L3 wise, this year we ran 120 9300s, all in OSPF area 0 with “no autostate” - very little churn in the routing table at the expense of the very TCAM-hungry two byte addressing scheme keyed mostly on “(service number, L3 node number)”
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L2 wise ~350 9200s, new this year; quite happy with them. Nice and bricky - so compared to 3560cx *much* easier to provision en masse, mechanically, and certainly faster to ssh into - the port changes generally completed within 3-5 seconds, as opposed to about 10 sec or so on CX series :-)
Another peculiarity - the addressing for uplinks is dynamic, with a local pool configured for the downlink interfaces, this gives a very Lego-like property of being able to easily adapt the design and not having to track the exact wiring - if both ends of the cable end on our infra = 👍
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