Hello Jereon As Kannan explained previously, WAN clustering is not supported irrespective of the ports configured. Yes, bandwidth and latency has to be LAN like performance. However, to answer your question on MPLS network: In my experience, I have seen customers successfully establishing clustering over dedicated leased line and also over MPLS network. It might work wihtout issues! But if you encounter any problem, then official statement from Juniper would be it is an unsupported scenario, as this kinda setup is neither tested nor recommended by Juniper. Hope this clarifies! Regards, Raveen
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