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スイッチ管理インターフェイスの削除後にSNMP設定が自動的に変更される

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Category:
fabric-interconnect-and-management-switches
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hw
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環境

  • Cisco N9K-C9336C-FX2
  • Cisco NX-OS 10.4(5)
  • AFF A400
  • ONTAP 9.18.1P1

問題

スイッチの管理ケーブルを一時的に切断した後、ノード上のスイッチのSNMP設定が異なって見える
  • SNMPコミュニティ文字列が不明な値で変更されています
  • SNMPのバージョンがSNMPv3からSNMPv2cに変更されました
変更された値は、変更されていないスイッチの値と比較して観察することができます。例:
aff::> system switch ethernet show -device ciscosw-3.sub.domain.com(FLMAABBCCHY)
Device Name: ciscosw-3.sub.domain.com(FLMAABBCCHY)
IP Address: xxx.xxx.xxx.xxx
SNMP Version: SNMPv3
Is Discovered: true
Community String or SNMPv3 Username: operaator_cisco
Model Number: N9K-C9336C-FX2
Switch Network: storage-network
Software Version: Cisco Nexus Operating System (NX-OS) Software, Version 10.4(5)
Reason For Not Monitoring: None
Source Of Switch Version: CDP/ISDP
Is Monitored ?: true
Serial Number of the Device: FLMAABBCCHY
  
aff::> system switch ethernet show -device ciscosw-4.sub.domain.com(FLMDDEEFFQR)
Device Name: ciscosw-4.sub.domain.com(FLMDDEEFFQR)
IP Address: xxx.xxx.xxx.xxx
                  SNMP Version: SNMPv2c
Is Discovered: true
Community String or SNMPv3 Username: cshm1!
Model Number: N9K-C9336C-FX2
Switch Network: storage-network
Software Version: Cisco Nexus Operating System (NX-OS) Software, Version 10.4(5)
           Reason For Not Monitoring: Invalid SNMP settings
Source Of Switch Version: CDP/ISDP
Is Monitored ?: false
          Serial Number of the Device: Unknown
  
  
aff::> system switch ethernet show -device * -status
Monitoring
Switch     Status    Reason
------------- ------------ ------------
ciscosw-3.sub.domain.com(FLMAABBCCHY)
true     None
ciscosw-4.sub.domain.com(FLMDDEEFFQR)
        false     Invalid SNMP settings
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