Forwarding Component (cont.)

Forwarding Component (cont.)

• Carrying tag information:
  • as part of the Network Layer header
    • Flow Label field in IPv6
      • requires changes to the semantics of the Flow Label field
    • as part of the MAC header
      • VCI/VPI in ATM
    • via a “shim” between the MAC and the Network Layer header

Observation: tag information could be carried over any media

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