Refer to the exhibit. Which type of VPN implementation is displayed?

Question

Exhibit

Options

• AIKEv1 cluster
• BIKEv2 backup gateway
• CIKEv2 load balancer
• DIKEv2 reconnect

• A
  3% (1)
• C
  95% (36)
• D
  3% (1)

Explanation

The exhibit (not shown here) depicts a Cisco ASA VPN Load Balancing configuration, which is why answer C (IKEv2 load balancer) is correct.

Cisco ASA VPN Load Balancing works as follows:

• Multiple ASA appliances are configured as members of a virtual VPN cluster.
• A shared virtual IP address (cluster IP) is configured on all members. VPN clients initially connect to this virtual IP.
• The master ASA intercepts the connection, determines which cluster member currently has the fewest active VPN sessions, and redirects the client to that member's real IP address.
• This distributes VPN session load across all ASA members, preventing any single unit from becoming a bottleneck.
• The configuration includes the 'vpn load-balancing' command block with a 'cluster ip address' and optional cluster encryption settings.

Why the other options are wrong:

• A (IKEv1 cluster): IKEv1 does not have a native cluster/load-balancing model equivalent to IKEv2's on ASA; the exhibit would show IKEv2-specific parameters.
• B (IKEv2 backup gateway): A backup gateway is a failover mechanism that specifies an alternate peer address to try if the primary is unreachable-not a load-distribution cluster.
• D (IKEv2 reconnect): The IKEv2 reconnect feature (also called IKEv2 mobility and multihoming) allows an established VPN session to survive an IP address change or brief connectivity loss-it is not related to distributing sessions across multiple ASAs.

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