IP forwarding works in layer 3, using the address of each input packet to decide how to forward it; that is to say, forwarding is based on IP addresses.
IP转发工作在第三层，利用每个输入包的地址来决定如何转发包，转发的依据是IP地址。
Like TRILL, shortest path bridging is designed to address this problem by applying the Layer 3 routing protocol to Layer 2 devices.
像颤音，最短路径连接的目的是解决这个问题通过应用第三层路由协议第2层设备。
Like TRILL, shortest path bridging is designed to address this problem by applying the Layer 3 routing protocol to Layer 2 devices.
像颤音，最短路径连接的目的是解决这个问题通过应用第三层路由协议第2层设备。
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