CMDB keeps each client's network documentation accurate by finding what's actually there. Network/IPAM records the client's subnets, VLANs and address lists, and can sweep them for live hosts. Discovery collects what RMM and network scans found, so you can match each result to an existing config item or create a new one. Your documentation stays in step with reality instead of drifting.
Before you start
Pick the client in CMDB first. Both pages are client-scoped. See Select a client in CMDB.
How To: Scan a subnet
- In the sidebar, under Network, open Network/IPAM and open the subnet you want to scan.
- Click Scan Now. A TCP probe sweep runs against the range.
- When it finishes, the subnet shows how many addresses are live and which hostnames and MACs were found.
How To: Scan on a schedule
On the subnet's detail page, turn on the schedule. Scheduled scans run every six hours.
How To: Review discovery results
- In the sidebar, under Security, open Discovery.
- The Pending list shows everything RMM discovered or a network scan found.
- For each result, click Match to link it to an existing CI, or Create CI to add a new one.
- To have new CIs added for you, set up Auto-Create.
Why this matters
Discovery fills in the CMDB, and the CMDB feeds everything after it. Matched CIs are what you link passwords, warranties and relationships to. Accurate relationships are what make topology and impact analysis trustworthy before a change.
Troubleshooting
A network scan found nothing. Check that the subnet definition matches the real network, and that the scan runs from a location that can reach it.
A discovery result won't match. If the existing CI isn't in the match picker, check that both records belong to the same client. Rename the CI or add an alias so the two can be tied together.