Lab testing I've done shows that the Active/Standby HA configuration works well if one or the other DHCP servers fails completely. Automatic takeover and recovery work nicely.
If an Active/Standby HA implementation were to go "split brain" with core network severed between DHCP servers, however, both would go active and the lease DBs would no longer be in sync. How to recover from that when the network is restored? I know there are a ton of variables involved - lease times, how long network was segmented, # subscribers, etc.... but I am wrestling with what would be the optimal approach/logic to consolidate and recover ? Help? Thanks folks, --David
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