The age-old networking debate keeps resurfacing as network managers assess the speed,simplicity and lower cost of Layer 2 switching (bridging) against the greater network control afforded by routing technology.

• 当网络经理们就第2层交换（即桥接）的速度、简洁性和低成本对照路由技术提供的更大的网络控制进行评价时，这个争了多年的联网问题又再次浮出水面。