Getting to the Command Line - how-to-determine-the-mtu-size-of-the-lan-and-wan-of-your-router/Getting-to-the-Command-Line
Determining Correct Maximum Transmission Unit Size
ft:locale
en-US
ft:sourceName
Paligo_Prod
Document Type
Article
Windows:
Select Start, and type “cmd”.
On a Mac OS:
Go to /Applications/Utilities/Terminal.app.