The IP Over NBMA (ION) Archive

[Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>]

Tim;

> In the ATM Forum's TM 4.0 specification, standardization of ABR was 
> limited to pt-pt as a practical consideration, in order to complete 
> the specification.  There is no doubt that it will be extended to 
> pt-mpt.  There was considerable work done in this area which did not 
> make the final edit of the TM specification.  All agree that it is a
> solvable problem, but more than one solution exists and we did not 
> reach agreement on all the details, in time to make the document's 
> publication date.

>From the best effort IP multicast point of view, if, among
1,000 receivers, 999 can accept 6Mbps and 1 can't accept
more than 64Kbps, what should the rate of the sender be?
What if, it's 800 vs 200? If it's not a sender but an
intermediate router at the edge of ATM network, what can
it do?

The answer, I think, is, it depends on the application and the
sender controls everything.

So, while ATM forum may have it's own policy of bandwidth
management, any bandwidth control suggested by the network
is not useful for IP.

							Masataka Ohta