Switch hardware refers to all the physical components inside the network switch enclosure (chassis). This includes fans, power supplies, status LEDs and network transceivers. In SONiC terminology, these are called “system devices”.
The SAI Host Adapter’s role is to provide a mechanism for storing and synchronizing network switch data with the Switch ASIC. This includes initialization, configuration and current status of the switch ASIC.
Network applications, such as a BGP routing protocol, use the Object Libraries API’s to get and set the state of the SONiC SAI Host Adapter.
