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201 · Question #89

What is the purpose of floating selfIP addresses?

The correct answer is C. to define an address that allows network devices to route traffic via a single IP address. Floating self-IP addresses provide a single, shared IP address that network devices can use to route traffic to an active BIG-IP system in a high-availability pair, ensuring continuous service delivery.

Section 6: Configure High Availability

Question

What is the purpose of floating selfIP addresses?

Options

  • Ato define an address that grants administrative access to either system at any time
  • Bto define an address that allows either system to initiate communication at any time
  • Cto define an address that allows network devices to route traffic via a single IP address
  • Dto define an address that gives network devices greater flexibility in choosing a path to forward traffic

How the community answered

(43 responses)
  • A
    2% (1)
  • B
    2% (1)
  • C
    88% (38)
  • D
    7% (3)

Why each option

Floating self-IP addresses provide a single, shared IP address that network devices can use to route traffic to an active BIG-IP system in a high-availability pair, ensuring continuous service delivery.

Ato define an address that grants administrative access to either system at any time

While administrative access can be configured via self-IPs, the primary purpose of *floating* self-IPs is for routing client traffic in an HA setup, not exclusively administrative access.

Bto define an address that allows either system to initiate communication at any time

Floating self-IPs are primarily for receiving incoming connections that are routed via that shared IP, not for initiating outbound communication from either system at any time.

Cto define an address that allows network devices to route traffic via a single IP addressCorrect

Floating self-IP addresses are configured on a BIG-IP high-availability (HA) pair and are associated with a traffic group. Only the active device in the traffic group owns and responds to the floating IP, allowing network devices to route traffic to a consistent address without needing to know which specific BIG-IP unit is currently active.

Dto define an address that gives network devices greater flexibility in choosing a path to forward traffic

Floating self-IPs provide a consistent destination, not greater flexibility in path choice; network devices route to the single, active floating IP.

Concept tested: F5 BIG-IP Floating Self-IPs and HA

Source: https://techdocs.f5.com/en-us/bigip-16-1-0/big-ip-system-high-availability-and-load-balancing-configuration/configuring-self-ips-for-high-availability.html

Topics

#Floating Self-IP#High Availability#Redundancy#Routing

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