ZYXEL-LEGACY-PRIVATE-VLAN-MIB

Description: Manages ZyXEL legacy private VLAN configuration for port isolation in older switch firmware versions.

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This is a ZyXEL private MIB for an older, legacy implementation of private VLAN port isolation, used on earlier ZyXEL switch firmware to keep designated ports from communicating with each other while still sharing an uplink. It exposes configuration data describing which ports are grouped into isolated relationships. Its monitoring value is mostly configuration verification rather than hardware/software health: confirming which ports are isolated lets an admin validate that the intended traffic-separation policy is actually in effect. It sits alongside the standard bridge/VLAN objects (Q-BRIDGE-MIB) rather than replacing them, since private VLAN isolation is layered on top of standard VLAN membership. It was deployed on older ZyXEL switches in small-business and SOHO environments needing simple port isolation without provisioning a full VLAN per port, and administrators can consult the ZYXEL-LEGACY-PRIVATE-VLAN-MIB MIB definition when auditing these legacy configurations.

No sample object names were provided for this MIB, so specific identifiers can't be cited here. Conceptually, an admin would poll the private-VLAN port isolation membership per port to confirm which ports are configured as isolated from one another, and an unexpected membership entry would reveal a misconfiguration allowing two ports to communicate when they should be kept separate.

Manages legacy private VLAN configuration on ZyXEL switches with promiscuous port and VLAN tagging support.