Hi Ash,
Welcome to the Meraki Community! 😊
Site-to-site VPN settings are managed on the Security & SD-WAN > Configure > Site-to-site VPN page, and 3rd-party peers are located in the Organization-wide settings section. When configuring a peer, you can modify the IPsec policy settings by clicking the three dots on the right side. In the window that appears, a number of options are available.
The Preset selection allows easy setup of peers for some popular services, such as Azure and AWS. "Default" will reset the parameters to those used between Cisco Meraki peers, and "Custom" can be used for non-standard configurations, and this should enable you to replicate your existing VPN configuration.
Further details can be found here.
Some terminology may be a little different, eg Local ID of this MX. This is an optional configuration and is what the remote peer will receive as the remote ID of this MX, and is only available with IKEv2 tunnels. If left blank (default) it is the uplink IP of the MX, not the public IP. Some peers may expect this to match the public IP of the MX, and you can enter this here, if required.
If you run into any issues with your initial setup, please free to open a case from Support Center in your Meraki dashboard, and an NSE will be happy to assist!
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