Occupancy
Who had this IP last Tuesday?
Paste the IP. Pick that day. Export CSV.
Windows DHCP usually gives you the current lease or an export. A ping is not a grant. Lattice occupancy is every remaining lease row — who held .55, which NICs this hostname used, where this MAC has been, what sat on Gi1/0/12. The grant is the log. As-of is that calendar day on this computer.
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Today
The plan usually lives in a sheet (or phpIPAM). Offers still come from Windows, ISC, or Kea. You keep those stories aligned yourself.
Lattice
Prefixes, pools, reservations, and leases are one catalog. dhcpd serves those rows; the console writes them. There is no second copy to sync. A/PTR follow the grant into the DNS you already run — Ack does not wait on a nameserver.
Cutover
Occupancy starts at the first Ack Lattice grants. Windows lease tables, dhcpd.leases, and Kea lease-dumps do not import. Dump scopes and reservations, map them, POST /api/v1, point relays at Lattice. History fills in as clients Renew. Playbook: Migrate.
Paste an IP, MAC, hostname, or switch port
More → History. Lattice detects which. As of a calendar day (YYYY-MM-DD, that whole day on this computer) or an RFC3339 instant. From/to clips overlapping holds. Readonly can look. CSV is the hold table.
The whole VLAN last Tuesday
Not History paste of a CIDR. Open the subnet and use As of on the address map. Occupancy is who held each address at the end of that day (now, if you pick today). Reservations, assignments, and excludes on that map are the current plan, not time-travel. IPAM · History.
FAQ
- Who had this IP last Tuesday?
- Open More → History. Paste the IP. Fill As of with that calendar day on this computer. Occupancy is every remaining lease row — who held it, for how long, which MAC. CSV is the hold table. History playbook.
- Is that Audit?
- No. Audit is who reserved .10. History is who held .55. Search is who has it now — the whole VLAN last Tuesday is As of on the subnet address map, not a History paste of a CIDR.
- Does Windows DHCP keep occupancy history?
- Windows is the current lease or an export. MMC does not answer last Tuesday. Lattice occupancy is lease rows dhcpd already wrote. Lattice does not prune them.
- Do you import old Windows leases so History is full on day one?
- No. Live leases do not import. Occupancy starts at the first Ack Lattice grants. Dump scopes and reservations, point relays, then History fills in as clients Renew. Cutover.