Carrier-of-Carrier (CSC) VPNs

CSC is supported for customers who want to provide VPN service. Layer 3 VPNs based on BGP MPLS are used by service providers to provide VPN services to end customers, enabling these customers to use the MPLS backbone network to connect their multiple sites seamlessly. Include the labeled-unicast statement in the configuration for the IBGP session to the carrier-of-carriers customer's CE device and include the family-inet-vpn statement in the configuration for the IBGP session to the carrier-of-carriers PE device on the other side of the network.