VES-1616F/1624F-44 User’s Guide
Appendix B IP Addresses and Subnetting
285
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 102
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 101
Subnet 1 (continued)
IP/SUBNET MASK
NETWORK NUMBER
LAST OCTET BIT
VALUE
Table 103
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 VES-1616F-44
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Страница 9: ...VES 1616F 1624F 44 User s Guide 8 Customer Support...
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Страница 35: ...VES 1616F 1624F 44 User s Guide 34 Chapter 1 Getting to Know Your Switch Figure 2 Curbside Application...
Страница 53: ...VES 1616F 1624F 44 User s Guide 52 Chapter 4 The Web Configurator...
Страница 63: ...VES 1616F 1624F 44 User s Guide 62 Chapter 5 System Status and Port Statistics...
Страница 87: ...VES 1616F 1624F 44 User s Guide 86 Chapter 7 VLAN Figure 35 VLAN Static VLAN Port Isolation Setup All Connected...
Страница 90: ...VES 1616F 1624F 44 User s Guide Chapter 7 VLAN 89 Figure 37 Port Based VLAN Setup All Connected...
Страница 93: ...VES 1616F 1624F 44 User s Guide 92 Chapter 7 VLAN...
Страница 103: ...VES 1616F 1624F 44 User s Guide 102 Chapter 10 Spanning Tree Protocol...
Страница 117: ...VES 1616F 1624F 44 User s Guide 116 Chapter 15 Port Authentication...
Страница 139: ...VES 1616F 1624F 44 User s Guide 138 Chapter 18 Queuing Method...
Страница 145: ...VES 1616F 1624F 44 User s Guide 144 Chapter 19 Classifier...
Страница 150: ...VES 1616F 1624F 44 User s Guide Chapter 20 Policy 149 Figure 73 Policy Example...
Страница 151: ...VES 1616F 1624F 44 User s Guide 150 Chapter 20 Policy...
Страница 157: ...VES 1616F 1624F 44 User s Guide 156 Chapter 21 VLAN Stacking...
Страница 165: ...VES 1616F 1624F 44 User s Guide 164 Chapter 22 Multicast...
Страница 173: ...VES 1616F 1624F 44 User s Guide 172 Chapter 23 Multicast VLAN Registration...
Страница 177: ...VES 1616F 1624F 44 User s Guide 176 Chapter 24 DHCP...
Страница 181: ...VES 1616F 1624F 44 User s Guide 180 Chapter 25 Differentiated Services...
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Страница 183: ...VES 1616F 1624F 44 User s Guide 182 Chapter 25 Differentiated Services...
Страница 193: ...VES 1616F 1624F 44 User s Guide 192 Chapter 27 Maintenance...
Страница 195: ...VES 1616F 1624F 44 User s Guide 194 Chapter 28 Diagnostic...
Страница 199: ...VES 1616F 1624F 44 User s Guide 198 Chapter 29 Syslog...
Страница 259: ...VES 1616F 1624F 44 User s Guide 258 Chapter 33 Command Examples...
Страница 267: ...VES 1616F 1624F 44 User s Guide 266 Chapter 34 IEEE 802 1Q Tagged VLAN Commands...
Страница 277: ...VES 1616F 1624F 44 User s Guide 276 Chapter 35 Troubleshooting...
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