apologies if this is repeated. I'm not sure if the first post was accepted.
i am trying to understand when does a switch drop jumbo frames and when does it fragment it. if an end device (a server) is configured for jumbo frames and the switch is not , should'nt the switch fragment the frame to 1500 byte frames ?
in my test scenario I do a ping from the jumbo enabled server using a frame size of 2000 bytes. When jumbo frames is not configured on the switch and the default MTU is 1500 the ping times out ( i would have thought it would fragment it). When the switch is configured for jumbo frames the ping is successfull.
Your switch is configured to drop the frame, not fragement it. You can set your switch to fragment (managed switch). Fragmenting a lot of data runs the risk of causing poor switch performance.