On Sep 17, 2011, at 8:24 PM, Usman Latif wrote:
practice I am aware of is /60s and most providers are doing at least /56. I still think /48 is better.
It's really not about dense packing the hosts into the /64 and actually having 18 quintillion hosts on a subnet. Of course, nobody would do that, it exceeds the practical scaling limits of the layer 2 topology. However, it means that you don't have to worry about counting hosts. Every network has enough numbers available for every host.
Owen
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