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Article | REF: TE7612 V1

The assets of the protocol Port Control Protocol (PCP)

Authors: Mohamed BOUCADAIR, Christian JACQUENET

Publication date: November 10, 2014 | Lire en français

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    5. Advanced functions

    5.1 Reinstalling a context

    PCP clients use the "Epoch" parameter to detect server-side anomalies.

    Example

    If the PCP server has been restarted due to an operation by an administrator or a power problem, or if the server has lost its states, etc., the PCP server must reset the "Epoch" parameter to "0". The "Epoch" parameter must also be reset if the address allocated to a client by the function controlled by the PCP server has changed. If an anomaly has been detected by a PCP client, it must immediately reinstall the lost contexts by sending back the corresponding PCP messages.

    Note that an anomaly consists in detecting a one-second difference (plus or...

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