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    High Availability in the Cloud CPE Centralized Deployment Model

    The Cloud CPE Centralized Deployment Model offers a robust Network Functions Virtualization (NFV) and software-defined networking (SDN) implementation with resiliency for the following features:

    • You can install the Cloud CPE Centralized Deployment Model on a Contrail OpenStack instance that you configure for high availability. This Contrail OpenStack instance includes three Contrail configure and control nodes in the Contrail Cloud Reference Architecture (CCRA), and provides resiliency for virtualized infrastructure managers (VIMs), virtualized network functions (VNFs), and network services.
    • You can install the Cloud CPE Centralized Deployment Model with high availability for Contrail Service Orchestration. This installation includes two Contrail Service Orchestration nodes on different servers in the central CCRA. Each of these nodes hosts instances of the Contrail Service Orchestration components and if a component on the primary node fails, the corresponding component on the secondary nodes takes over. Contrail Service Orchestration high availability provides resiliency for the GUIs, APIs, and the NFV management and orchestration (MANO) processes.
    • Network Service Orchestrator provides additional resiliency for VNFs and network services. If a network service becomes unavailable due to a connectivity issue with a VNF, Network Service Orchestrator maintains existing instances of the network service in end users’ networks and initiates recreation of the VNFs. During this recovery process, the end user cannot activate the network service on additional network links. When the problem is resolved, normal operation resumes and end users can activate the network service on additional network links.

    Modified: 2016-06-01