Arp packets

• Note: – The Internet is based on IP addresses – Data link protocols (Ethernet, FDDI, ATM) may have different (MAC) addresses • The ARP and RARP protocols perform the translation between IP addresses and MAC layer addresses • We will discuss ARP for broadcast LANs, particularly Ethernet LANs

6p collagenaaa 26-09-2013 77 1   Download

In this part • Network Interface (naming, type ....) • Network Configuration Files • Interface control command and scripts • Basic routing using route command Network interface • The first Ethernet NIC is given the alias eth0, the second Ethernet NIC is given the alias eth1, and so on. • Loopback lo.

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The U.S. Department of Defense (DoD) created the TCP/IP reference model because it wanted a network that could survive any conditions. The TCP/IP model has since become the standard on which the Internet is based. In 1992 the standardization of a new generation of IP, often called IPng, was supported by the Internet Engineering Task Force (IETF). IPng is now known as IPv6.

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ARP performs IP address-to-Media Access Control (MAC) address resolution for outgoing packets. As each outgoing IP datagram is encapsulated in a frame, source and destination media access control addresses must be added. Determining the destination media access control address for each frame is the responsibility of ARP.

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