Am 07.08.2014 um 17:56 schrieb mcclnx mcc: > We just got DELL R920 and installed Centos 6.5 on it. After installation, network not function. We manually enter IP address, gateway and netmark on "em1". > > > we also do following: > 1. startup NetworkManager > 2. /etc/sysconfig/network-scripts/ifcfg-em1 ==> NM_CONTROOLED=yes Jim has already pointed you to the typo. > I tried to startup network and get error message: > > Bring up interface em1: connection activation failed > Device not managed by NetworkManager or unavailable. > > Any ideal? http://wiki.centos.org/FAQ/CentOS6#head-b67e85d98f0e9f1b599358105c551632c6ff7c90 > Thanks. Alexander