FCSS_EFW_AD-7.4 · Question #46
Refer to the exhibit, which shows an ADVPN network. The client behind Spoke-1 generates traffic to the device located behind Spoke-2. What is the first message that the hub sends to Spoke-1 to bring…
The correct answer is B. Shortcut offer. In an ADVPN (Auto-Discovery VPN) network, a dynamic VPN tunnel is established on-demand between spokes to optimize traffic flow and reduce latency. 1. Traffic Initiation: A client behind Spoke-1 sends traffic to a device behind Spoke-2. The traffic initially flows through the…
Question
Refer to the exhibit, which shows an ADVPN network. The client behind Spoke-1 generates traffic to the device located behind Spoke-2. What is the first message that the hub sends to Spoke-1 to bring up the dynamic tunnel?
Exhibit
Options
- AShortcut query
- BShortcut offer
- CShortcut reply
- DShortcut forward
How the community answered
(29 responses)- A10% (3)
- B83% (24)
- C3% (1)
- D3% (1)
Explanation
In an ADVPN (Auto-Discovery VPN) network, a dynamic VPN tunnel is established on-demand between spokes to optimize traffic flow and reduce latency. 1. Traffic Initiation: A client behind Spoke-1 sends traffic to a device behind Spoke-2. The traffic initially flows through the hub, following the pre-established overlay tunnel. 2. Hub Detection: The hub detects that Spoke-1 is communicating with Spoke-2 and determines that a direct shortcut tunnel between the spokes can optimize the connection. 3. Shortcut Offer: The hub sends a "Shortcut Offer" message to Spoke-1, informing it that a direct dynamic tunnel to Spoke-2 is possible. 4. Tunnel Establishment: Spoke-1 and Spoke-2 then negotiate and establish a direct IPsec tunnel for communication.
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