ifup/ifdown read your sysconfig/network-scripts/ifcfg-eth# config. ifconfig does not, so must be told how to configure the nic usually.

On Mon, Feb 3, 2014 at 3:30 PM, mcclnx mcc mcclnx@yahoo.com.tw wrote:

I and testing command line to up and down ethernet connection.

if I perform following, client can not re-connect. ifconfig eth0 down ifconfig eth0 up

if I use following, client can re-connect: ifconfig eth0 down ifup eth0

What difference between "ifconfig up" and "ifup"?

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