network card question

Ok today, the isp that supplies the connection to my server, went down, for over an hour

Well, when it came back up, the server wasn't back online to the world

Do you have to do something to get the network card to check if a connection is present?

the system is redhat 7.3

or do u just have to deactivate and reactivate the network card??

i restarted the server to get it back online once the connection came back up.

But the server was running fine, the server loads were : 1.96, 0.93, 0.57

 

 

 

 

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