译文：
大致意思是将某些端口的数据发送到指定的端口。
原文如下
12.5.2.2
Mirror Port Configuration
Port mirroring is the duplication of traffic from a set of source ports onto a destination port. A mirror
session associates a set of source ports to a destination port.
? The monitor session source command configures an Ethernet or port channel interface as the
source port of a specified port mirroring session.
? The monitor session destination command configures an Ethernet interface as the destination port
of a specified port mirroring session.
Example
? These commands configure Ethernet interface 8 as the source port and Ethernet interface 7 asarista 交换机镜像端口配置（将某一端口的数据转发到指定端口）
原文地址：http://blog.csdn.net/svap1/article/details/39300101
