NonStop S-Series Server Description Manual (G06.27+)

HP NonStop S-Series Server Description Manual—520331-004
2-1
2 Principles of System Operation
This section describes the fundamental operations that implement the architecture
described in Section 1, Introduction. The first few topics define the method of
identifying ServerNet devices and the structure of ServerNet packets, which are the
basic entity for communication between ServerNet devices. Following those
discussions are several topics describing the way ServerNet transactions are handled
by the processor logic. These transaction principles are common to both interprocessor
communications and processor-I/O operations. Subsequent sections separately
describe the principles that are unique in interprocessor communications and in I/O
operations.
The topics covered in this section are:
ServerNet Devices
ServerNet Device Identification
ServerNet Packets
Packet Transmission and Reception
Sequence for Outgoing Requests
Sequence for Responses to Outgoing Requests
Sequence for Incoming Requests
Sequence for Responses to Incoming Requests