TCP sender stuck with timer in persist state missing window updates

Solution In Progress - Updated -


  • TCP Sender connection shows large send queue with timer stuck in persist awaiting window update from zero window state.
  • Receiver has zero size receive queue and has sent window update that is ignored/missed by sender.


  • Red Hat Enterprise Linux 4 (RHEL4)
  • Red Hat Enterprise Linux 5 (RHEL5)
  • Red Hat Enterprise Linux 6 (RHEL6)
  • Red Hat Enterprise Linux 7 (RHEL7)
  • Red Hat Enterprise Linux 8 (RHEL8)
  • TCP Sequence number has wrapped while processing in optimized bulk data reception.

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