[Rift] 4 questions(draft-przygienda-rift-dragonfly-00)

wei.yuehua@zte.com.cn Thu, 02 November 2023 08:53 UTC

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Subject: [Rift] 4 questions(draft-przygienda-rift-dragonfly-00)
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Hi, tony
When I read the draft, I got 4 questions. I appreciate your clarification.
1)  In 1. Introduction 
"We can see that it is nothing else but a multi-plane CLOS with a lot of broken links for standard RIFT."

Does broken links means: direct links between LB1 and SA1/SA2/SC1/SC2,direct links between LB2 and SA1/SA2/SC1/SC2  and so on?
In figure 1, totally 24 broken links?

2) In figure 2, is Fabric A a PoD, or LA2 and LA1 form a PoD, or PoD is not applicable to Figure2?

3) If we look at Figure 3, there are 2 PoDs each for Fabric A and Fabric B?

4) 4.1. Additional Bi-Sectional Bandwidth Route Computation Chang 
Does  this draft limits the sparse DF+ topology  to only 2 links coming out of one ToF ?
Is tri-sectional possible for sparse DF+ if I have  more than 3 fabrics?

Thanks



Best Regards,
Yuehua Wei
M: +86 13851460269 E: wei.yuehua@zte.com.cn