Network interface aggregation requires a switch
Ethernet frame in LANs or multi-link PPP in WANs, Ethernet MAC address) aggregation typically occurs across switch ports, which can be either physical ports or virtual ones managed by an operating system. In computer networking, link aggregation is the combining (aggregating) of multiple network connections in parallel by any of several methods. The logical port provides increased resiliency, increased availability, and load sharing. Aggregating multiple links between physical interfaces creates a single logical point-to-point trunk link or a LAG. Conceptually, it works the same as EtherChannel in that several Ethernet adapters are aggregated into a single virtual adapter, providing greater bandwidth and protection against failures.
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