The VMware Smart Assurance VPN-Tagging Server, which is an optional server in the MPLS Management Suite of products, assists the IP Manager in the creation of certain overlapping IP-address configurations. The VPN-Tagging Server discovers VPN routing and forwarding (VRF) based network connections and sends the connection information to the IP Manager so that it can distinguish overlapping IPs in the managed MPLS network. An IP Manager deployment that includes the VPN-Tagging Server shows the flow of information for the VPN-Tagging Server.

Figure 1. An IP Manager deployment that includes the VPN-Tagging Server

You must explicitly invoke the Discover All command on the IP Manager to import all the overlapping IP-address configuration information from the VPN-Tagging Server. That is, after the initial topology synchronization between an IP Manager and the VPN-Tagging Server, you must explicitly invoke the Discover All command on the IP Manager to import all IP tag and connection information from the VPN-Tagging Server.

The procedure for invoking the Discover All command is given in the VMware Smart Assurance IP Manager User Guide.

The VMware Smart Assurance MPLS Manager Discovery Guide Supplement provides information about how the VPN-Tagging Server solves the overlapping IP discovery problem.