Ip Address Assignment; Ip Address - Black Box 12-Port 1000BASE-TX L2 Managed PoE Switch User Manual

3.5 IP Address Assignment

For IP address configuration, you will need the switch's IP address, subnet mask, default gateway, and DNS.
3.5.1 IP A
DDRESS
The network device's address is used for internetworking communication. The 32-bit address consists of a
network identifier and a host identifier. It's 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 has two parts: network identifier (address) and host identifier (address). The network address
is the network where the addressed host resides, and the host identifier indicates the individual host in the
network that the host address refers to. The host identifier must be unique in the same LAN.
The IP address is divided into three classes: class A, class B, and class C. The rest of the IP addresses are used for
multicast and broadcast. The network prefix's bit length is the same as that of the subnet mask and is denoted
as IP address/X, for example, 192.168.1.0/24. The address range for each class is described below.
Class A
The address is less than 126.255.255.255. A total of 126 networks can be defined. (The address 0.0.0.0 is
reserved for default route and 127.0.0.0/8 is reserved for loop back 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
of65534 (216-2) hosts per network.
Class C
The IP address ranges between 192.0.0.0 and 223.255.255.255. Each class C network has a 24-bit network prefix
followed by an 8-bit host address. A total of 2,097,152 (221)/24 networks can be defined with a maximum of
254(28-2) hosts per network.
Class D and E
Class D is a class with the first 4 MSBs (Most Significant Bits) set to 1-1-1-0 and is used for IP Multicast. See also
RFC 1112. Class E is a class with the first 4 MSBs set to 1-1-1-1 and is used for IP broadcast.
According to IANA (Internet Assigned Numbers Authority), three specific IP address blocks (called a private IP
address) are reserved for extending an internal network. They are listed below.
Class A 10.0.0.0---10.255.255.255
Class B 172.16.0.0---172.31.255.255
Class C 192.168.0.0---192.168.255.255
Refer to RFC 1597 and RFC 1466 for more information. These documents are available at www.faqs.org.
CHAPTER 3: Installation
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