4CSE3213_02_PacketSwitchingW2012

4CSE3213_02_PacketSwitchingW2012 - Computer-to-Computer...

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16 ARPANET: Routing Computer-to-Computer Networks (cont.) each packet switch contains routing / forwarding tables (‘ next hop per destination’ tables ) each packet contains destination address packet switch looks at routing table and forwards packet in right direction connectionless service (QoS) no connection setup is required prior to packet transmission packets are buffered at packet switches to await transmission on appropriate link packets from different users are multiplexed on links between packet switches packet switch packet switch packet switch packet switch packet switch Routing Table Dest : Next Hop : xyz abc wvr edf Packet A Packet B Packet A Packet B Packet A Packet B
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17 Computer-to-Computer Networks (cont.) ARPANET: Other Challenges! error control between adjacent packet switches enables faster error recovery partial responsibility of IP protocol congestion control inside the network prevents buffer overflow at core packet switches
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This note was uploaded on 02/14/2012 for the course CSE 3213 taught by Professor A during the Winter '10 term at York University.

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4CSE3213_02_PacketSwitchingW2012 - Computer-to-Computer...

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