不论网络的规模如何,对于每位网络管理者而言,性能是极其关键的问题。有些技术如以太网交换,能以非常快的速度发送数据包;又如快速以太网的出现,将以太网的速度提高了10倍,都是设法要应付这方面的需求。但是这些都不是长远之计,因为所有公司的业务运作日益依赖于信息网络,而且其应用软件也越来越复杂而趋于一体化。 网络层交换,就是OSI通信模式中的第三层交换,非常像第二层交换的自然延续和 Regardless of the size of the network, performance is an extremely critical issue for every network manager. Some technologies, such as Ethernet switching, can send packets at a very fast rate; another example is the advent of Fast Ethernet, which increases the speed of Ethernet by a factor of 10 and tries to cope with this. But these are not the long term, as the business operations of all companies are increasingly dependent on information networks and their applications become more complex and tend to be integrated. Network layer switching is the third layer of the OSI communication mode exchange, much like the natural continuation of the second layer of exchange and