign you a dynamic IP address when the connection is established. If this
is the case, it is recommended that you select a network number from 192.168.0.0 to
192.168.255.0. The Internet Assigned Number Authority (IANA) reserved this block of addresses
specifically for private use; please do not use any other number unless you are told otherwise. You
must also enable Network Address Translation (NAT) on the VDSL Router.
Table 122
24-bit Network Number Subnet Planning
NO. “BORROWED”
HOST BITS
SUBNET MASK
NO. SUBNETS
NO. HOSTS PER
SUBNET
1
255.255.255.128 (/25)
2
126
2
255.255.255.192 (/26)
4
62
3
255.255.255.224 (/27)
8
30
4
255.255.255.240 (/28)
16
14
5
255.255.255.248 (/29)
32
6
6
255.255.255.252 (/30)
64
2
7
255.255.255.254 (/31)
128
1
Table 123
16-bit Network Number Subnet Planning
NO. “BORROWED”
HOST BITS
SUBNET MASK
NO. SUBNETS
NO. HOSTS PER
SUBNET
1
255.255.128.0 (/17)
2
32766
2
255.255.192.0 (/18)
4
16382
3
255.255.224.0 (/19)
8
8190
4
255.255.240.0 (/20)
16
4094
5
255.255.248.0 (/21)
32
2046
6
255.255.252.0 (/22)
64
1022
7
255.255.254.0 (/23)
128
510
8
255.255.255.0 (/24)
256
254
9
255.255.255.128 (/25)
512
126
10
255.255.255.192 (/26)
1024
62
11
255.255.255.224 (/27)
2048
30
12
255.255.255.240 (/28)
4096
14
13
255.255.255.248 (/29)
8192
6
14
255.255.255.252 (/30)
16384
2
15
255.255.255.254 (/31)
32768
1
Summary of Contents for P-873HNU-51B
Page 4: ...Contents Overview P 873HNU P 51B User s Guide 4...
Page 13: ...Table of Contents P 873HNU P 51B User s Guide 13 Appendix F Legal Information 329 Index 333...
Page 14: ...Table of Contents P 873HNU P 51B User s Guide 14...
Page 15: ...15 PART I User s Guide...
Page 16: ...16...
Page 32: ...Chapter 2 The Web Configurator P 873HNU P 51B User s Guide 32...
Page 57: ...57 PART II Technical Reference...
Page 58: ...58...
Page 64: ...Chapter 5 Network Map and Status Screens P 873HNU P 51B User s Guide 64...
Page 108: ...Chapter 7 Wireless P 873HNU P 51B User s Guide 108...
Page 132: ...Chapter 9 Static Routing P 873HNU P 51B User s Guide 132...
Page 152: ...Chapter 10 Quality of Service QoS P 873HNU P 51B User s Guide 152...
Page 168: ...Chapter 11 Network Address Translation NAT P 873HNU P 51B User s Guide 168...
Page 182: ...Chapter 13 IGMP P 873HNU P 51B User s Guide 182...
Page 188: ...Chapter 14 Interface Group P 873HNU P 51B User s Guide 188...
Page 202: ...Chapter 17 Parental Control P 873HNU P 51B User s Guide 202...
Page 224: ...Chapter 22 Logs P 873HNU P 51B User s Guide 224...
Page 234: ...Chapter 25 xDSL Statistics P 873HNU P 51B User s Guide 234...
Page 238: ...Chapter 26 Users Configuration P 873HNU P 51B User s Guide 238...
Page 244: ...Chapter 27 Remote Management P 873HNU P 51B User s Guide 244...
Page 250: ...Chapter 29 Logs Setting P 873HNU P 51B User s Guide 250...
Page 256: ...Chapter 31 Configuration P 873HNU P 51B User s Guide 256...
Page 262: ...Chapter 32 Diagnostic P 873HNU P 51B User s Guide 262...
Page 274: ...Chapter 34 Product Specifications P 873HNU P 51B User s Guide 274...
Page 310: ...Appendix C Pop up Windows JavaScript and Java Permissions P 873HNU P 51B User s Guide 310...
Page 324: ...Appendix D Wireless LANs P 873HNU P 51B User s Guide 324...