* RFC1918 Address Space (A)
* VMwarerecommends using private IPv4 address rangesfromRFC1918. This ensures internal network segmentation without public exposure.
* Allocatingone octet for region and another for functionhelps with structured IP management.
* Subnet Sizing (D)
* Using /24 subnetsis preferred inNSX-T designbecause:
* Itsimplifies managementby offering256 usable IP addresses per subnet.
* It preventsoverlapping IP issuesand ensuresbetter compatibility with firewalls and routers.
* Floating Interface for VRRP/HSRP (E)
* NSX-T supportsredundant gatewaysusingVRRP (Virtual Router Redundancy Protocol)or HSRP (Hot Standby Routing Protocol).
* Thefloating IPacts as aredundant gateway, ensuringseamless failoverinmulti-gateway environments.
* Incorrect Options:
* (B - IPv6 RFC2460)# NSX primarily usesIPv4for most enterprise deployments. IPv6 support is limited and requires additional configuration.
* (C - /16 Subnets)# Using/16 subnetsis impractical for micro-segmentation as it createslarger broadcast domainsand increasesnetwork overhead.
VMware NSX 4.x Reference:
* VMware NSX-T Data Center Design Guide
* NSX-T Best Practices for VLAN and Subnet Design