Incumbent vendor switches
If you have existing vendor equipments that support OpenFlow, it would be a great way to start your migration path. Vendors such as Cisco, Juniper, and Arista, all have equipments that support OpenFlow. The depth of support and the degree of difficulty varies from vendor to vendor and in some cases, from device to device. Given some of the limitation as we will see later on, using incumbent vendor switch would be a great way to migrate to OpenFlow if you already have matched gears in your possession. In this section, I will use Arista gears running EOS 4.17 as an example. For more details, you can consult the EOS 4.17 OpenFlow configuration manual at https://www.arista.com/assets/data/docs/Manuals/EOS-4.17.0F-Manual.pdf ...
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