PERFORMANCE AND EVOLUTION OF MPLS L3 VPN BASED ON ISP ROUTERS & MULTICASTING VPN SUPPORT WITH PROTOCOL INDEPENDENT MULTICASTING (PIM- SPARSE DENSE MODE)

This paper provides an overview of Multicast principles and Internet protocol (IP) multicast in the IPV4 environment. In traditional IP networks, it is not possible to generate a single transmission of data. IP Multicast, an extension to IP, is required to efficiently support these communications needs; as these term implies IP Multicast has been developed to support efficient communication between a source and multiple remote destinations. This paper also discusses several mechanisms involved in multicast transmission. Routing protocols that may be utilized include: the protocol independent multicasting (PIM), PIM is currently the most widely used protocol. Internet group management protocol (IGMP) is used by host receivers to join or leave a multicast host group