Port Mirroring

The MACH4002 24/48 + 4G and the Power MICE support up to 8 ports.

The port mirroring function enables you to review the data traffic from a group of ports on the device for diagnostic purposes (N:1). The device forwards (mirrors) the data for these ports to another port. This process is port mirroring. The ports from which the device copies the traffic are source ports. The port on which you review the data is the destination port. You use physical ports as source or destination ports.

In port mirroring, the device copies valid data packets of the source port to the destination port. The device does not affect the data traffic on the source ports during port mirroring.
A management tool connected at the destination port, e.g. an RMON probe, can thus monitor the data traffic of the source ports in the sending and receiving directions.

Selecting “RX” as the monitoring direction on a source port determines the destination port mirror (copy from the selected source interface) only frames received on the source interface (monitoring ingress).

Selecting “TX” as the monitoring direction on a source port determines the destination port mirror (copy from the selected source interface) only frames sent from the source interface (monitoring egress).

With port mirroring active, the device copies the traffic received and/or forwarded on a source port to the destination port.

The PowerMICE and MACH4000 devices use the destination port for the port mirroring task exclusively. The source port forwards and receives traffic as normal.

Buttons

Button

Meaning

“Set”

Transfers the changes to the volatile memory (RAM) of the device. To permanently save the changes afterwards, you open the Basic Settings:Load/Save dialog and click “Save”.

“Reload”

Updates the fields with the values that are saved in the volatile memory (RAM) of the device.

“Reset Config”

Resets the settings in the dialog to the default settings.

“Help”

Opens the online help.

Tab. Buttons