These basic switches conform to the Open Systems Interconnection layer 2 protocol and operate as fast bridges, meaning they are transparent to network layer protocols. 這些基本的交換機符合開(kāi)放系統互連模型第二層協(xié)議,并作為快速網(wǎng)橋工作,這意味著(zhù)它們對網(wǎng)絡(luò )層協(xié)議是透明的。