Jumbo frames and fragmentation

[netnewbie]

Hi All

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.

thanks for any explanations and help

 

[Hawkeye22]

I believe all devices on the network must support jumbo frames (and be enabled) for it to work.

 

[riser]

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.

 

[netnewbie]

Best answer selected by netnewbie.

 

[Mousemonkey]

This topic has been closed by Mousemonkey