networking chapter ii
DESCRIPTION
Networking slides (part - II) talks about OSI Layering and Internet ArchitectureTRANSCRIPT
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Why layering ? Break-down of responsibilities Making it simple Network abstraction
OS Independence Hardware independence Migration issues
Increase in network applications
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OSI Layers
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TCP/IP Reference model
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TCP/IP properties Flexible architecture Backbone of modern Internet Suite of protocols Well defined standards Request For Comments (RFC)
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OSI and TCP/IP
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Implementation details
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Protocol data flow
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Ethernet technology Popular LAN technology IEEE 802.3 MAC and LLC layers Variants:
Thin-wire Ethernet Co-axial cable Twisted pair
LAN connectors Switches and Hubs Routers and Switches
MAC and LLC layers
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Basics of addressing
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Ethernet address and frame format 48 bit MAC address
Unicast Multicast Broadcast
Ethernet frame fields Preamble Source & destination MAC address Frame type Data & MTU CRC
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Internet ArchitectureNetwork abstractionDynamic path discoveryOS independenceThe ‘Unified’ and ‘All the same’ experienceThe internet ‘Backbone’
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Internet backbone of Japan
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