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In computer networking, out-of-order delivery is the delivery of data packets in a different order from which they were sent. Out-of-order delivery can be caused by packets following multiple paths through a network, or via parallel processing paths within network equipment that are not designed to ensure that packet ordering is preserved. One of the functions of TCP is to prevent the out-of-order delivery of data, either by reassembling packets into order or forcing retries of out-of-order packets.
- RFC 4737, Packet Reordering Metrics, A. Morton, L. Ciavattone, G. Ramachandran, S. Shalunov, J. Perser, November 2006
- RFC 5236, Improved Packet Reordering Metrics, A. Jayasumana, N. Piratla, T. Banka, A. Bare, R. Whitner, June 2008
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