When a communication path changes, nearby routers inform their neighbours through a system known as the border gateway protocol (BGP).
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FCC(美国联邦通信委员会)规定一些设备上,如地面移动无线电,频谱遮罩或邻近信道功率比的需求。
The FCC (Federal Communications Commission) sets spectral masks or adjacent-channel-power-ratio requirements on some services, such as land mobile radio.
"By communicating with your neighbors, information can propagate multiple hops, " explains Smith, "So you can actually end up building a reasonably long-horizon plan in a distributed way.