Hello Everyone, It would be greatly appreciated if someone could explain the specific information exchanged during the ADVPN tunnel creation process—particularly in the following IKE messages:Shortcut OfferShortcut QueryShortcut ReplyShortcut NegotiationThese messages are part of FortiGate’s ADVPN (Auto Discovery VPN) mechanism, which enables dynamic spoke-to-spoke tunnels without manual configuration.

Visitor III

Question

Understanding ADVPN Tunnel Creation in FortiGate

Forum|Forum|7 months ago
October 12, 2025
2 replies
922 views

Hello Everyone,

It would be greatly appreciated if someone could explain the specific information exchanged during the ADVPN tunnel creation process—particularly in the following IKE messages:

Shortcut Offer
Shortcut Query
Shortcut Reply
Shortcut Negotiation

These messages are part of FortiGate’s ADVPN (Auto Discovery VPN) mechanism, which enables dynamic spoke-to-spoke tunnels without manual configuration.

FortiGate

funkylicious

SuperUser

hi,

have a read here

https://docs.fortinet.com/document/fortigate/7.0.17/administration-guide/985659/advpn-and-shortcut-paths

https://community.fortinet.com/t5/FortiGate/Technical-Tip-Fortinet-Auto-Discovery-VPN-ADVPN/ta-p/195698

"jack of all trades, master of none"

sk4Author

Visitor III

Thanks for sharing the document appreciate if you can share something where i can see all those details are available in these packets - i.e. offer message , query and reply in ADVPN negotiation.

funkylicious

SuperUser

I think you can find more information about these specific messages in the SD-WAN and/or NSE7 Enterprise Firewall training materials

"jack of all trades, master of none"

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