The following command example tests for Jumbo Frames capability, which is usually an MTU (max transmission unit) of 9000 bytes.

We use '8972' because that plus the overhead equals 9000 (as seen in the output of the ping command).

At the Linux CLI:

ping -M do -c 1 -s 8972 <hostname or IP>

• -M do (don't fragment)
• -c 1 (send one packet)
• -s 8972 (send 8972 byte packet, plus overhead)

ping -f -l 8792 <hostname or IP>

These are tools which will figure out the MTU across the path between the host and the target:

• For Windows
  • mturoute
• For *nix
  • tracepath
  • traceroute –mtu