Start with a map
Knowing where systems live is a useful starting point for network operations. Device inventories, locations, connections and service dependencies should be visible together.
Devices have different access needs
User devices, servers, guest access and production systems serve different needs. Access rules should describe the connections the business actually requires. Segmentation begins with understanding those requirements.
Make problems observable
During an outage or slowdown, useful measurement points and logs matter. Device status, link changes and dependencies help locate where the issue starts.
Documentation belongs to the infrastructure
A network map should not remain a picture of installation day. Change records, access plans and current topology reduce reliance on individual memory.