How can i check mtu

Remember: You must add 28 to your results from the ping test! Problems connecting to my VPN or my applications stall and time out. There are usually two common problems associated with VPN connectivity. You can connect and authenticate to the VPN server but nothing else happens and applications stall, time out, or fail to load. Subscribe TP-Link takes your privacy seriously.

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Analysis cookies enable us to analyze your activities on our website in order to improve and adapt the functionality of our website. The marketing cookies can be set through our website by our advertising partners in order to create a profile of your interests and to show you relevant advertisements on other websites. Please set this carefully and contact your ISP for more information. Resolution for SonicOS 7. X This release includes significant user interface changes and many new features that are different from the SonicOS 6.

The below resolution is for customers using SonicOS 7. X firmware. Interface MTU - Specifies the largest packet size that the interface can forward without fragmenting the packet.

Press the OK to process the changes entered. An additional setting allowing fragmentation should be made to the default outbound rule. In this example, we will start with Ping www. If you receive a message saying that the packets need to be fragmented, perform the test again whilst reducing the packet size slightly. I found that is the highest I could achieve without fragmentation. Take the size of the packet you have found to be optimal and add Now that you have added 28 to the packet size, you have found your optimal MTU size for your network.

Your router may well be different and have more advanced options, allowing you to change the size. Login to your router and check the settings; you may find it hidden within the advanced settings menu. If, like me you are unable to do this, or would prefer to change the MTU size on each individual computer, here is a guide on how to achieve this through the Command Prompt.

Open a new Command Prompt window as an Administrator by searching for cmd in the search bar and right-clicking on the Command Prompt and selecting Run as Administrator. Type in the command: netsh interface ipv4 show subinterfaces and press Enter. This will show you your interfaces and current MTU size. Make a note of the interface name as you will need this shortly. Amazon Fire OS. Other Issues.

Contact Support. Last modified: November 10, The maximum transmission unit MTU feature on your router allows you to determine the biggest data size permitted on your connection. When to adjust MTU Values? Finding the correct MTU Values You can get the correct MTU values for your connection by simply sending out ping request and progressively lower down your packet size until it no longer needs to be fragmented. To do this, please follow the steps below: Press and hold the WinKey and R button to launch the Run window.