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Computer Networks 2014-09-24

2014/09/24 Computer Networks Class Note

         circuit       hard-state      soft-state      stateless
         switching     switching       switching       routing
    stateful|---------------+--------------+---------------|stateless
          POTS     |       ATM           MPLS          Internet
                   |                                   (packet
               C/S | P/S                                switching)
  • ISPs change part of backbone into MPLS

  • store and forward

  • when a packet arrived

    • store in a queue (waiting time)
    • waiting to be processed
    • queue for output port (waiting time)
    • transmitted (transmission time)
    • xxx (propagation time)
  • how fast I can speak: transmission time

  • jitter: latency variation

  • throughput: how much you can transmit