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Private VLAN

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Private VLAN

Private VLAN, also known as port isolation, is a technique in computer networking where a VLAN contains switch ports that are restricted such that they can only communicate with a given "uplink". The restricted ports are called "private ports". Each private VLAN typically contains many private ports, and a single uplink. The uplink will typically be a port (or link aggregation group) connected to a router, firewall, server, provider network, or similar central resource.
Feature hierarchy Feature Name
Private VLAN / Access Port Security on Private VLANs (PVLANs)
Private VLAN / IRB in PVLAN
Private VLAN / IRB in a PVLAN bridge domain
Private VLAN / Layer 2 Access Port VLAN member
Private VLAN / P-VLANs with egress VLAN list and 802.1X
Private VLAN / Private VLANs (PVLANs)
Private VLAN / RVI support for private VLANs