New Training: Private VLANS
In this 8-video skill, CBT Nuggets trainer Keith Barker explains, configures, and verifies Private VLANs (PVLANs) for controlling network traffic. Watch this new Cisco training.
Watch the full course: Implementing and Operating Cisco Security Core Technologies
This training includes:
38 minutes of training
You’ll learn these topics in this skill:
Introduction to Private VLANs
Trunking and PVLANs
What is a Private VLAN?
A private VLAN is the means of partitioning the Layer 2 broadcast domain of a single VLAN into multiple subdomains. This allows you to make the ports on the switch private by isolating them. In a private VLAN domain, there is a single primary VLAN that all secondary VLANs share, which are differentiated by secondary VLAN IDs.
Secondary VLANs can isolate ports within a private VLAN domain in two different ways. A secondary VLAN can either be an isolated VLAN, which means that their ports cannot directly communicate with one another at the Layer 2 level, or a community VLAN, which means that their ports can communicate with each other but cannot communicate with ports in another community VLAN or those in an isolated VLAN.
A private VLAN port can also be promiscuous, which means that it belongs to the primary VLAN and can communicate with all community and isolated ports on the secondary VLANs.