Division of IP Address Class

Division of IP Address Class

Number of IP address that is theoretically available 255x255x255x255 around 4 billion or more that must be distributed to all internet users throughout the world. The division of classes is intended to facilitate the allocation of IP Address, better for the host / network or for certain specific purposes.

IP Address can be separated into 2 parts, namely the network (net ID) and the host (host ID). Net ID to participate in the identification of a network from another network, while the host ID identifies a role for the host in a network. So, all hosts are connected in the same network have the same net ID. Some of the bit-bit from the beginning of the IP Address is the network bit / network number, while the rest is for the host. Dividing line between the network and the host is not fixed, depending on the class network. IP address is divided into five classes, namely class A, class B, class C, class D and class E.

Differences in each class is on the size and amount. For example IP class A network used by a few but the number of hosts that can ditampung by each network is very large. Class D and E is not used in general, the class D is used for network multicast, and class E for experimental keprluan. Internet Protocol software determines the type of division of this class with a few test bits of the first IP Address.

The first bit IP address class A is 0, with the long 8-bit net ID and host ID length of 24 bits. Be the first byte IP address class A has a range from 0-127. So there is in the 127 class A network with each network can accommodate about 16 million hosts (255x255x255). IP address assigned to the class A network with the number of hosts that are very large.
IP address class A
Two-bit IP address class B is always set to 10 so that the first byte is always worth between 128-191. Network ID is 16 bit and 16 bit host ID and the rest is so that if the computer has IP address, the network ID = 167205 and host ID = 26161. On. IP address class B has a range of IP from 191.155.xxx.xxx to 128.0.xxx.xxx, ie, the network was 65,255 with the number of hosts in each network host 255 x 255, or approximately 65 thousand hosts.

IP address class B
Class C IP address is used to initially small-sized networks such as LAN. Bit the first three class C IP address is always set to 111. Network ID consists of 24 bit and 8-bit host ID, so can the rest of about 2 million network with each network has 256 hosts.

Class C IP address
Class C IP address used for multicasting. 4-bit first-class C IP address is always set to 1110 so that the first byte in the range of 224-247, while the next bit-bit is set according to the needs multicast group that uses this IP address. In multicasting is not known term network ID and host ID.
Class E IP address is not for public use. First 4-bit IP address class is set in 1111 so that the first byte in the range of 248-255.
Also known as the additional term Network Prefix, which is used for the IP address that refers to the network prefix is jaringan.Penulisan with a slash "/" followed by numbers that indicate the network prefix length in bits. Eg to appoint a class B network 167.205.xxx.xxx used 167205/16 writing. Figures 16 is a bit long for the network prefix class B.

Configure TCP / IP
Implementation of the TCP / IP protocol on Windows98 includes standard TCP / IP, with kompatible
TCP / IP-based network. Standard protocol TCP / IP, including:
1. Internet Protocol,
2. Transmission Control Protocol (TCP),
3. Internet Control Message Protocol (ICMP),
4. Address Resolusion Protocol (ARP),
5. User Datagram Protocol (UDP).
TCP / IP must be configured before the first order to "communicate" in the network
computer. Each card is a computer network has been installed and requires a subnet IP address
mask. IP address must be unique (different from the other computers), the subnet mask is used to
distinguish the network ID of the host ID.
Provide IP Address
IP address and subnet mask can be provided automatically using Dynamic Host
Configuration Protocol (DHCP) or manually disi.

Procedures are conducted to fill in IP address:
1. Open the Control Panel and double-click the Network icon.
2. In the Configuration tab, click TCP / IP is in the list for network cards that have been
3. Click Properties.
4. In the IP Address tab, there are 2 options:
* Obtain an IP address automatically
Akan IP address obtained through DHCP facilities. DHCP function to provide IP address
automatically on a computer that uses TCP / IP. DHCP working relationships with
client-server, the DHCP server provides the IP address of a group that can be given
on the DHCP client. In providing this IP address, DHCP IP address only lend
it. So the IP address this ongoing dynamic.
* Specify an IP address
IP address and subnet mask manually filled.
5. Click OK.
6. If necessary re-entry to the dialog box in the TCP / IP Properties, click the Gateway tab,
enter the server address.
7. Click OK.
8. If required to activate the Windows Internet Naming Service (Wins) server, re -
in the dialog box to TCP / IP Properties, click the Wins Configuration tab, and click Enable
Wins Resolution and number of entries the server address.
9. If required to activate the domain name system (DNS), back to the box
dialogue TCP / IP Properties, click the DNS Configuration tab, click Enable DNS, enter the number
the server address.
10. Click OK.