During the expansion of network, service providers may want to expand the MPLS VPN backhauls to various locations. Imagine if the direct media between the two locations is not available but the availability of another service provider is there between the two. In this scenario, the best option is to use the transparent services of the service provider who is running ip backhauls. This could be achieved very easily with the help of xconnect and the third service provider will become a transparent cloud or another words we can say end to end lease circuit. The advantage of using this technique is that the customers which are being served by MPLS VPN service provider won't be able to see the ip cloud. For customers end to end media is of MPLS VPN service providers.
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