Comprehensive and Detailed In-Depth
An HA pair in NIOS requires:
1. Virtual IP (VIP): Shared address for services (e.g., 192.168.1.100).
2. Active Node IP: Physical address (e.g., 192.168.1.101).
3. Passive Node IP: Physical address (e.g., 192.168.1.102).
Total: 3 IPs.
Options:
A: 2 IPs insufficient—misses individual node IPs. Incorrect.
B: 3 IPs match HA design (VIP + 2 nodes). Correct.
C/D: Extra IPs (e.g., MGMT) are optional, not required. Incorrect.
Practical Example: In an INE lab, configure VIP 10.0.0.1, active 10.0.0.2, passive 10.0.0.3, test failover,
and troubleshoot VRRP.
Reference: Infoblox NIOS Administrator Guide – HA Configuration; INE Course Content: NIOS DDI
Grid Deployment.
