Network Documentation
What to record so troubleshooting and change work depend less on memory.
Addressing and services
Record subnets, gateways, DHCP scopes, reservations, DNS servers and important static addresses.
Segmentation
Document VLAN IDs, purpose, tagging expectations, SSIDs and the intended policy between network segments.
Physical and logical topology
Record switches, firewalls, access points, uplinks, WAN circuits, critical ports and how sites connect.
Management and monitoring
Record management addresses, controller platforms, logging destinations and monitoring ownership.
Vendor and circuit information
Keep ISP, circuit, account and escalation information where authorized staff can find it quickly.
Handle credentials securely
Document how access is obtained, not privileged passwords in an ordinary spreadsheet or public diagram. Use an approved credential-management process.
Use the guide as a conversation starter
The goal is not to make every reader a specialist. It is to make the next technical conversation more informed.
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