Traffic Segmentation-Protected Port
The protected port is a feature that does not forward any traffic (unicast, multicast, or broadcast) to any other port that is also a protected port. However, a protected port can communicate with an unprotected port and vice-versa.
The protected port is a feature that does not forward any traffic (unicast, multicast, or broadcast) to any other port that is also a protected port. However, a protected port can communicate with an unprotected port and vice-versa.
• Protected port(isolated) to protected port(isolated) - communication is not allowed.
• Protected port(isolated) to protected port(community) - communication is not allowed.
• Protected port(isolated) to protected port(promiscuous) - communication is allowed.
• Protected port(community) to protected port(community) - communication is allowed.
• Protected port(community) to protected port(promiscuous) - communication is allowed.
• Protected port(promiscuous) to protected port(promiscuous) - communication is allowed.
• Unprotected port to protected port(any type) - communication is allowed.
The protected port configuration is local to the switch. This information is not propagated outside the switch. Protected ports across switches can still be able to communicate with each other.
The use of protected ports ensures that there is no exchange of unicast, broadcast, or multicast data traffic between ports on the same switch so that one neighbor does not see the traffic generated by another neighbor.
Last modified date: 10/12/2023