Table of Contents
Executive Summary
Key Points
Telco Requirements And Definitions
Key terminology for Service Availability in NFV / networking services context
Service Availability and Continuity Targets and their Impacts on Infrastructure services
Fault Management Cycle
Fault Management Cycle Timeline
Infrastructure Services Relative Criticality
Different infrastructure services can have different impacts on the reliability of the infrastructure as a whole. Service components such as network switches can have a disproportionately high impact on the reliability of the entire infrastructure due to their connective nature. Conversely, traditionally emphasized components such as compute nodes mostly affect the VMs / Containers running on them.
The following table provides a high level view of the categories of the services / entities in the NFVI and VIM sublayers of the system SW stack. This high level analysis is based on the expected risk, which is determined based on entities (guest VMs as a proxy) at risk and the fault activation probability from the guest's perspective.
Service Availability and Upgrades
Upgrade Process
Container Upgrades
NFV Enhanced HA Architecture
Addressing Single Point of Failure
Fast Fault Detection and Notification Framework
Telemetry Collection
RT Fault Mgmt Agent (RFE x)
Background
RT Fault Mgmt Bus (RFE x)
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