VES-1616F/1624F-44 User’s Guide
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Appendix B 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 99
Alternative Subnet Mask Notation (continued)
SUBNET MASK
SUBNET MASK “1” BITS
LAST OCTET BIT VALUE
DECIMAL
Table 100
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 101
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 VES-1616F-44
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Страница 9: ...VES 1616F 1624F 44 User s Guide 8 Customer Support...
Страница 23: ...VES 1616F 1624F 44 User s Guide 22 List of Figures...
Страница 27: ...VES 1616F 1624F 44 User s Guide 26 List of Tables...
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...
Страница 281: ...VES 1616F 1624F 44 User s Guide 280 Product Specifications...