There is also some potential chance/benefit of having a non-blocking configuration, esp. on (a) busy network(s). I remember UK (Univ of Kentucky) having a VERY impressive flop count on a smallish (maybe 48 node AMD Athlon) cluster using 4 port 10/100 NICs in each node and a hurd of 100MB switches wired in such a way as to eliminate or at least minimize port blocking at SC '03, I think, in Phoenix. The Prof in charge said it took a small super computer to compute the optimum cabling scheme. Anyways, I thought it was a pretty cool way of building a super computing cluster on the cheap and this was back in the day when Myrinet was king of the hill @ ~ $2k per node for high speed low latency connectivity. If interested, they might still have the write up posted at <a href="http://aggregate.org">aggregate.org</a>.<br>
<br>GC <br><br><div class="gmail_quote">On Wed, Feb 24, 2010 at 5:00 PM, Jim Kinney <span dir="ltr"><<a href="mailto:jim.kinney@gmail.com">jim.kinney@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Absolutely! The top reason is for failover insulation. Loose a switch but connectivity.<div><div></div><div class="h5"><br><br><div class="gmail_quote">On Wed, Feb 24, 2010 at 10:52 AM, Jeff Hubbs <span dir="ltr"><<a href="mailto:jhubbslist@att.net" target="_blank">jhubbslist@att.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Are there reasonable uses of Ethernet bonding that incorporate<br>
connecting slave NICs of a given bond device to completely different<br>
switches? I've been looking over<br>
<a href="http://www.cyberciti.biz/howto/question/static/linux-ethernet-bonding-driver-howto.php" target="_blank">http://www.cyberciti.biz/howto/question/static/linux-ethernet-bonding-driver-howto.php</a><br>
for reference. I have not seen or used bonds that do anything other<br>
than connect to the same switch.<br>
<br>
- Jeff<br>
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