Appendix 6 Network Connection Instructions
BECS-D19 User’s Manual
161
The following example will explain the network number and computer number of C
type.
Network
Network Number
Computer Number
1
192.168.1
.1
1
192.168.1
.2
1
192.168.1
.3
1
192.168.1
.4
2
192.168.2
.1
2
192.168.2
.2
2
192.168.2
.3
2
192.168.2
.4
3.
Subnet Mask
To ensure how the network number and computer number are divided, subnet mask
is used to tell in one IP address which part is for network and which part is for computer.
It’s regulated that “1” is for network part and “0” is for computer part. IP address and
subnet mask combine to tell in which network the computer is. So the subnet mask is very
important. If it’s wrong, it will get the wrong network address. Therefore the same
network number must be set with the same subnet mask.
4.
Gateway
It’s the IP address of the router which is in the same subnet of the computer. As in the
followed picture, if one data packet is to be transmitted to a computer in network 2, this
data packet has to be sent to the router linked to us. It’s like in sending by post that you
only need to deliver a letter to postman instead of delivering by yourself. So when the
computers are not in the same network segment, the gateway also has to be set properly in
setting computers. Otherwise computers don’t know where to deliver the data packet.
