IP ADDRESS AND ROUTING
INTERNET PROTOCOL The IP is a N/W layer protocol that contains addressing information and some control information that enable packets to be routed. The IP consist of a suite of communication protocols, of which the two best known are the Transmission Control Protocol and Internet Protocol (TCP/IP). IP has two primary responsibilities: •Providing connectionless, best-effort delivery of datagram's through an internetwork •Providing fragmentation and reassembly of datagram’s to support data links with different Maximum Transmission Units(MTU). IPv4 DATAGRAM • VER(4 bits) : Version of the IP protocol. • HLEN(4 bits) : Length of the Header, Expressed as the number of 32 bit words. Min Size is 5 and Max Size is 15. • TOTAL LENGTH (16 bits) : Length in bytes of datagram, including headers. Max Datagram Size is (2 16) 65...