Notes
One query a week.
A weekly answer to a question operators type. The changelog stays on Releases.
Oct 20, 2026
Community free, then Starter trial for three-node HA
Community is no license file: 1,000 managed IPs, one node, perpetual free. A 30-day Starter trial in the portal tests three-node HA before you buy.
Oct 13, 2026
phpIPAM holds a plan. Lattice Offers.
phpIPAM is good at prefixes. It is not your DHCP. A reservation in phpIPAM is a comment until something syncs it. In Lattice that write is the next Offer.
Oct 6, 2026
Microsoft failover partners don't come with you
You dump scopes for Lattice. Microsoft failover partners do not come with you. Live leases stay behind. Lattice HA is the same pool on every node.
Sep 29, 2026
Who held this IP — occupancy, not just the current lease
Helpdesk asks who had .55 last Tuesday. MMC shows the current lease — or nothing. Lattice occupancy is every remaining lease row as-of a day, CSV.
Sep 22, 2026
Why empty trusted relays drop your helpers
You pointed ip helper-address at Lattice and the VLAN stayed quiet. Empty Trusted relays drop relayed DHCP. List helper IPs before you point the helper.
Sep 16, 2026
Why switch off Windows DHCP and the spreadsheet
Windows DHCP plus a spreadsheet of used IPs are two systems. Lattice is one catalog — the reservation you save is the next Offer. Keep AD. Ubuntu tarball. Community is free.
Sep 8, 2026
Move Windows DHCP off your DCs before the OS upgrade
Upgrading DCs that also run Windows DHCP failover? Move DHCP off the controllers first — break the pair, park scopes, finish the DC work. Keep AD. Lattice path when you want one catalog.
Aug 31, 2026
How to dump Windows DHCP scopes
Dump Windows DHCP scopes and reservations with PowerShell, then map them. Lattice does not ingest Microsoft XML or live leases. Keep AD.