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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> NANOG <nanog-bounces@nanog.org> on behalf of Valdis Kl�tnieks <valdis.kletnieks@vt.edu><br>
<b>Sent:</b> Friday, May 3, 2019 7:22:52 PM<br>
<b>To:</b> Sadiq Saif<br>
<b>Cc:</b> nanog@nanog.org<br>
<b>Subject:</b> Re: Looking for audiovisual resources on Clos topologies</font>
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<div class="PlainText">On Fri, 03 May 2019 13:08:55 -0400, Sadiq Saif said:<br>
> I recently read a APNIC blog post about LINE's network redesign [0] into <br>
> a Clos topology. That lead to me RFC7938 [1] which has a fairly minimal <br>
> explanation of the topology design itself.<br>
<br>
>From the APNIC blog:<br>
<br>
"In the case of LINE's network, where all servers in the data centre are<br>
identified by eBGP, more than 10,000 ASNs are required."<br>
<br>
They've traded L2 VLAN complexity for L3 ASN complexity. What's the old<br>
saying in computer science? "All problems can be solved by adding a level<br>
of redirection"?<br>
<br>
> <a href="https://blog.apnic.net/2019/05/03/simplicity-is-key-to-network-redesign-for-line/">
https://blog.apnic.net/2019/05/03/simplicity-is-key-to-network-redesign-for-line/</a><br>
<br>
Apparently, "simplicity" is the new euphemism for "let's push all the surprising<br>
emergent effects of our design to someplace new..."<br>
<br>
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