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Question
Why do I get an error when configuring port mirroring across certain ports on an MCSESM203F4LG0 switch, and how can I enable mirroring?
Why do I get an error when configuring port mirroring across certain ports on an MCSESM203F4LG0 switch, and how can I enable mirroring?
Answer:
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Issue
Configuring port mirroring on MCSESM203F4LG0 fails with error message: "TX mirroring across unit boundaries is not supported" -
Product Line
- Hardware: MCSESM203F4LG0
- Software Version (SV): 8.7.10
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Resolution
Port mirroring on this model is limited to a single switching chip. Mirroring across the two internal chips is not supported—this is a hardware limitation.
The MCSESM203F4LG0 has two internal switching chips:
- Chip 1: Ports 1/1 to 1/12
- Chip 2: Ports 1/13 to 1/20
To resolve:
- Ensure that the mirror destination (primary/monitor port) and all mirror source ports (TX/RX) are on the same chip.
- Example: Choose the monitor port from 1/1–1/12 and only select mirror sources within 1/1–1/12; do not include ports from the other chip.
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FAQ Applicable Conditions
- This FAQ remains valid unless a new hardware revision explicitly adds cross-chip mirror support.
Released for: Schneider Electric Vietnam
