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スイッチのリブート後、Cluster network degradedアラートが表示されるSwitchIfIfIslDownWarn_Alert

環境

  • ONTAP 9
  • CN1610クラスタスイッチ
  • BES-53248クラスタスイッチ

問題

  • 停電またはメンテナンス後にスイッチがリブートされた。
  •  CLUSTER NETWORK DEGRADED イベントログに次のアラートが報告されます。

[Node-01: vifmgr: callhome.clus.net.degraded:alert]: Call home for CLUSTER NETWORK DEGRADED: Total Packet Loss - Ping failures detected between Node-01_clus2 ( 169.XXX.XX.XXX ) on Node-01 and Node-04_clus1 ( 169.XXX.XX.XXX ) on Node-04

  • ISL LAG(リンクアグリゲート)を使用している場合は、次のASUP アラートが表示されることがあります。(Health Monitor process cshm: SwitchIfIslDownWarn_Alert[<switch_name>/<LAG_name>]) ALERT
  • イベントログ:

[Node-04: cshmd: hm.alert.raised:alert]: Alert Id = SwitchIfIslDownWarn_Alert , Alerting Resource = cluster-sw1/ Link Aggregate 1 raised by monitor cluster-switch

  • スイッチのヘルスがデグレード状態になっています。

eu10380sc1::> system health subsystem show
Subsystem      Health
----------------- ------------------
SAS-connect     ok
Environment     ok
Memory          ok
Service-Processor ok
Switch-Health    degraded
CIFS-NDO      ok
Motherboard     ok

  • スイッチ show tech-support がISLポートの無効と停止を報告します。

Switch# show port all

         Admin    Physical   Physical   Link   Link   LACP   Actor
Intf    Type   Mode    Mode     Status    Status Trap   Mode   Timeout
--------- ------ --------- ---------- ---------- ------ ------- ------ --------
0/13      PC Mbr Disable   10G Full              Down   Enable  Enable long
0/14      PC Mbr Disable   10G Full              Down   Enable  Enable long
0/15      PC Mbr Disable   10G Full              Down   Enable  Enable long
0/16      PC Mbr Disable   10G Full              Down   Enable  Enable long
  • show running-config スイッチの出力で、 すべてのISLポートがシャットダウンされていることがわかります。

    interface 0/13
    shutdown
    description 'ISL member port 13'
    mtu 9216
    exit
    interface 0/14
    shutdown
    description 'ISL member port 14'
    mtu 9216
    exit
    interface 0/15
    shutdown
    description 'ISL member port 15'
    mtu 9216
    exit
    interface 0/16
    shutdown
    description 'ISL member port 16'
    mtu 9216
    exit

 

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