RB2011UAS-2HnD-IN ethernet port for netinstall

hi there,

for some reason my RB2011UAS-2HnD-IN can not boot up, the screen on show “loading kernel”.
therefore i wanna to do netinstall for this unit.
the quiestion is, what is the default ethernet port for netinstall ?
i try ether1, ether2, ether5 and ether10 still not working

the serial port also not working while the same serial cable working good on my CRS.

Tq

Problem solved !!
the port is ethernet1

i was not able to connect with netinstall due to the etnernet cable fault.

P