When expanding a cluster, what is required to automatically discover new nodes?

Question

Options

• ANew nodes must have the same hypervisor version.
• BIPv6 multicast must be allowed on physical switches.
• CNew nodes must have the same AOS version.
• DIPv4 multicast must be allowed on physical switches.

• A
  3% (1)
• B
  7% (2)
• C
  3% (1)
• D
  86% (25)

Explanation

Nutanix uses IPv4 multicast during the Foundation and cluster expansion process for auto-discovery of new, unconfigured nodes on the network. The Foundation tool broadcasts multicast discovery packets, and new nodes listen and respond to these packets to announce their presence. If multicast traffic is blocked on the physical switches (e.g., by IGMP snooping misconfigurations or ACLs), the discovery process will fail and nodes must be added manually by IP address.

Why the other options are wrong:

• A (Same hypervisor version): While version compatibility is important for cluster health, it is not a requirement for the node discovery mechanism itself.
• B (IPv6 multicast): Nutanix auto-discovery uses IPv4 multicast, not IPv6.
• C (Same AOS version): New nodes are typically imaged during Foundation to match the cluster version; this is a post-discovery step, not a requirement for discovery.

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