Centos Openldap server countiuntlly network is up and down what is issue
 

I observation that continually 3 message come kindly request anybody help out me.


1} kernel: tg3 0000:0a:02.0: eth1: transmit timed out, resetting

2} kernel: tg3 0000:0a:02.0: eth1: Link is down
Jun 29 10:26:37 kotakeducation1 NetworkManager[4178]: <info> (eth1): carrier now OFF (device state 8, deferring action for 4 seconds)
Jun 29 10:26:38 kotakeducation1 kernel: tg3 0000:0a:02.0: eth1: Link is up at 100 Mbps, full duplex
Jun 29 10:26:38 kotakeducation1 kernel: tg3 0000:0a:02.0: eth1: Flow control is on for TX and on for RX
Jun 29 10:26:38 kotakeducation1 NetworkManager[4178]: <info> (eth1): carrier now ON (device state 8)
Jun 29 10:30:38 kotakeducation1 NetworkManager[4178]: <info> disable requested (sleeping: no enabled: yes)
Jun 29 10:30:38 kotakeducation1 NetworkManager[4178]: <info> sleeping or disabling...
Jun 29 10:30:38 kotakeducation1 NetworkManager[4178]: <info> (eth0): now unmanaged
Jun 29 10:30:38 kotakeducation1 NetworkManager[4178]: <info> (eth0): device state change: 2 -> 1 (reason 37)
Jun 29 10:30:38 kotakeducation1 NetworkManager[4178]: <info> (eth0): cleaning up...
Jun 29 10:30:38 kotakeducation1 NetworkManager[4178]: <info> (eth0): taking down device.
Jun 29 10:30:39 kotakeducation1 NetworkManager[4178]: <info> (eth1): now unmanaged
Jun 29 10:30:39 kotakeducation1 NetworkManager[4178]: <info> (eth1): device state change: 8 -> 1 (reason 37)
Jun 29 10:30:39 kotakeducation1 NetworkManager[4178]: <info> (eth1): deactivating device (reason: 37).

3} kernel: ADDRCONF(NETDEV_UP): eth0: link is not ready
Jun 29 10:30:50 kotakeducation1 NetworkManager[4178]: <info> (eth1): now managed
Jun 29 10:30:50 kotakeducation1 NetworkManager[4178]: <info> (eth1): device state change: 1 -> 2 (reason 2)
Jun 29 10:30:50 kotakeducation1 NetworkManager[4178]: <info> (eth1): bringing up device.
Jun 29 10:30:50 kotakeducation1 NetworkManager[4178]: <info> (eth1): preparing device.
Jun 29 10:30:50 kotakeducation1 NetworkManager[4178]: <info> (eth1): deactivating device (reason: 2).
Jun 29 10:30:50 kotakeducation1 kernel: ADDRCONF(NETDEV_UP): eth1: link is not ready
Jun 29 10:30:52 kotakeducation1 kernel: tg3 0000:0a:02.0: eth1: Link is up at 100 Mbps, full duplex
Jun 29 10:30:52 kotakeducation1 kernel: tg3 0000:0a:02.0: eth1: Flow control is on for TX and on for RX
Jun 29 10:30:52 kotakeducation1 kernel: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready

I would never use NetworkManager on a server. I would recommend ripping it out and using the standard static service scripts.