gRPC is a modern, open-source, high-performance RPC framework that runs in any environment. In SR OS, this framework is used to implement the gRPC server, which can then be used for configuration management or telemetry.
The gRPC transport service uses HTTP/2 bidirectional streaming between the gRPC client (the data collector) and the gRPC server (the SR OS device). A gRPC session is a single connection from the gRPC client to the gRPC server over the TCP/TLS port.
The gRPC service runs on port 57400 by default in SR OS. The service is not configurable.
A single gRPC server supports concurrent gRPC sessions and channels.
There is a maximum of eight concurrent gRPC sessions for all of the gRPC clients.
There is a maximum of 225 concurrent gRPC channels for all of the gRPC clients.
Figure: Protocol stack shows the gRPC protocol stack.
