The following diagram shows the NSP ecosystem and provisioning of redundancy within a single-site deployment.
The NSP, where the NRC-P component resides, is protected by a cluster of three Virtual Machines (VMs). This local redundancy scheme elects one VM as the active and the other two VMs become standby backups. NSP must always be deployed in a cluster of three VMs.
The VSR-NRC module runs the integrated SR OS virtual SIM model (1 CPM+IOM VM) and can be deployed standalone.
The VSR-NRC can be protected with a VM cluster implementing the 1+1 redundancy scheme. The local redundancy provides for continuous full and partial synchronization of the TE-DB and LS-DB between the active VSR-NRC and the backup standby VSR-NRC, as well as with the local NRC-P.
The details of the VSR-NRC 1+1 single-site redundancy mechanism are provided in VSR-NRC 1+1 single-site redundancy.