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Switches generally operate on L2 as multi-port bridges and may include features on other layers. A "WAN switch" is not a specific type of device, but a role label - a switch that you install into your WAN zone. It's not any different from other switches apart from specific requirements that might be present in that WAN zone. Those may include: ...


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I would say that nowadays this term is a bit vague. WAN is just a logical role you assign to a device. The backend technology is now 99% of the time Ethernet so in reality, WAN becomes just a logical block. Back in the days there were different backhaul technologies, xDSL, Frame Relay, ATM, etc. WAN switch was typically an ATM device (or at least this is ...


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