This plugin can be download here: domains-v0.1-1.tgz
Currently, there is only support for one LDAP domain in Cacti. This plugins purpose is to extend that.
Allow administrators to add additional user login domains
Cacti PIA 2.8++, Cacti 0.8.7g++
Simply place in the plugins directory and install like any other PIA 2.x plugin.
To use this plugin, you first have to Install and Enable it. Once this is done, you must goto Console→Settings→Authentication and Choose Multiple User Domains as the Authentication method.
From there, simply add your AD and LDAP Domains as you normally would from the new Console Pick “User Domains”.
You can also specify a default Domain.
If you need additional help, please goto http://forums.cacti.net