I understand the "scale-out" ability of Spine/Leaf and how EVPN w/ anycast GW can ride overtop, and how you always have an equal amount of hops to the next leaf, can use your local leaf for routed egress, etc... What is the real world physical application of this topology? Is this basically only for top-of-rack vPC leaf pairs in a very large physical data center environment?
After recently learning/labbing it, EVPN to me seems like a very good DR strategy, so I'm wondering if an "EVPN Domain" can stretch across multiple spine/leaf pods, provided you have dark fiber links and can do jumbo mtu? If so, would you just land those links on a border leaf set, mesh VTEPs and call it a day?
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