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Behavior of the Acknowledging Peer

The acknowledging peer examines the request messages it receives. It compares the source instance in each subsequent request message with the previous value. If the value differs or is set to zero, then the acknowledging peer treats the requesting peer as if communication has been lost.

The acknowledging peer also determines whether the requesting peer is reflecting back the acknowledging peer’s source instance. It compares the destination instance value in each request message with the source instance value that it most recently advertised to the requesting peer. If the requesting peer advertises a wrong value in the destination instance field of the request message, then the acknowledging peer treats the requesting peer as if communication has been lost.

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