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    • How to test communication between SC and SPL/SCC service on Linux machines
      https://kb.netapp.com/data-mgmt/SnapCenter/SC_KBs/How_to_test_communication_between_SC_and_SPL_SCC_service_on_Linux_machines
      Applies to SnapCenter Server (SC) SnapCenter Plug-in Loader service (SPL) SnapCenter co-located SmCore service (SCC) Linux Plug-in host Description To ensure that third-party security devices/applicat...Applies to SnapCenter Server (SC) SnapCenter Plug-in Loader service (SPL) SnapCenter co-located SmCore service (SCC) Linux Plug-in host Description To ensure that third-party security devices/applications are not blocking the port 8145 between SC and Plug-in host, Linux native tools netstat and tcpdump can be used to test the communication.
    • How to check the amount of active connections on an E-Series management interface
      https://kb.netapp.com/on-prem/E-Series/Management-Apps-KBs/How_to_check_the_amount_of_active_connections_on_an_E-Series_management_interface
      Applies to E-Series storage systems EF-Series storage systems Description This article describes how to check the amount of active connections on an E-Series management interface
    • How to view network connections in ONTAP?
      https://kb.netapp.com/on-prem/ontap/da/NAS/NAS-KBs/How_to_view_network_connections_on_different_versions_of_ONTAP
      Applies to ONTAP 9 Description Below are some of the available options to view active connection and Listening ports from within ONTAP.
    • What are the netstat arguments and what do they mean?
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/What_are_the_netstat_arguments_and_what_do_they_mean
      The first count shows the number of unaccepted connections, the second count shows the amount of unaccepted incomplete connections, and the third count is the maximum number of queued connections. If ...The first count shows the number of unaccepted connections, the second count shows the amount of unaccepted incomplete connections, and the third count is the maximum number of queued connections. If -y is present, display the connections that met the extreme flow control condition The output displays the local and remote address of the connection, the count of the number of times the connection met the condition and the time.