net directed broadcasts

[Fred Baker <[e-mail]>]

this is one for rumination:

There is a fair amount of discussion of network-directed and
subnet-directed broadcasts. Since in a classless world the difference
between a network, a subnet, and a supernet is primarily in who assigned
it, I have changed the name uniformly to "network-directed". The concept of
letter bombing was an interesting one in a classful world, and is downright
amusing in a CIDR world.

I am, of course, aware of a few applications that use letter bombs instead
of IP multicast. The best I can do, I think, is indicate that the use of
network-directed broadcasts is a historical approach that some routers
support, and that should be supplanted in time by IP multicasting.

Does anyone have additional thoughts?

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