Did you know that an entire segment of the Internet is dedicated to Multicasting? It is known as the MBone.
MBone acts as a common, shared utility for Multicasting. MBone can save customers significant costs, and can connect new sets of E-Commerce
users together in an entirely unique fashion.
Many ISPs already offer their customers access to this service.
Mbone (short for "multicast backbone") was an experimental backbone for IP multicast traffic across the Internet developed in the early 1990s.
It required specialized hardware and software. Since most Internet routers have IP multicast disabled due to concerns of bandwidth tracking and billing,
the Mbone evolved to connect multicast-capable networks over the existing Internet infrastructure. The commercialization of multicast routers is difficult because
there are no efficient access control capabilities to the multicast trees (multicast routers and their protocols), and because Internet service providers have difficulty
computing charges for multicast traffic.