SAR Configuration Server
The SAR Configuration Server model is a foundation model defined by the Bluetooth Mesh
specification. It is an optional model, enabled with the
CONFIG_BT_MESH_SAR_CFG_SRV configuration option.
The SAR Configuration Server model is introduced in the Bluetooth Mesh Protocol Specification version 1.1, and it supports the configuration of the segmentation and reassembly (SAR) behavior of a Bluetooth Mesh node. The model defines a set of states and messages for the SAR configuration.
The SAR Configuration Server model defines two states, SAR Transmitter state and SAR Receiver state. For more information about the two states, see SAR states.
The model also supports the SAR Transmitter and SAR Receiver get and set messages.
The SAR Configuration Server model does not have an API of its own, but relies on a SAR Configuration Client to control it. The SAR Configuration Server model only accepts messages encrypted with the node’s device key.
If present, the SAR Configuration Server model must only be instantiated on the primary element.