Overview: This article is intended for IT Admins who want to discover the ideal MTU between network A and network B, such as from a site broadband to a server on the internet. The free 3rd-party tool mturoute.exe is not endorsed or warrantied by us, but we are helpfully sharing usage tips for any IT Admins that choose to try the tool.
Current version of tool can be downloaded from https://www.elifulkerson.com/projects/mturoute.php (we've also attached an archived copy from 2017)
Steps for use:
- Extract the ZIP archive to C:\Diags\mturoute.exe
- Open command prompt or Power Shell and change to C:\Diags directory
- Type command as follows, replacing "remoteserver.com" with "network B" hostname or IP address
mturoute -t -d -m 1500 remoteserver.com
This will measure the optimum MTU packet size for each reachable (responds to ICMP) hop along the route, finally measuring the ideal MTU to the destination (if reachable, and if responding to ICMP). For a less detailed output simply use mturoute without any parameters other than the destination:
mturoute remoteserver.com
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