Operation Manual – Port MirroringH3C S7500E Series Ethernet Switches Chapter 1 Port Mirroring Configuration1-1Chapter 1 Port Mirroring ConfigurationWhen configuring port mirroring, go to these sections for information you are interestedin:z Introduction to Port Mirroringz Configuring Local Port Mirroringz Configuring Remote Port Mirroringz Displaying and Maintaining Port Mirroringz Port Mirroring Configuration Examples1.1 Introduction to Port MirroringPort mirroring allows you to duplicate the packets passing specified ports to thedestination mirroring port. As destination mirroring ports usually have data monitoringdevices connected to them, you can analyze the packets duplicated to the destinationmirroring port on these devices so as to monitor and troubleshoot the network.Figure 1-1 A port mirroring implementation1.1.1 Classification of Port MirroringThere are two kinds of port mirroring: local port mirroring and remote port mirroring.z Local port mirroring copies packets passing through one or more ports (known assource ports) of a device to the monitor port (also destination port) for analysis andmonitoring purpose. In this case, the source ports and the destination port arelocated on the same device.z Remote port mirroring implements port mirroring between multiple devices. That is,the source ports and the destination port can be located on different devices in anetwork. Currently, remote port mirroring can only be implemented on Layer 2.
