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障害のあるスイッチ ポートが原因で Cisco クラスタ スイッチの ISL ポートがダウンしています

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ontap-9
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hw
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環境

  • ONTAP 9
  • Metrocluster IP
  • Cisco N9K-C9336C-FX2 クラスター スイッチ

問題

  • 両方のクラスタ スイッチのイベント ログに、次の ISL ダウン アラートが報告されます:

[Node-01: cshmd: hm.alert.raised:alert]: Alert Id = SwitchIslIfDownWarn_Alert , Alerting Resource = Cluster_sw1(FDOXXXXXXXX)/Ethernet1/36 raised by monitor ethernet-switch
[Node-01: cshmd: hm.alert.raised:alert]: Alert Id = SwitchIslIfDownWarn_Alert , Alerting Resource = Cluster_sw2(FDOXXXXXXXH)/Ethernet1/36 raised by monitor ethernet-switch

  • システム ヘルス アラートでは、以下の情報が報告されます:

::> system health alert show

        Node: Node-01
      Alert ID: SwitchIslIfDownWarn_Alert
      Resource: Ethernet1/36
      Severity: Major
   Indication Time: Tue Jan 14 05:29:26 2025
      Suppress: false
     Acknowledge: false
   Probable Cause: The cable attached to the ISL port
           "Cluster_sw1(FDOXXXXXXXX)/Ethernet1/36" with the
           description of "Intra-Cluster Switch ISL Port 1/36
           (port channel)" might be faulty. For the port-channel,
           please check each individual link.
   Possible Effect: Inter- or Intra- cluster redundancy might be lost.
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.

  • このため、スイッチの状態は低下します。
  • スイッチ ログに ISL ポートのステータスがダウンとして表示されます:

Cluster_sw1

`show interface brief`
--------------------------------------------------------------------------------
Ethernet        VLAN    Type Mode   Status  Reason                 Speed     Port
Interface                                                                    Ch #
--------------------------------------------------------------------------------
Eth1/36         1       eth  trunk down    Link not connected       auto(D) 1

Cluster_sw2

`show interface brief`
--------------------------------------------------------------------------------
Ethernet        VLAN    Type Mode   Status  Reason                 Speed     Port
Interface                                                                    Ch #
--------------------------------------------------------------------------------
Eth1/36         1       eth  trunk down    Link not connected       auto(D) 1

  • 場合によっては、トランシーバーがサポートされていないと報告されることがあります:

`show logging log`

SW1 %ETHPORT-3-IF_UNSUPPORTED_TRANSCEIVER: Transceiver on interface Ethernet1/35 is not supported
SW2 %ETHPORT-3-IF_UNSUPPORTED_TRANSCEIVER: Transceiver on interface Ethernet1/35 is not supported

  • ただし、使用されるケーブルは、Hardware Universeでサポートされています

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