Real-time support

• Flow label and the “class” octet field

• Flow = sequence of packets from a single source to a particular (unicast/multicast) destinations requiring special handling by intermediate routers

• Applications becoming adaptive

  • Even adaptive voice available for IP telephony

• Hierarchical transmissions:

  • Can cause congestion {Steve McCanne, SIGCOMM’96} =>“priority” renamed as “class”
  • “Class” field currently being worked upon by differentiated services group

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