ELX4 | APPENDIX |
#2.3 C-class Network
1)Features of Addresses
IP address: Three digits number in room ‘X4’ are for Host ID, and the numbers are from 0 to 255. Among the numbers, 0 is used for Network ID, 1 is used for Router IP (Gateway address) and 255 is used for Broadcast address. Therefore the numbers from 2 to 244 are IP addresses that can be assigned to,
Network ID : It is to identify a network. Generally the first number is assigned as Network ID.
Gateway address : It is an IP address of router that is connecting Internet and local network. Remote users can access local network over Internet through the gateway (router). Generally the second number is assigned as Gateway address.
Broadcast address: It is to broadcast to all devices that are connected on local network. Broadcast address is a destination for broadcasting and it is determined by calculating. All devices connected on local network have a same Broadcast address.
Subnet Mask: It is to divide a local network into two remote networks. Subnet mask shows the IP quantity in a certain network. The numbers that can be used as subnet mask are limited (0, 4, 8, 16, 32, 64, 128)
2) Network configuration
(1) To use as one network
Network ID: xxx.xxx.xxx.0
Gateway Address: xxx.xxx.xxx.1
Subnet Mask: 255.255.255.0
Broadcast Address: xxx.xxx.xxx.255
IP Addresses: xxx.xxx.xxx.2 – xxx.xxx.xxx.254
70 | 2003.05.21 (v 1.0) | Rugged CCTV |