NoPathToNSMB_Alert reported on both nodes

Applies to

• ONTAP 9
• AFF/FAS Systems
• NS224 Disk Shelves

Issue

• From the event logs, it can be seen that NoPathToNSMB_Alert is reported on the node:

[Node-01: nchmd: hm.alert.raised:alert]: Alert Id = NoPathToNSMB_Alert , Alerting Resource = 6821354745569517568 raised by monitor node-connect

• The below alert can be seen from the SYSTEM-HEALTH-ALERT.XML section of autosupport from both the nodes:

Node: Node-01
Alert ID: NoPathToNSMB_Alert
Description: Controller Node-01 is connected only to module A of shelf 1.0 through port e3a.

Node: Node-02
Alert ID: NoPathToNSMB_Alert
Description:Controller Node-02 is connected only to module A of shelf 1.0 through port e3b.

• Both the nodes are configured as Multi-Path HA.

NetApp Release 9.12.1P5: Fri Jul 21 05:05:49 EDT 2023
System ID: 05XXXXXX84 (Node-01); partner ID: 05XXXXXX52 (Node-02)
System Serial Number: 79XXXX000004 (Node-01)
System Rev: B1
System Storage Configuration: Multi-Path HA

NetApp Release 9.12.1P5: Fri Jul 21 05:05:49 EDT 2023
System ID: 05XXXXXX52 (Node-02); partner ID: 05XXXXXX84 (Node-01)
System Serial Number: 79XXXX000009 (Node-02)
System Rev: B1
System Storage Configuration: Multi-Path HA

• From Environment logs, NSM B does not detect the Ethernet ports and node name. Ports 1 and 2 are attached to NSM A and Ports 3 and 4 are attached to NSM B:

[3] MAC address: d0:39:ea:aa:85:67  Attached MAC address: <N/A>
Attached port: <N/A>  Attached chassis: <N/A>    <-------------
Attached manufacturer: <N/A>     <-------------
Cable serial number: 93AXXXXX21103  Cable vendor name: Molex        <-------- e3a node Node-02
Cable id: QSFP28  Cable end: 0
Cable technology: passive copper  Cable length: 2m
[4] MAC address: d0:39:ea:aa:85:68  Attached MAC address: <N/A>
Attached port: <N/A>  Attached chassis: <N/A>      <-------------
Attached manufacturer: <N/A>          <-------------
Cable serial number: 93AXXXXX20118  Cable vendor name: Molex
Cable id: QSFP28  Cable end: 1
Cable technology: passive copper  Cable length: 2m                  <-------- e3b node Node-01

• The affected NSM module may not report the firmware version in sysconfig -a logs:

Shelf 2: NS224NSM100  Firmware rev. NSM100 A: 0231  NSM100 B: