
Important OSM/ESM Functions
2-9
Industrial Ethernet OSM/ESM Network Management
C79000-G8976-C137-08
2.7 Mirroring
Mirroring for Diagnostics
Mirroring allows you to mirror (copy) the bi-directional data traffic to an OSM/ESM
port (mirrored port) to another OSM/ESM port (monitor port) and to record it with a
protocol analyzer for diagnostic purposes.
Settings
You can set the mirrored and monitor port and activate the mirror function both with
the command-line interface or using WBM. Ports 1 to 6 of the OSM/ESM can be
used as the monitor port.
With the OSM TP22 and ESM TP40 variants, only ports 1 and 2 are permitted as
the monitor ports.
Mirroring Active
If the mirroring function is activated and if the monitor port has a valid connection
to the attached protocol analyzer, the port LED of the monitor port on the
OSM/ESM flashes quickly (4 x short with pause).
Note
Please remember to turn off the mirroring function if you connect a normal DTE to
the monitor port.
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