P-2608HWL-Dx Series User’s Guide
382
Appendix C IP Addresses and Subnetting
The first mask shown is the class “C” natural mask. Normally if no mask is specified it is
understood that the natural mask is being used.
Example: Two Subnets
As an example, you have a class “C” address 192.168.1.0 with subnet mask of 255.255.255.0.
The first three octets of the address make up the network number (class “C”).
To make two networks, divide the network 192.168.1.0 into two separate subnets by
converting one of the host ID bits of the IP address to a network number bit. The “borrowed”
host ID bit can be either “0” or “1” thus giving two subnets; 192.168.1.0 with mask
255.255.255.128 and 192.168.1.128 with mask 255.255.255.128.
Note:
In the following charts, shaded/bolded last octet bit values indicate host ID bits
“borrowed” to make network ID bits. The number of “borrowed” host ID bits
determines the number of subnets you can have. The remaining number of
host ID bits (after “borrowing”) determines the number of hosts you can have
on each subnet.
255.255.255.240
/28
1111 0000
240
255.255.255.248
/29
1111 1000
248
255.255.255.252
/30
1111 1100
252
Table 148
Alternative Subnet Mask Notation (continued)
SUBNET MASK
SUBNET MASK “1” BITS
LAST OCTET BIT VALUE
DECIMAL
Table 149
Two Subnets Example
IP/SUBNET MASK
NETWORK NUMBER
HOST ID
IP Address
192.168.1.
0
IP Address (Binary)
11000000.10101000.00000001.
00000000
Subnet Mask
255.255.255.
0
Subnet Mask (Binary)
11111111.11111111.11111111.
00000000
Table 150
Subnet 1
IP/SUBNET MASK
NETWORK NUMBER
LAST OCTET BIT
VALUE
IP Address
192.168.1.
0
IP Address (Binary)
11000000.10101000.00000001.
0
0000000
Subnet Mask
255.255.255.
128
Subnet Mask (Binary)
11111111.11111111.11111111.
1
0000000
Содержание P-2608HWL-D1
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Страница 7: ...P 2608HWL Dx Series User s Guide Safety Warnings 7 This product is recyclable Dispose of it properly ...
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Страница 44: ...P 2608HWL Dx Series User s Guide 44 Chapter 1 Getting To Know the ZyXEL Device ...
Страница 66: ...P 2608HWL Dx Series User s Guide 66 Chapter 3 Internet and Wireless Setup Wizard ...
Страница 72: ...P 2608HWL Dx Series User s Guide 72 Chapter 4 VoIP Wizard And Example ...
Страница 78: ...P 2608HWL Dx Series User s Guide 78 Chapter 5 Bandwidth Management Wizard ...
Страница 88: ...P 2608HWL Dx Series User s Guide 88 Chapter 6 Status Screens ...
Страница 118: ...P 2608HWL Dx Series User s Guide 118 Chapter 8 LAN Setup ...
Страница 138: ...P 2608HWL Dx Series User s Guide 138 Chapter 9 Wireless LAN ...
Страница 166: ...P 2608HWL Dx Series User s Guide 166 Chapter 11 SIP ...
Страница 176: ...P 2608HWL Dx Series User s Guide 176 Chapter 12 Phone ...
Страница 184: ...P 2608HWL Dx Series User s Guide 184 Chapter 13 Phone Book ...
Страница 206: ...P 2608HWL Dx Series User s Guide 206 Chapter 16 Firewall Configuration Figure 107 Firewall Edit Rule ...
Страница 220: ...P 2608HWL Dx Series User s Guide 220 Chapter 17 Content Filtering ...
Страница 257: ...P 2608HWL Dx Series User s Guide Chapter 19 Certificates 257 Figure 138 My Certificate Details ...
Страница 268: ...P 2608HWL Dx Series User s Guide 268 Chapter 19 Certificates Figure 146 Trusted Remote Host Details ...
Страница 276: ...P 2608HWL Dx Series User s Guide 276 Chapter 20 Static Route ...
Страница 288: ...P 2608HWL Dx Series User s Guide 288 Chapter 21 Bandwidth Management ...
Страница 292: ...P 2608HWL Dx Series User s Guide 292 Chapter 22 Dynamic DNS Setup ...
Страница 306: ...P 2608HWL Dx Series User s Guide 306 Chapter 23 Remote Management Configuration ...
Страница 318: ...P 2608HWL Dx Series User s Guide 318 Chapter 24 Universal Plug and Play UPnP ...
Страница 324: ...P 2608HWL Dx Series User s Guide 324 Chapter 25 System ...
Страница 344: ...P 2608HWL Dx Series User s Guide 344 Chapter 27 Tools ...
Страница 348: ...P 2608HWL Dx Series User s Guide 348 Chapter 28 Diagnostic ...
Страница 360: ...P 2608HWL Dx Series User s Guide 360 Chapter 29 Troubleshooting ...
Страница 378: ...P 2608HWL Dx Series User s Guide 378 Appendix B Setting up Your Computer s IP Address ...
Страница 402: ...P 2608HWL Dx Series User s Guide 402 Appendix F Triangle Route ...
Страница 440: ...P 2608HWL Dx Series User s Guide 440 Appendix H Internal SPTGEN ...