@F1ght3r: I need to correct you a bit.
QFX5120-48Y can currently be purchased in two variances: "legacy" and "flex" with different list prices.
QFX5120-48Y-AFO is the legacy SKU
QFX5120-48Y-AFO2 is the flex SKU
The flex SKU is lower priced but also comes with fewer base features. We have been used to having virtual chassis, OSPF, routing-instances and similar included in the base SKU. That is not the case with the flex model anymore... but as mentioned, the hardware list prices has been lowered accordingly.
If you buy a legacy HW SKU, you should buy the QFX5K-C1-PFL license + support
If you buy a flex HW SKU, you should buy either the 3 or 5 year subscription SKU *or* the perpetual flex SKU (S-QFX5K-C1-A2-P) + support.
Overall the Flex A2 subscription matches the features of the legacy PFL license.
Flex P1 matches legacy AFL license.
Bonus note: the legacy licenses and the perpetual flex license are non-portable where the subscriptions can be migrated between devices.
I hope this clarifies a bit 🙂
