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Frequent iSCSI Session Reconnects and DID_TRANSPORT_DISRUPTED Events in Linux Hosts

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Category:
ontap-9
Specialty:
san
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Applies to

  • NetApp ONTAP 9
  • Linux hosts (e.g., RHEL 9.6) using Open-iSCSI and DM-Multipath
  • iSCSI SAN environments with multiple NICs/interfaces in the same subnet

Issue

Linux hosts configured with multiple iSCSI NICs in the same subnet experience intermittent iSCSI session reconnects and transport disruptions, as observed by:

  • Repeated iSCSI session reconnections
  • Linux logs showing DID_TRANSPORT_DISRUPTED events

Example:

DID_TRANSPORT_DISRUPTED detected conn error (1020/1022) iSCSI Session Reconnect

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