The amount of Mesh Gateways supported by Border Gateways is variable but should not exceed these guidelines.
For every one Border Gateway deployed, up to 20 Mesh Gateways can be deployed, depending on the Site's topology. However, as Mesh Gateways act as repeaters, any number of Mesh Gateways can be deployed on a Site.
Ensure each Mesh Gateway can communicate with at least two other Mesh Gateways. This ensures a reliable Mesh Network in the forest.
Additional Border Gateways can be deployed as a backup for the Mesh Network.
In the following figure, one Border Gateway (plus a backup Border Gateway) receives communication from 20 Mesh Gateways. Note the connectivity paths between Mesh Gateways. With a few exceptions, each Mesh Gateway connects with at least two other Mesh Gateways.
When using the Planning tool, the Connectivity tool helps to ensure Mesh Gateways have multiple paths to the Border Gateway.