UFM Software Architecture
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The following figure shows the UFM high-level software architecture with the main software components and protocols. Only the main logical functional blocks are displayed and do not necessarily correspond to system processes and threads.
UFM High-Level Software Architecture
Third-party clients are managed by the REST API.
Support for UFM’s API and a set of tools that enhance UFM functionality and interoperability with third-party applications are provided as part of UFM.
UFM server is a central data repository and management server that manages all physical and logical data. UFM-SDN Appliance receives all data from the Device and Network tiers and invokes Device and Network tier components for management and configuration tasks. UFM-SDN Appliance uses a database for data persistency. The UFM-SDN Appliance is built on the Python twisted framework.
Subnet Manager (SM) is the InfiniBand “Routing Engine”, a key component used for fabric bring-up and routing management.
UFM uses the Open Fabric community OpenSM Subnet Manager. UFM uses a plug-in API for runtime management and fabric data export.
NVIDIA Scalable Hierarchical Aggregation and Reduction Protocol (SHARP) is a technology that improves the performance of mathematical and machine learning applications by offloading collective operations from the CPU to the switch network.
Aggregation Manager (AM) is a key component of NVIDIA SHARP software, used for NVIDIA SHARP resources management.
For further information about NVIDIA SHARP AM, refer to Appendix - NVIDIA SHARP Integration .
The UFM Performance Manager component collects performance data from the managed fabric devices and sends the data to the UFM-SDN Appliance for fabric-wide analysis and display of the data.
The Device Manager implements the set of common device management tasks on various devices with varying management interfaces. The Device Manager uses SSH protocol and operates native device CLI (command-line interface) commands.
UFM Switch Agent is an integrated part of NVIDIA switch software. The agent supports system parameter discovery and device management functionality on switches.
UFM uses the following communication protocols:
Web UI communicates with the UFM server utilizing Web Services carried on REST API.
The UFM server communicates with the switch Agent located on managed switches by proprietary TCP/UDP-based discovery and monitoring protocol and SSH.
Monitoring data is sent by the switch Agent to UFM server Listener by a proprietary TCP-based protocol.