A network administrator is configuring a load balancer for two systems. Which of the following must the administrator configure to ensure connectivity during a failover?
- Virtual IP (VIP): A virtual IP address should be configured on the load balancer, which is the IP address that clients use to access the load-balanced systems.
Virtual IP Address (VIP or VIPA) = An IP address that does not correlate to an actual physical network interface used for NAT, fault-tolerance & virtualization. In your computer you have a NIC, normally you can only configure the NIC with a single IP address due to one physical network interface (the NIC). A VIPA will let you configure that NIC to respond to numerous IP addresses & all resolve back to physical network interface to establish network activity. Routers will often use VIPAs to provide redundancy in connectivity options by having a single VIPA assigned to the default gateway, this will allow multiple routers that can answer on behalf of the VIPA, allowing a primary device to use during normal conditions & alternate devices that can be used when primary device fails.
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