| Table of ContentsInternetworking What internetworks are The unifying effect of the network layer Protocol Layers Frame, Datagram, Segment, Packet Functions of layers in the protocol stack Layer 1 Layer 2 Layer 3 Layer 3 Layer 3 Layer 4 Layer 5, 6, 7 Layer interaction Layer interaction Layer interaction Encapsulation Layer 2 - Ethernet frame Layer 3 - IP datagram Layer 4 - TCP segment Purpose of an IP address	 Basic Structure of an IP Address Address Exercise Address Exercise Addressing in Internetworks Address Structure Revisited Network Masks Example Prefixes Special Addresses More Address Exercises Binary arithmetic tutorial Grouping of decimal numbers Grouping of binary numbers Grouping of decimal numbers Grouping of binary numbers Grouping of binary numbers More levels of address hierarchy Old-style classes of IP addresses Old-style classes of IP addresses Implied netmasks of classful addresses Traditional subnetting of classful networks Traditional supernetting Classless addressing Classless addressing example Classless addressing exercise An IP router IP router - action for each packet Forwarding is hop by hop Forwarding table structure Encapsulation (reminder) Classes of links Point to point links Broadcast links Broadcast links NBMA links (Non-broadcast multi-access) Ethernet Essentials Ethernet/IP Address Resolution Address Resolution Protocol |