We're on the front end of an ACI (Application Centric Infrastructure) implementation project in our data center. From working a "legacy" network my entire career, this is taking some time to wrap my brain around.
Curious about the VTEPs and the pool we need to define during setup. Cisco recommends a /16 as a default, but if subnet size is a concern, a /19 will do. My reading/research reveals the fabric devices (leaf/spine) pull from this pool, but its not clear what other objects in the fabric would dip into this pool, as well. Our deployment is starting out with a couple spine switches, 8 leafs, and the min 3 APICs with the possibility of doubling the device count as legacy infrastructure is migrated to VM space. I am going to keep digging, but curious if anyone had run across info that would provide a "real-world" sizing perspective? I don't want to throw a whole /16 at it if I don't have to.
Thanks in advance.
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