Some situations might require that traffic is prevented from being forwarded between any ports at Layer 2 so that one user cannot see the traffic of another user on the same switch. Protected ports can:
- Prevent traffic from being forwarded between protected ports.
- Allow traffic to be forwarded between a protected port and a non-protected port.
In following figure, PC 1 and PC 2 can access the Internet as usual, but PC 1 cannot see the traffic that is generated by PC 2, that is, no traffic is forwarded between PC 1 and PC 2.
For more information, see the following support articles:
- How do I configure a protected port to isolate ports using CLI commands on my managed switch?
- How do I configure a protected port to isolate ports using the web interface on my managed switch?
This article applies to the following managed switches and their respective firmware:
- M5300 - firmware version 10.0.0.x
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- M5300-28G (GSM7228S)
- M5300-5G (GSM7252S)
- M5300-28G3 (GSM7328Sv2h2)
- M5300-52G3 (GSM7352Sv2h2)
- M5300-28G_POE+ (GSM7228PSv1h2)
- M5300-52G-POE+ (GSM7252PSv1h2)
- M5300-28GF3 (GSM7328FSv2)
- M4100 - firmware version 10.0.1.x
-
- M4100-26G (GSM7224v2h2)
- M4100-50G (GSM7248v2h2)
- M4100-26G-POE (GSM7226Pv1h1)
- M4100-50G-POE+ (GSM7248Pv1h1)
- M4100-26G-POE (FSM7226Pv1h1)
- M4100-50-POE (FSM7250Pv1h1)
- M4100-D12G (GSM5212v1h1)
- M4100-D10-POE (FSM5210Pv1h1)
- M7100 - firmware version 10.0.1.x
-
- M7100-24X (XSM7224)
- XSM7224S - firmware version 9.0.1.x
Last Updated:07/07/2025
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Article ID: 21793