tailieunhanh - Address Resolution Protocol (ARP)

• 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 | Address Resolution Protocol ARP Relates to Lab 2. This module is about the address resolution protocol. 1 Media 2 1 ARP and RARP 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 3 Processing of IP packets by network device drivers 4 2 Address Translation with ARP ARP Request Argon broadcasts an ARP request to all stations on the network What is the hardware address of Router137 Argon 00 a0 24 71 e4 44 Router 37 00 e0 f9 23 a8 20 Address Translation with ARP ARP Reply Router 137 responds with an ARP Reply which contains the hardware address Argon 00 a0 24 71 e4 44 Routed 37 00 e0 f9 23 aS 20 6

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