Nutanix uses IPv4 multicast for automatic node discovery and cluster expansion.
Option D (IPv4 multicast must be allowed) is correct:
When adding new nodes,the Nutanix Cluster automatically detects themusingIPv4 multicast traffic.
If multicast isblocked at the switch level, the new nodeswill not be discoveredautomatically.
Option A (Hypervisor version must match) is incorrect:
While thehypervisor version should be compatible, itdoes not impact node discovery.
Option B (IPv6 multicast) is incorrect:
Nutanixdoes not use IPv6 multicast for cluster discovery.
Option C (AOS version must match) is incorrect:
Nodes can haveslightly different AOS versions, butdiscovery still works as long as they are compatible.
References:
Nutanix Best Practices →Cluster Expansion & Auto-Discovery
Nutanix KB →Why Nutanix Requires IPv4 Multicast for Node Discovery
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