[Beowulf] switching capacity terminology confusion

Rahul Nabar rpnabar at gmail.com
Mon Sep 14 18:43:50 EDT 2009


I was totally confused on the spec sheet (one example link below) for
switches. What is the difference between "Switching Fabric Capacity
288Gbps" and "User traffic capacity 176 Gbps"? The user traffic
numbers seem to be a lot lower than the switching fabric numbers. Is
this some sort of overhead? Or.....

If this weren't enough there is another mysterious number: "Stacking
Capacity 96 Gbps"  which is even lower than the others. How does one
interpret all of these. I started out with my simplistic view of "a
gigabit eth switch that supports full line capacity on all ports"


http://www.force10networks.com/products/pdf/Force10-S25N-S50N-FTOS.pdf

-- 
Rahul
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