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I need to replace an aging DHCP server by a fault tolerant solution. I consider using the ISC dhcp server solution which can be setup either as split servers serving non-overlapping ip ranges or as a master-slave cluster.

The network is of the SOHO type having less than 50 dynamic ip's and a a couple of reserved ip's. Only one subnet (/24). The network is composed of Windows clients, network printers and Linux servers.

I tested both solutions and they are both working ok. I only had one problem in the master-slave setup when the master time was offset to an extend that the slave couldn't properly sync despite desperately trying to catch up (95% cpu). Problem was solved by syncing time more frequently and never occurred again.

What's your experience and what would be the most stable and the most scalable solution?

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