Forwarding Component (cont.)

Forwarding Component (cont.)

• Forwarding algorithm:
  • extract tag from a packet
  • find an entry in the TIB with the incoming tag equal to the tag in the packet
  • replace the tag in the packet with the outgoing tag(s) (from the found entry)
  • send the packet on the outgoing interface(s) (from the found entry)

Observation: forwarding algorithm is Network Layer independent

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