In a traditional WLAN deployment, each radio of the AP can interact with the client devices on a maximum of eight networks.
In Mesh deployment, one of the radios of every Mesh AP establishes a Mesh link on an exclusive WLAN Service. The Mesh AP is therefore limited to seven network WLAN Services on the Mesh radio. The other radio can interact with the client-devices on a maximum of eight WLAN Services.
The WLAN Service on which the APs establish the Mesh link is called the Mesh WLAN Service.
A Mesh can be setup either by using either a single Mesh WLAN Service or multiple Mesh WLAN Services. The following figures illustrate the point.