Port Mirroring - D-Link dxs-3350sr Installation & User Manual

Port Mirroring

The Switch allows you to copy frames transmitted and received on a port and redirect the copies to another port. You can
attach a monitoring device 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.
To configure a mirror port:
1. Select the Unit in the stack you want to configure.
2. Select the Source Port from where you want to copy frames and the Target Port, which receives the copies from
the source port.
3. Select the Source Direction, Ingress, Egress, or Both and change the Status drop-down menu to Enabled.
4. Click Apply to let the changes take effect.
DXS-3350SR Gigabit Layer 3 Switch
Figure 6- 7. Setup Port Mirroring window
NOTE: You cannot mirror a fast port onto a slower port. For example, if you try to
mirror the traffic from a 100 Mbps port onto a 10 Mbps port, this can cause
throughput problems. The port you are copying frames from should always support
an equal or lower speed than the port to which you are sending the copies. Also,
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.
51