在二层交换机的性能参数中，常常提到一个重要的指标：TRUNK，许多的二层交换机产品在介绍其性能时，都会提到能够支持TRUNK功能，从而可以为互连的交换机之间提供更好的传输性能。那到底什么是TRUNK呢？使用TRUNK功能到底能给我们带来哪些应用方面的优势？还有在具体的交换机产品中怎-switch on the second floor of the performance parameters, are often mentioned an important indicator : TRUNK, many of the two-story switches in the introduction to his performance, he will be able to support TRUNK mentioned functions, for the interconnection between switches provide better transmission performance. That in the end is what TRUNK? TRUNK functional use in the end will give us what the advantages of the application? There are switches in specific products How