Cochrane says, however, that 21CN is being built on a standard (known as multiprotocol label switching) that essentially routes packets according to labels incorporated into their headers.

• 然而科克兰表示，21CN使用多重协定标签交换（multiprotocollabelswitching）的标准，基本上是依据封包标头中注明的标签来决定传送路径。