The record that saves you.
WHAT TO DOCUMENT
Equipment: what it is, where, and its configuration
Addressing: the range used, and fixed addresses
Wireless network names and where credentials are stored Cable runs and what they connect Provider details and account references Who to contact for what
WHY
In a fault, nobody remembers.
And if you are unavailable, nobody knows.
WHAT NOT TO INCLUDE
Passwords in plain text.
Reference where they are held.
WHERE TO KEEP IT
Somewhere reachable when the network is down.
A printed copy, and a digital one elsewhere.
WHAT TO UPDATE
Whenever anything changes.
An out-of-date diagram misleads during a fault.
WHAT A SIMPLE DIAGRAM SHOWS
What connects to what.
Hand-drawn is fine.
HOW OFTEN TO REVIEW
Annually, and after any change.
WHAT IT ENABLES
Someone else fixing a problem, and faster resolution generally.