3 years ago we build small datacenter with vPC using cisco nexus, HRRP all sort of things but later we just started adding more and more racks and now i have 45 racks and and around 100 switches including 2xTOR and core etc.. now it's giant L2 network (yes we are using vPC so every link is active-active) but question is do i need to worry to add more 10 racks in existing network?
STP is dangerous for large network but does it act differently with we use with vPC (reduce BPDU etc?), same way i am also worried about BUM traffic in L2 network.
Now it's too late to convert Tier 2 design to Spine-Leaf :( we know spine-leaf eliminate STP at leaf level but now question does it going to help with BUM traffic using evpn? (if yes then how much it help with BUM)
Soon we are going to open datacenter in one more co-location and i want to make sure i understand everything before we say let do Tier 2 vs Clos design. what do you think?
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