On Tue, Feb 12, 2013 at 6:59 PM, Avi Marcus <span dir="ltr">&lt;<a href="mailto:avi@avimarcus.net" target="_blank">avi@avimarcus.net</a>&gt;</span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Eliot, for those of us not running our own network, which datacenters/colos  offer multiple networks/nics?<div>e.g. amazon, rackspace, linode, softlayer..?<br><div><br></div><div>It&#39;s not something I recall seeing mentioned...</div>
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<div><br></div></font></span><div><span class="HOEnZb"><font color="#888888"><span style="font-family:Verdana,Arial,Helvetica,sans-serif">-Avi</span><br></font></span></div></div></div></blockquote></div><br>Honestly, I have never utilized such services. I have always worked for / with companies which run their own network. Regardless of what datacenter / colo you use, you need to ensure you have redundant communications between your nodes. This is true for *every* HA deployment. The way Sonus and other providers do it is to use a physical chassis which provides the redundant communication mechanism. When you do not have such a chassis, you must use a separate network connection. When you have only two nodes, it&#39;s easy to do a crossover cable between them. However, if you have lots of nodes, you need an entirely separate network. That separate network only needs to facilitate communication between nodes. It does not need Internet connectivity. <div>
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