Re: how many bits of entropy do we need for load balancing?

Sorry to have sent unedited mail. On 2020/12/15 3:16, Lawrence Wobker wrote:

So I’d argue that the pedantic answer is “you need only as many bits of entropy as your largest fan out” — meaning that 10 bits would allow 1024-way ECMP. But I don’t think that’s what you were actually after...

But, that is the proper answer for backbones where fair load balancing is really required with many flows from many sources and destinations. As the required number of bits for the entropy is, as you pointed out, very small, at the backbones, even entropy by source and destination addresses should be, in practice, enough. Masataka Ohta