Additional information:

• product name: JovianDSS / DSS V7
• product version: all / version 
• build: all / version 

Problem:

When trying to set the MTU value of 9000, it claims it's a wrong value.

Symptoms:

Errors or messages:

Trying to enable jumbo frames on an Ethernet controller from the console:

CTRL-ALT-W > Tuning Options > Jumbo Frames Config

Solution:

You may want to try a smaller value. It is best to consult Ethernet controller vendor documentation or support for the information on the maximum allowed MTU size.