8- and 24-Port Gigabit L2 Managed Power-over-Ethernet (PoE) Switches
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NOTE: If the PC connects directly to the switch, you have to setup the same subnet mask between them. The subnet mask may be different
for the PC at the remote site.
2. Run CLI or web browser and follow the menu. Refer to Chapters 4 and 5.
Figure 3-10. Login Screen for Web.
3.5 IP Address Assignment
For IP address configuration, there are three parameters you need to fill in. They are IP address, Subnet Mask, Default Gateway and DNS.
3.5.1 IP address
The address of the network device is used for internetworking communication. Its address structure is shown in Figure 3-11. It is split into
predefined address classes or categories.
Each class has its own network range between the network identifier and host identifier in the 32-bit address. Each IP address consists of
two parts: network identifier (address) and host identifier (address). The former indicates the network where the addressed host resides,
and the latter indicates the individual host in the network that the address of host refers to. The host identifier must be unique in the same
LAN. The IP address we used is version 4, known as IPv4.
Figure 3-11. IP address structure.
Classifying addresses divides the IP address into three classes: class A, class B, and class C. The rest of the IP addresses are for multicast
and broadcast. The bit length of the network prefix is the same as that of the subnet mask and is denoted as IP address/Xl for example,
192.168.1.0/24. Each class has its address range described below.
Class A:
Address is less than 126.255.255.255. There are a total of 126 networks can be defined because the address 0.0.0.0 is reserved for default
route and 127.0.0.0/8 is reserved for loopback function.
Class B:
The IP address ranges between 128.0.0.0 and 191.255.255.255. Each class B network has a 16-bit network prefix followed by a 16-bit host
address. There are 16,384 (214)/16 networks that can be defined with a maximum of 65534 (216-2) hosts per network.