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Internet Protocol (IP)

Hi all,

Today we will see about Internet protocol.

 It is the most open system protocol and can be used for any set of LAN and WAN communications.The best suite protocol for IP is TCP, transmission control protocol and also suites for E-mail, terminal emulation and FTP.

 They were first developed and designed for the purpose of defense advanced research projects agency (DARPA) and introduced a packet-switched network with many research institutions.

 RFC - Request for Comments

 We have familiarized with OSI layer in network protocols, where IP  lays in layer 3 network protocol.

 Kindly comment those where unaware of OSI layers protocol, will discuss in the next post.

 The IP has some addressing information and some control information.IP is referred in RFC 791 and is the primary network-layered protocol in the internet protocol.

 It has two primary  reasons

 1. providing connection less

 2. best-effort delivery of datagrams through an inter network

 3. reassembly of datagrams with maximum transmission unit (MTU)  sizes.

 An IP consists and works in  IPv4 and IPv6.

 IP packet fields
  • Version
  • IP header length
  • type-of-service
  • total length
  • identification
  • flags
  • fragment offset
  • header checksum
  • time-to-live
  • fragment
  • source address
  • destination address
  • data
  • options

IP addressing format

The 32-bit address is grouped into 

8 - bits at a time

separated by ........ (Dots)

and in decimal format .

The bit has a value (128,64,32,16,8,4,2,1)

Example : 192.168.1.0

Classes

A -  127.255.255.255.

B - 191.255.255.255

C- 223.255.255.255

D - 239.255.255.255

E- 254.255.255.255

Next post we will see more about this topics

 Kindly share your comments below

Thanking you

Vinoth Kumar Sritharan
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