Multiple independent data sets that must be synchronized are an accident waiting to happen in any field. With respect to wireless LANs, they present a particular problem for DHCP service. To make life as easy as possible for users, it would be best if stations automatically configured themselves with IP network information. DHCP is the best way to do this. Access points frequently include DHCP servers, but it would be folly to activate the DHCP server on every access point. Multiple independent DHCP lease databases are the network equivalent of a tanker-truck pile-up waiting to happen. To avoid the "multiple independent database" problem, have a single source for IP addressing information. Furthermore, some access points may reclaim addresses if an association lapses, regardless of whether the lease has expired. For these reasons, I recommend using an existing DHCP server or installing a new server specifically to support wireless clients. Depending on the importance of the wireless infrastructure, it may be worth considering a backup server as well.
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