nanog mailing list archives
Re: how many bits of entropy do we need for load balancing?
From: Masataka Ohta <mohta () necom830 hpcl titech ac jp>
Date: Tue, 15 Dec 2020 23:43:58 +0900
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
Current thread:
- how many bits of entropy do we need for load balancing? Pascal Thubert (pthubert) via NANOG (Dec 14)
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- Re: how many bits of entropy do we need for load balancing? Lawrence Wobker (Dec 14)
- Re: how many bits of entropy do we need for load balancing? nanog (Dec 14)
- Re: how many bits of entropy do we need for load balancing? Saku Ytti (Dec 14)
- Re: how many bits of entropy do we need for load balancing? Jay Hennigan (Dec 15)
- Re: how many bits of entropy do we need for load balancing? Masataka Ohta (Dec 15)
- Re: how many bits of entropy do we need for load balancing? Masataka Ohta (Dec 15)
- Re: how many bits of entropy do we need for load balancing? Lawrence Wobker (Dec 14)
- Message not available
- Re: how many bits of entropy do we need for load balancing? Saku Ytti (Dec 14)