Appendix B IP Addresses and Subnetting
P-320W v3 User’s Guide
210
As these two IP addresses cannot be used for individual hosts, calculate the
maximum number of possible hosts in a network as follows:
Notation
Since the mask is always a continuous number of ones beginning from the left,
followed by a continuous number of zeros for the remainder of the 32 bit mask,
you can simply specify the number of ones instead of writing the value of each
octet. This is usually specified by writing a “/” followed by the number of bits in
the mask after the address.
For example, 192.1.1.0 /25 is equivalent to saying 192.1.1.0 with subnet mask
255.255.255.128.
The following table shows some possible subnet masks using both notations.
Table 87
Maximum Host Numbers
SUBNET MASK
HOST ID SIZE
MAXIMUM NUMBER OF
HOSTS
8 bits
255.0.0.0
24 bits
2
24
– 2
16777214
16 bits 255.255.0.0
16 bits
2
16
– 2
65534
24 bits 255.255.255.0
8 bits
2
8
– 2
254
29 bits 255.255.255.2
48
3 bits
2
3
– 2
6
Table 88
Alternative Subnet Mask Notation
SUBNET
MASK
ALTERNATIVE
NOTATION
LAST OCTET
(BINARY)
LAST OCTET
(DECIMAL)
255.255.255.0
/24
0000 0000
0
255.255.255.12
8
/25
1000 0000
128
255.255.255.19
2
/26
1100 0000
192
255.255.255.22
4
/27
1110 0000
224
255.255.255.24
0
/28
1111 0000
240
255.255.255.24
8
/29
1111 1000
248
255.255.255.25
2
/30
1111 1100
252
Summary of Contents for P-320W v3
Page 2: ......
Page 8: ...Safety Warnings P 320W v3 User s Guide 8 ...
Page 10: ...Contents Overview P 320W v3 User s Guide 10 ...
Page 18: ...Table of Contents P 320W v3 User s Guide 18 ...
Page 20: ...20 ...
Page 24: ...Chapter 1 Getting to Know Your P 320W v3 P 320W v3 User s Guide 24 ...
Page 36: ...Chapter 2 Introducing the Web Configurator P 320W v3 User s Guide 36 ...
Page 54: ...54 ...
Page 72: ...Chapter 4 Wireless LAN P 320W v3 User s Guide 72 ...
Page 76: ...Chapter 5 Wireless Client Mode P 320W v3 User s Guide 76 ...
Page 88: ...Chapter 7 LAN P 320W v3 User s Guide 88 ...
Page 104: ...Chapter 10 VLAN P 320W v3 User s Guide 104 ...
Page 105: ...105 PART III Security Firewall 117 Content Filtering 125 ...
Page 106: ...106 ...
Page 116: ...Chapter 11 WAN P 320W v3 User s Guide 116 ...
Page 124: ...Chapter 12 Firewall P 320W v3 User s Guide 124 ...
Page 130: ...130 ...
Page 134: ...Chapter 14 Static Route P 320W v3 User s Guide 134 ...
Page 140: ...Chapter 15 Remote Management P 320W v3 User s Guide 140 ...
Page 154: ...Chapter 16 Universal Plug and Play UPnP P 320W v3 User s Guide 154 ...
Page 155: ...155 PART V Maintenance and Troubleshooting System 157 Logs 163 Product Specifications 193 ...
Page 156: ...156 ...
Page 178: ...Chapter 18 Logs P 320W v3 User s Guide 178 ...
Page 184: ...Chapter 19 Tools P 320W v3 User s Guide 184 ...
Page 192: ...Chapter 20 Troubleshooting P 320W v3 User s Guide 192 ...
Page 196: ...Chapter 21 Product Specifications P 320W v3 User s Guide 196 ...
Page 198: ...198 ...
Page 260: ...Index P 320W v3 User s Guide 260 ...
Page 261: ......
Page 262: ......