Which of the following steps is essential to setup Station Isolation with VLAN Tagging?

Setting up Station Isolation with VLAN Tagging requires a robust network configuration that isolates the traffic between wireless clients while allowing for effective communication with the network. Connecting the access point (AP) devices to the VLAN interfaces is essential because it ensures that each SSID can communicate through the designated VLAN, maintaining separation between different wireless clients.

When APs are properly linked to VLAN interfaces, it allows for effective management of traffic and enhances security by preventing clients from communicating with each other directly. This is particularly important for scenarios where guest networks need to keep users isolated from one another, thereby enhancing security and performance.

Creating a guest SSID does facilitate the use of Station Isolation but does not directly implement the necessary configuration of VLAN tagging. Enabling WPS would not contribute to setting up VLAN Tagging or Station Isolation, as it is more about simplifying the connection process rather than isolating traffic. Transmitting the SSID on all channels does not pertain to the configuration needed for proper isolation; instead, it could lead to performance issues or interference in the network. Thus, the connection of AP devices to VLAN interfaces is the critical step in ensuring effective Station Isolation with VLAN Tagging.