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How to Reset Ubuntu Network Without Reboot

Once in a while my home wireless network burbs, and I need to reconnect. . Kubuntu's network manager tries to reconnect to my network and hangs.

I have tried /etc/init.d/networking restart, and this does not cause a reconnect.

All I want to do is bring the network down and restart it without rebooting. Doing things like this is what makes Linux great; I'm just trying to research the steps.

Try these commands:

This will take down all interfaces:

Code:

sudo ifdown -a

This will bring them all back up again

Code:

sudo ifup -a

You can do it by interface, but you'll have to check out the man pages for that!

Hi,

if you use knetworkmanager as your mentioned KDE Network Manager, restarting the networding script cannot work:

1)
The script does only handle network devices that are configured in /etc/network/interfaces (on debian an related distributions - others might have a coresponding file somewhere).
2)
The knetworkmanager does only manage devices that are _not_ listed in the interfaces file mentioned above. This is usefull for mobile network devices - like your wlan device.

Both ways to configure network devices work complementary.

If my WLAN hangs, I usually reconnect the device using the knetworkmanager GUI (translation could differ, I run no english system):

Code:

1) Right click the icon 

2) Select "Options" 

3) Select "Change to offline modus" 

Wait until everything is disconnected 

4) Repeat 1 and 2, select "Change to online modus" 

Wait until everything is reocnnected.

Perhaps, you have to select your WLAN manually after changing towards online modus.

Hope this one helps,
Greet-o-mente

@neilneil2000:

IIRC, for those commands is the same valid:
They only manage devices configured in /etc/network/interfaces.
And if the op uses knetworkmanager - what I assume - the desired device is not configured there.

Hello

After bad experiences with networkmanager, I installed Wicd: http://wicd.sourceforge.net/

Also very easy to connect or disconnect.

Bye

Koen Plessers

This performs the reset.

Quote:

Originally Posted by Clemente (Post 3220634)

Code:

1) Right click the icon 

2) Select "Options" 

3) Select "Change to offline modus" 

Wait until everything is disconnected 

4) Repeat 1 and 2, select "Change to online modus" 

Wait until everything is reocnnected.

Perhaps, you have to select your WLAN manually after changing towards online modus.

Hope this one helps,
Greet-o-mente

This shuts down and restarts network manager.
thanks

ifdown ethX,ifup ethX (X is the interface #)

Restart network interface Ubuntu

Code:

$ ifconfig eth0 down

Code:

$ ifconfig eth0 up

this works for wired connections