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13.7. Receiving link state acknowledgments Connected: An Internet Encyclopedia
13.7. Receiving link state acknowledgments

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Next: 14. Aging The Link State Database

13.7. Receiving link state acknowledgments

13.7. Receiving link state acknowledgments

Many consistency checks have been made on a received Link State Acknowledgment packet before it is handed to the flooding procedure. In particular, it has been associated with a particular neighbor. If this neighbor is in a lesser state than Exchange, the Link State Acknowledgment packet is discarded.

Otherwise, for each acknowledgment in the Link State Acknowledgment packet, the following steps are performed:

  • Does the advertisement acknowledged have an instance on the Link state retransmission list for the neighbor? If not, examine the next acknowledgment. Otherwise:

  • If the acknowledgment is for the same instance that is contained on the list, remove the item from the list and examine the next acknowledgment. Otherwise:

  • Log the questionable acknowledgment, and examine the next one.


Next: 14. Aging The Link State Database

Connected: An Internet Encyclopedia
13.7. Receiving link state acknowledgments

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