We are currently looking at moving one of our two data centres to a cloud provider and deploying VMWare NSX. We spoke to our network vendor recently and they discussed VxLAN and OVSDB and including our data centre routing hardware to manage the VTEPs and bring our physical routers under control of NSX to manage from single point. When we have spoken to VMWare sales about NSX they weren't really interested in discussing OVSDB and physical networking hardware and just said NSX will handle everything in software and all we as the network guys had to worry about was providing and maintaining a working L3 underlay network that can move traffic from one place to another. Reading online there is mention that hardware offers performance benefit over virtualised networking as it is built for the purpose but perhaps this is outdated view? Should we look to involve ourselves in the overlay network, or just leave it all to VMWare/NSX stuff and worry about the underlay? The technical sales guys seemed to just be trying to tell us as the networking guys not to worry and that it was all easy (as they always do). The more I learn about this stuff the more complicated it seems and the more questions than answers I have but everyone else is buying the sales talk of simplicity.
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