sorry, I thought you had mentioned that the AN1 had been rate-based.
one of the primary reasons given for not selecting credits was the
associated switch costs. however, it turned out that the end-system
rate implementations had different behaviours, and no one got around
to implementing reliably correct ABR machinery on the switch-side
(which was hardly cheap either)
[as a side node I once spent an entire day trying to track down a
strange error with our software only to discover that the dec
gigaswitch-atm was mournfully sending out credits on a vc we
had thought we could use]
let me ask a different question, do you think there is likely to be
large differences in areas such a stability and performance between
rate and buffer-reservation based credits?