Adding route by management interface for syslog server

I means by non routable that I wasn't able to specify management interface or IP address of management's gateway when I tried to add route into GUI interface.

 

 

I tried nigpipe command, and it works for my syslog data. But my NTP packets still goes by my selfip address instead of my management address. Is this supposed to be the same ?

 

 

Thank you very much for your help

 

 

NOTE : What's the difference between Bigpipe commands and tmsh commands ?