I am setting up jumbo frames for the first time on this network and want to make sure they are working end to end. I have done this in the past with windows by running “ping < storage_proc_IP > -f -l 9000”, so I figured the same type of thing would work in ESXi 4.1’s unsupported mode.
After setting up jumbo frames on the vmknics, vSwitch, physical switches, and storage system, I SSH’d into my ESXi 4.1 box and ran “vmkping < storage_proc_IP > -s 9000” and get this reply “9008 bytes from <storage_proc_IP>:icmp_seq=0 ttl=255 time=0.648 ms”. So you it looks like it worked right?
Well… being the ever skeptical person I am I then ran this command “vmkping < storage_proc_IP > -s 65000” and get this reply “65008 bytes from <storage_proc_IP>:icmp_seq=0 ttl=255 time=1.782 ms”.
So naturally I looked for a anti fragment switch like windows has in the -f, but I was unable to find one.
Can someone point me in the right direction as to how I should be testing jumbo frames with ESXi?