How can i change mtu

Thank You Thank you for taking the time to respond. Rating Submitted Do you have a suggestion for improving this article? Characters Left : Submit Cancel. Get information, documentation, videos and more for your specific product. Ask the Community. Need to Contact Support? See Support Options. Contact Support. By following the above procedures, you can change the MTU size of a network interface either temporarily or permanently in your Linux system.

Hope this helps! Visit us on LinuxWays. MTU Stands for Maximum Transmission Unit is the maximum size of the packet that can be transmitted from a network interface. Prerequisites Ubuntu View all posts. For example, the MTU size for Ethernet is bytes, whereas others will be larger and others will be smaller.

If the messages transmitted are larger than the MTU size, they will be divided into smaller packets before being sent. Thankfully, this process is both quick and easy to perform; no additional hardware or software is needed. You can perform the testing and make the necessary changes with just a computer and your router. The larger the MTU size is, the more data that can fit into fewer packets. This generally results in a faster and more efficient transmission of data across your network.

On the other hand, if an error occurs, the packet will take longer to re-transmit. Also, more data within fewer packets can result in the packets being bloated. Larger packets are more likely to suffer from delays and even corruption. A greater MTU size can also increase latency, whereas setting it to a smaller number can help improve the overall latency. Therefore, you should change the MTU size to be the maximum it can be without any detrimental effects. It may take a few tries to find the best size, but is worth the time investment to help optimize the performance of your network.

The simplest way to determine the optimal MTU size for your home network is through a simple ping test. Step Enter ping www. Make sure the site thisdoesnotexist Step Now, what we do next is to find out the best MTU value for your setup. We have to increase or lower the value until we find the correct value.

The correct value is the highest number that still gets a successful ping Reply. Do this: If you the first one fragmented then lower the number until you get a Reply from.

If you get the second one Reply then increase the number until you get a fragmented packet. The highest package size that is not fragmented and gets a successful reply is the best MTU value. Found the package size? Mine is bytes.