Finding and setting the correct MTU for your PC and router is one of the most important tweaks you can make to your network. An improper MTU can cause a multitude of problems ranging from email to browsing to using a VPN. When you set your MTU you must make sure the MTU is identical on all PC NICs and your router. To find your optimum MTU please click here.

Very Important Notes:
•Due to some operational issues it is VERY important that you have the latest firmware on your Linksys router. Please to the Linksys Download Website and ensure you have the newest firmware.
•Some Linksys router models have an "Auto" MTU capability that does not function correctly and will create erratic speeds and performance. You must enable the "Manual MTU" function and manually enter 1492 (or less).

Step 1
Important note: The following screen shots are based on a Linksys BEFSR41v.2 router and your screen shots may be different, however the steps and configurations are the same. Open a browser session and enter "192.168.1.1" in the address field to access the Linksys Interface. At the Username and Password prompt enter "admin" (without quotes) in the Password Field.



Step 2
Click on the Advanced tab from the menu.



Step 3
Select the Filters tab and find MTU. Select "Enable" and enter your result from the ping test in the text field. Click Apply. The router will restart with the new settings.



Step 4
When you receive the confirmation pop-up click on Continue.



You're finished.

Andy Houtz