This section provides an overview of the general network description for Active-Standby Geographical Redundancy deployment.

The Geographical Redundancy deployment allows two SAPC nodes to be used in a mated pair providing a highly available configuration which is seen as one node in a telecom network. This mechanism works in Active-Standby mode, meaning one SAPC handles all traffic and provisioning and the other takes over whenever the active node becomes unavailable. To make transparent to the SAPC clients the existence of two nodes, both share a VIP address (one for traffic and another one for provisioning) providing a single point of access for both nodes. The VIP address is only announced by the active node.

Figure 1   Geographical Redundancy

In this configuration, customer routers are used to direct incoming traffic to the correct node. In previous figure, the node that has published the VIP Address gets the traffic. For more details, refer to SAPC Network Description.

The Geographical Redundancy network configuration can be added to every standalone deployment described in:

• BSP 8100 Network Configuration Guide or NSP 6.1 Network Configuration Guide, when the SAPC runs in a PNF deployment.

• SAPC VNF Network Configuration Guide, when the SAPC runs in a VNF deployment.

This section specifies how the two SAPC nodes are connected to the external network. All the networks and IP addresses described are routable through customer network. Before starting to configure the SAPC nodes network, all the details (IP addresses, Network, and so on) referenced in this section should be agreed with the customer.

This section describes the mapping, in the different pieces of networking equipment, of VLANs to Ethernet ports in PNF deployments or Networks to vNICs in VNF deployments.