Hi @asendia_stuart!
Please find some topology diagrams for the deployment of the MS acting as a WAN breakout switch below:
https://docs.google.com/presentation/d/1xsb8imtUFjN13so86kIZ04IR9f6WEKdbpUrYVON64Zg/edit#slide=id.ge...
As @Mloraditch mentioned, connecting the MS130 to the Internet can be achieved by connecting it to the LAN of the MX100 as outlined in slide 3. In this example, please ensure you are pruning VLAN 900 + 1000 from all other LAN links of the MX to avoid network loops.
I also want to mention that it's recommended to place the breakout switch(es) in their own dashboard network. This helps maintain correct network topology diagrams and client tracking in dashboard as well as provides more granular control for firmware upgrades.
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