Red Hat DIRECTORY SERVER 7.1 - DEPLOYMENT Deployment Manual page 192

An Enterprise
Figure 9-3 Server Topology for example.com Corporation
Modify requests from compatible servers are routed to the appropriate consumer
server. The consumer server uses smart referrals to route the request to the
supplier server responsible for the master copy of the piece of data being
modified.
192 Red Hat Directory Server Deployment Guide • May 2005