Since Layer 2 switching is performed at the Open Systems Interconnection data link layer,it is faster than routing or Layer 3 (network layer) switching,which must open IP packets to determine destinations.

• 由于第二层交换是在开放系统互连模型的数据链路层中进行的，所以它比路由或第3层（网络层）交换速度要快，因为该交换必须打开IP包来确定目的地。