MBONE: Multicasting Tomorrow's Internet
Between continents there will probably be only one or two tunnels, preferably terminating at the closest point on the MBONE mesh. In the US, this may be on the Ethernets at the two FIXes (Federal Internet eXchanges) in California and Maryland. But since the FIXes are fairly busy, it will be important to minimize the number of tunnels that cross them. This may be accomplished using IP multicast directly (rather than tunnels) to connect several multicast routers on the FIX Ethernet.
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