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A hub (or L2 switch) performs data bridging/switching/forwarding at the OSI Layer 2 level for data destined to another address on the same subnet.

For data to be forwarded to another subnet, that data must be routed at the OSI Layer 3 level which is performed by a Router (or L3 Switch).

Routers collect various information about other networks it can forward traffic to and from, what routing protocols are used and which path(s) to forward that data to.

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