Rugged Cams ELX DVR 16 Channel User Manual
Page 77
APPENDIX
ELX16-240
Rugged CCTV.
2003.09.06 (v 1.0)
77
#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
products.
Network ID : It is to identify a network. Generally the first number is assigned as Network ID.
Gatewa y 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