Port Mirroring; The "Show" Commands; Show Monitor - Siemens SCALANCE XM-400 Configuration Manual

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12.4 Port Mirroring

Port Mirroring

It cannot be guaranteed when mirroring the data traffic that all packets are mirrored.

With the port mirroring function, you copy the data stream of one or more ports to another

interface to be able to analyze this data stream without disturbing operation.

Mirroring a port does not work beyond switch core boundaries.

You need to disable port mirroring if you want to connect a normal end device to the monitor

Note the data rate

If the maximum data rate of the mirrored port is higher than that of the monitor port, data

may be lost and the monitor port no longer reflects the data traffic at the mirrored port.

Several ports can be mirrored to one monitor port at the same time.

Several source ports from the same VLAN

If in a VLAN you select more than one source port for the port-based egress mirroring,

unknown unicast and multicast frames as well as broadcast frames are forwarded only once

to the destination port. With several sessions, the corresponding frames are only visible in

one session. They are only mirrored on the one destination port with the lowest hardware

This section describes commands with which you display various settings.

This command shows the status of the port mirroring function.

SCALANCE XM-400/XR-500 Command Line Interface (CLI)

Configuration Manual, 06/2016, C79000-G8976-C252-11