P-2608HWL-Dx Series User’s Guide
Appendix C IP Addresses and Subnetting
383
Host IDs of all zeros represent the subnet itself and host IDs of all ones are the broadcast
address for that subnet, so the actual number of hosts available on each subnet in the example
above is 2
7
– 2 or 126 hosts for each subnet.
192.168.1.0 with mask 255.255.255.128 is the subnet itself, and 192.168.1.127 with mask
255.255.255.128 is the directed broadcast address for the first subnet. Therefore, the lowest IP
address that can be assigned to an actual host for the first subnet is 192.168.1.1 and the highest
is 192.168.1.126. Similarly the host ID range for the second subnet is 192.168.1.129 to
192.168.1.254.
Example: Four Subnets
The above example illustrated using a 25-bit subnet mask to divide a class “C” address space
into two subnets. Similarly to divide a class “C” address into four subnets, you need to
“borrow” two host ID bits to give four possible combinations (00, 01, 10 and 11). The subnet
mask is 26 bits (11111111.11111111.11111111.
11
000000) or 255.255.255.192. Each subnet
contains 6 host ID bits, giving 2
6
-2 or 62 hosts for each subnet (all zeroes is the subnet itself,
all ones is the broadcast address on the subnet).
Subnet Address: 192.168.1.0
Lowest Host ID: 192.168.1.1
Broadcast Address:
192.168.1.127
Highest Host ID: 192.168.1.126
Table 151
Subnet 2
IP/SUBNET MASK
NETWORK NUMBER
LAST OCTET BIT VALUE
IP Address
192.168.1.
128
IP Address (Binary)
11000000.10101000.00000001.
1
0000000
Subnet Mask
255.255.255.
128
Subnet Mask (Binary)
11111111.11111111.11111111.
1
0000000
Subnet Address:
192.168.1.128
Lowest Host ID: 192.168.1.129
Broadcast Address:
192.168.1.255
Highest Host ID: 192.168.1.254
Table 150
Subnet 1 (continued)
IP/SUBNET MASK
NETWORK NUMBER
LAST OCTET BIT
VALUE
Table 152
Subnet 1
IP/SUBNET MASK
NETWORK NUMBER
LAST OCTET BIT
VALUE
IP Address
192.168.1.
0
IP Address (Binary)
11000000.10101000.00000001.
00
000000
Subnet Mask (Binary)
11111111.11111111.11111111.
11
000000
Содержание P-2608HWL-D1
Страница 1: ...P 2608HWL Dx Series 802 11g Wireless ADSL2 VoIP IAD User s Guide Version 3 40 10 2006 Edition 1 ...
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Страница 7: ...P 2608HWL Dx Series User s Guide Safety Warnings 7 This product is recyclable Dispose of it properly ...
Страница 24: ...P 2608HWL Dx Series User s Guide 24 Table of Contents ...
Страница 32: ...P 2608HWL Dx Series User s Guide 32 List of Figures ...
Страница 38: ...P 2608HWL Dx Series User s Guide 38 List of Tables ...
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 ...