Non Flow Based Qos

• packet headers are “marked” at edge of network

  precedence bits most common place to mark
  

• one or more bits used

  two (priority and best effort) or more levels
  

• different mechanisms proposed

  drop priority
  
  queue selector - WFQ on queues

• contract with ISP, contract between ISPs

  a problem if too much traffic for destination
  

• new (unproven) ideas

• creates N predictive Vnets on same Pnet

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