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One or more nodes are not connected to both cluster switches

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2
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Category:
metrocluster
Specialty:
MetroCluster
Last Updated:

Applies to

  • MetroCluster
  • Cisco Nexus 
  • Cluster-Switch  

Issue

  • In a MetroCluster IP configuration using BES-53248 switches the following HM alert may come up even all connections to the Switch are online :

    Cluster-A::*> system health alert show
    Node: Node-A1
    Resource: Node-A1
    Severity: Major
    Indication Time: Mon May 10 17:59:20 2021
    Suppress: false
    Acknowledge: false
    Probable Cause: One or more nodes are not connected to both cluster switches.
    Possible Effect: If one cluster switch fails, "Node-A1" might lose
    access to the cluster.
    Corrective Actions: Verify that the switch "Switch_A1" is connected to the node "Node-A1".

  • One switch is missing from device-discovery output :  

    nac11::*> network cdp device-discovery show 
    Node/       Local  Discovered
    Protocol    Port   Device (LLDP: ChassisID)  Interface         Platform
    ----------- ------ ------------------------- ----------------  ----------------
    Node-01    /cdp
                e0a    nac11cs-ccgi-p01(FOC12345HD)
                                                 Ethernet1/2       N3K-C3232C
                e0b    nac11cs-ccgi-p01(FOC12345HD)                               
                                                 Ethernet1/10      N3K-C3232C      
    ~
    node-02   /cdp
                e0a    nac11cs-ccgi-p01(FOC12345HD)
                                                 Ethernet1/1       N3K-C3232C
                e0b    nac11cs-ccgi-p01(FOC12345HD)
                                                 Ethernet1/9 
                                                                   N3K-C3232C

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Case Citation
0b61782c-5ab6-4286-a9be-e9247b8f4907