[CentOS] Centos 6.5 em1 network can not up????

mcclnx mcc

mcclnx at yahoo.com.tw
Thu Aug 7 15:56:07 UTC 2014


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

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?

Thanks.



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