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  1. EtherNet/IP Firmware V3
  2. PSEISV3-27

Use a random initial sequence number for IO connections and check for a sequence number gap

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: V3.0.7.0
    • Fix Version/s: V3.0.9.0
    • Component/s: None
    • Labels:
      None
    • Account:
      SPC EthernetIp Slave (SPCETHERNE)

      Description

      When targets and originators begin producing data on a transport class 0 or 1 connection, a
      random initial Encapsulation Sequence Number shall be used.
      In addition, Packets shall be discarded if the Encapsulation Sequence Number is greater than the last
      received and accepted Encapsulation Sequence Number plus the Allowed Sequence Number
      Gap. For more information see CIP Volume 2 Edition 1.17 Chapter 3-4.1 "CIP Transport Class 0 and Class 1 Packet Ordering".

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                  • Reporter:
                    RHornung Ralf Hornung
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                    Dates

                    • Created:
                      Updated:
                      Resolved: