Date: Tue, 4 Feb 1997 21:56:52 -0600 (CST) From: Sean Donelan <SEAN@SDG.DRA.COM> Subject: NAP filters and multicast [...] I haven't looked to closely at multicast on the ATM NAPs. Are they using ATM's native multicast capability, or are they using multiple tunnels?

ATM's approximation of multicast is still pretty primitive. I would be very surprised if any of the ATM-based NAPs are trying to use ATM multicast to support the MBONE. -tjs