MTU Settings for Ubuntu

Setting your MTU settings adjust your internet connection.  With my connection, a default setting of 1500 causes some webpages not to display at all (i.e. Ebay, Microsoft, etc.)

My optimal settings are 1492 to change yours, open a terminal and type:

sudo ifconfig eth0 mtu 1492  (that is eth and zero)

When you reboot, the MTU will return to 1500 – to make it permanent you will need to edit one of Ubuntu’s files:

First type –

sudo gedit /etc/network/interfaces

Then carefully edit your file

iface eth0 inet static
mtu 1492

You should now restart your network with:
sudo /etc/init.d/networking restart

Check the new value type:
sudo ifconfig -a



Video showing ‘how-to’ set MTU on Ubuntu

MTU settings for Windows

About TCAT Shelbyville IT Department

The Tennessee College of Applied Technology - is one of 46 institutions in the Tennessee Board of Regents System, the seventh largest system of higher education in the nation. This system comprises six universities, fourteen community colleges, and twenty-six Applied Technology Colleges.
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