Fabric, the next-generation Facebook data center network

This general spine-leaf, and subsequent super-spine construction, are talked about frequently in recent networking conference talks. Using ECMP on top of OSPF&#x2F;BGP are very well established ways to build super-switches to scale to super large fabrics.<p>I&#x27;d be really interested in the specifics that they don&#x27;t describe very well regarding cable layouts and automated configuration of pods.<p>Also, for anybody stuck in the old paradigm of super-expensive inflexible switches from the traditional network vendors, be sure to check out the commodity stuff that was mentioned previously in this HN thread:<p><a href="https://news.ycombinator.com/item?id=8400953" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=8400953</a>

&gt; What’s different is the much smaller size of our new unit – each pod has only 48 server racks<p>48 Racks seems pretty darn large by itself, and that is the smallest unit they deal with. At only 20 servers in a rack, thats 960 servers in their smallest unit. And they make it seem like there are hundreds of these pods in a single datacenter...<p>A single pod is bigger than the vast majority of the top 500 super computers...

their schematics of datacenter reminds about schematics of a big server 15 years ago. Server racks instead of CPU-boards. &quot;The datacenter is the computer.&quot;