This design guides assumes that the reader has previous knowledge about IP multicast and MPLS. For readers unfamiliar with these topics, please visit:
"MPLS VPNs
http://www.cisco.com/en/US/tech/tk436/tk428/technologies_configuration_example09186a00800a6c11.shtml
A separate function is required to enable IP multicast over a Multiprotocol Label Switching Virtual Private Networks (MPLS VPNs) network, as MPLS has no native ability to support it,.
