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スイッチのアップグレードまたはリブート後に、ポートがSuspended(LACP PDUなし)と表示されます

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環境

  • MetroCluster IP
  • ONTAP 9
  • N3K-C3232C MetroClusterスイッチ
  • クラスタネットワークがデグレード状態です
  • MetroCluster以外も影響を受ける可能性がある。

問題

  • 1つ以上のMetroClusterスイッチをリブートすると、ポートチャネルの一部のインターフェイスが一時停止状態になる

例:

`show interface brief`
...
--------------------------------------------------------------------------------
Ethernet     VLAN   Type Mode   Status  Reason          Speed    Port
Interface                                   Ch #
--------------------------------------------------------------------------------
...
Eth1/15      1     eth  trunk  down   suspended(no LACP PDUs) 100G(D) 10
Eth1/16      1     eth  trunk  down   suspended(no LACP PDUs)  100G(D) 10

  • 複数のスイッチをリブートしてこのエラーが発生すると、クラスタネットワークのデグレードが発生することがあります。

例:

Thu Dec 02 12:12:29 +0100 [NodeA-01: vifmgr: callhome.clus.net.degraded:alert]: Call home for CLUSTER NETWORK DEGRADED: Large MTU Packet Loss - Ping failures detected between NodeA-01_cluster2 ( 1.2.3.4 ) on PCMSTG201 and NodeA-02_cluster1 ( 1.2.3.4 ) on NodeA-02

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