  During the current run of an electron-positron collider DAFNE special
electrodes for electron cloud suppression have been inserted in all dipole and
wiggler magnets of the positron ring. In this paper we discuss the impact of
these electrodes on beam dynamics and overall collider performance. In
particular we report results of measurements such as e-cloud instabilities
growth rate, transverse beam size variation, tune shifts along the bunch train
etc. with the electrodes switched on and off that clearly indicate the
effectiveness of the electrodes for e-cloud suppression.
