What’s funny is that while BGP in the ToR switches provides for scalability and resiliency, they don’t use BGP as their primary protocol when exchanging routes with providers. That means that they are doing layer 3 all the way to their access layer. That’s a pretty unique take on things when you look at how many data centers are driving toward full virtualization.įacebook also runs BGP to the top-of-rack (ToR) switches in their environment. Najam said that inserting anything in between the server and what its function was added unnecessary overhead.
All of their operating systems and servers run directly on bare metal. Najam said that he didn’t really know what a hypervisor or a vSwitch were because they don’t run them at Facebook. Najam said when I asked him about stakeholder perceptions that he felt a little out of sorts on stage because Ivan Pepelnjak ( and David Cheperdak ( had spent the last fifteen minutes talking about virtual networking. He told me some things about Facebook that made me look at what they are doing a in a new light. He is their Director of Technical Operations. One of the most impressive people was Najam Ahmad from Facebook. There were some really smart engineers on that panel. While at the Software Defined Data Center Symposium, I had the good fortune to moderate a panel focused on application focused networking in the data center.
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