D-Link DGS-3324SR Product Manual - Page 61

xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual Port Mirroring The Switch allows frames to be copied transmitted and received on a port and redirect the copies to another port. A monitoring device may be attached to the mirrored port, such as a sniffer or an RMON probe, to view details about the packets passing through the first port. This is useful for network monitoring and troubleshooting purposes. To view the Port Mirroring window, click Port Mirroring in the Configuration folder. Figure 6- 7. Port Mirroring window To configure a mirror port: • Select the Source Port from where to copy frames and the Target Port, which receives the copies from the source port. • Select the Source Direction, Ingress, Egress, or Both and change the Status drop-down menu to Enabled. • Click Apply to let the changes take effect. NOTE: A fast port cannot be mirrored onto a slower port. For example, if the user tries to mirror the traffic from a 100 Mbps port onto a 10 Mbps port, this can cause throughput problems. The port copying frames should always support an equal or lower speed than the port to which the copies are being sent. In addition, the target port for the mirroring cannot be a member of a trunk group. Please note a target port and a source port cannot be the same port. 46