Skip to main content
NetApp Knowledge Base

SwitchIslIfDownWarn_Alert  reported during switch NX-OS and RCF upgrade

  1. Last updated
  2. Save as PDF
Views:
12
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
hw
Last Updated:

Applies to

  • ONTAP 9
  • CISCO - Cluster Network Switches

Issue

  • During the NX-OS upgrade, the ISL port went down and ONTAP reported SwitchIslIfDownWarn_Alert .

Node::*> system health alert show -instance

                      Node: Node-02
                   Monitor: ethernet-switch
              Process Name: cshm
                  Alert ID: SwitchIslIfDownWarn_Alert
         Alerting Resource: Switch01(FOCXXXXXXX)/port-channel1
        ID Of the Resource: AHM_FS.0
                 Subsystem: Switch-Health
           Indication Time: Thu Jul 31 04:02:43 2025
        Perceived Severity: Major
            Probable Cause: Cable_tamper
               Description: The cable attached to the ISL port "Switch01(FOCXXXXXXX)/port-channel1" with the description of "LOCAL_ISL Switch" might be faulty. For the port-channel, please check each individual link.
        Corrective Actions: 1) Check whether the cable is fully inserted into the interface port on both ends.
2) Reconnect the ISL port using another cable. After reconnecting it, verify whether the link of the ISL port is up by executing the commands per the switch configuration guide or by checking whether the Link status LED is on.

  • From the "show tech-support" logs, the ISL ports (1/31 && 1/32) seen to be going down.

2025 Jul 28 19:49:00 Switch01 %ETHPORT-5-IF_DOWN_NONE: Interface Ethernet1/31 is down (Transceiver Absent)
2025 Jul 28 19:49:02 Switch01 %ETHPORT-5-IF_HARDWARE: Interface Ethernet1/31, hardware type changed to 40G
2025 Jul 28 19:49:09 Switch01 %ETHPORT-5-SPEED: Interface Ethernet1/31, operational speed changed to 40 Gbps
2025 Jul 28 19:49:09 Switch01 %ETHPORT-5-IF_DUPLEX: Interface Ethernet1/31, operational duplex mode changed to Full
2025 Jul 28 19:49:09 Switch01 %ETHPORT-5-IF_RX_FLOW_CONTROL: Interface Ethernet1/31, operational Receive Flow Control state changed to off
2025 Jul 28 19:49:09 Switch01 %ETHPORT-5-IF_TX_FLOW_CONTROL: Interface Ethernet1/31, operational Transmit Flow Control state changed to off

2025 Jul 28 19:49:00 Switch01 %ETHPORT-5-IF_DOWN_NONE: Interface Ethernet1/32 is down (Transceiver Absent)
2025 Jul 28 19:49:02 Switch01 %ETHPORT-5-IF_HARDWARE: Interface Ethernet1/32, hardware type changed to 40G
2025 Jul 28 19:49:09 Switch01 %ETHPORT-5-SPEED: Interface Ethernet1/32, operational speed changed to 40 Gbps
2025 Jul 28 19:49:09 Switch01 %ETHPORT-5-IF_DUPLEX: Interface Ethernet1/32, operational duplex mode changed to Full
2025 Jul 28 19:49:09 Switch01 %ETHPORT-5-IF_RX_FLOW_CONTROL: Interface Ethernet1/32, operational Receive Flow Control state changed to off
2025 Jul 28 19:49:09 Switch01 %ETHPORT-5-IF_TX_FLOW_CONTROL: Interface Ethernet1/32, operational Transmit Flow Control state changed to off

 

Sign in to view the entire content of this KB article.

New to NetApp?

Learn more about our award-winning Support

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.