How does MPLS enable VPNs?
Since MPLS allows for the creation of “virtual circuits” or tunnels, across an IP network, it is logical that service providers would look to use MPLS to provision Virtual Private Network services. Several standards have been proposed to allow service providers to use MPLS to provision VPN services that isolate a customers traffic across the provider’s IP network and provide secure end-to-end connectivity for customer sites.
