NSE4_FGT-7.0 · Question #110
In a high availability (HA) cluster operating in active-active mode, which of the following correctly describes the path taken by the SYN packet of an HTTP session that is offloaded to a secondary…
The correct answer is D. Client> primary FortiGate> secondary FortiGate> web server. In an active-active FortiGate HA cluster, the primary FortiGate receives initial client requests and, when offloading a session, redirects the SYN packet to a secondary FortiGate, which then processes and forwards it directly to the web server.
Question
In a high availability (HA) cluster operating in active-active mode, which of the following correctly describes the path taken by the SYN packet of an HTTP session that is offloaded to a secondary FortiGate?
Options
- AClient > primary FortiGate> secondary FortiGate> primary FortiGate> web server.
- BClient > secondary FortiGate> web server.
- CClient >secondary FortiGate> primary FortiGate> web server.
- DClient> primary FortiGate> secondary FortiGate> web server.
How the community answered
(24 responses)- B4% (1)
- C8% (2)
- D88% (21)
Why each option
In an active-active FortiGate HA cluster, the primary FortiGate receives initial client requests and, when offloading a session, redirects the SYN packet to a secondary FortiGate, which then processes and forwards it directly to the web server.
The traffic does not return to the primary FortiGate after being offloaded to the secondary for processing and then go to the web server; the secondary FortiGate handles the traffic directly once offloaded.
In an active-active HA setup, the client typically sends the initial SYN packet to the primary FortiGate's virtual IP, not directly to a secondary FortiGate.
After offloading, the secondary FortiGate processes the session and sends traffic directly to the web server; it does not send it back to the primary FortiGate first.
In an active-active HA cluster, the primary FortiGate receives all initial connections, and if a session is offloaded, the primary unit redirects the SYN packet to a secondary FortiGate which then processes the session and forwards it directly to the web server. This ensures session load distribution while maintaining a single point of entry for clients.
Concept tested: FortiGate Active-Active HA session offloading
Source: https://docs.fortinet.com/document/fortigate/7.4.0/fortios-handbook/314115/active-active-ha-load-balancing
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