CMMVC8099E The command failed because the target Ethernet port is set to non default MTU value.
Explanation
This error occurs when an attempt is made to configure a port for Remote Direct Memory Access (RDMA) clustering, but the MTU value of the port is not the default setting (1500).
User response
Use the cfgportip command to change the MTU value of the port to 1500, and then retry the command.