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Similar to other types of SBC Core deployments, you can configure and manage SBC SWe deployed in an OpenStack cloud by directly accessing its CLI or EMA UI. However, in virtualized environments, you can also deploy SBC nodes as clusters. An SBC cluster can contain one to many nodes but, regardless of number, the cluster presents the nodes as a single, logical SBC service.
To present the combined node capabilities in this way, clustered nodes are configured with a common, homogeneous configuration. SBC SWe supports two configuration models to support different types of SBC deployments: OAM and Direct Single. You select the configuration type for the cluster when you create the cluster configuration in the Insight EMS
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OAM Node Configuration ModelThe OAM node configuration model incorporates a 1:1 HA pair of dedicated Operations, Administration, and Maintenance (OAM) nodes to configure and manage SBC nodes in N:1 deployments. In an N:1 deployment, multiple nodes (up to 4) are active at the same time and the active nodes are backed up by a single backup node. An OAM Node deployment must be instantiated with the SBC HA mode specified as "Nto1." The OAM nodes must be deployed in 'Nto1' mode with N=1. Figure 1: SBC Clusters with OAM Nodes The OAM node provides the northbound interface for the VNF, including SSH/CLI, NetConf, and RESTCONF interfaces. You use the OAM node interfaces to configure the cluster. The OAM node holds the active cluster configuration and is responsible for disseminating the cluster configuration to the SBC nodes within the cluster. Although the nodes register with the EMS
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Refer to SBC SWe Configuration Management Using OAM Nodes.
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Direct Single Configuration ModelThe Direct Single configuration model applies to deployments in which there is a single active SBC node, such as standalone or 1:1 HA deployments. A A Direct Single deployment must be instantiated with the SBC the SBC HA mode specified as "1to1." For this small type of deployment, the SBC node itself provides the northbound interfaces for the VNF while the EMS
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Refer to SBC SWe Configuration Management in Direct Single Mode.