Our network used to have OSPF, BGP, DMVPN, redistribution, route-maps, prefix-lists, and all the cool stuff we network guys love to configure on our networks.
Now there's nothing left but static routes and directly connected networks.
Our wan which was BGP over DMVPN tunnels has been completely torn down and replaced with an SD-WAN product. That simplified our data center network tremendously as it got rid of all the redistribution and routing policies, and basically replaced it with a big dumb static route pointing at the VIP of our SD-WAN boxes.
As for the LAN side, we had a big push last year to move as many services to the cloud as we could, including our entire backup datacenter, which was shut down and moved to DR as a Service (cloud). Now there are so few physical hypervisors running the remaining of in-house services, we were able to collapse it down to a single pair of switches, and for good measure, we moved the IDF switches to this as well.
It then occurred to me that we no longer had any real use case for OSPF, turned it off on the core, and removed the other switches which were now empty.
Our network "evolved" (devolved?) into a single /16 static route for the WAN, a single default route for Internet access, and Directly Connected networks.
The way I see it, it's barely even a network anymore, at least not one that requires full time employees to maintain.
On the one hand I'm proud of my team for getting through this much in a frantic one year period, on the other hand I'm now worried that we've basically put ourselves out of work.
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