We've run into problems when using LX/LH or SX optics on the WAN port of an MX right out of the box. It's always required a firmware upgrade before the WAN port will work with those optics. Same goes for using some 1G optics on the SFP+ ports.
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Hey @Kamome , under traffic shaping -> SD-WAN policies you can set "Custom performance classes" and you can apply them to your VPN Traffic and set it to a WAN Interface Hope that helps. Greets
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From your description it sounds like this: Core -> Sw 1 -> Mx -> Sw2 -> APs In which case it seems that the topology would be accurate if it shows the left leg as having the Switch closer to the Mx and the Core farther away.
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