We use the serial port to connect SBC and boot form BIOS. We want to change the long file name when we upgrate the SBC software.
We use TFTP to update the SBC. When it show the promp "target name (tn):". We type "SessionEngine2300-VRP3.30-0337.bin" and SBC respone "too big - maximum field width = 20."
When upgrade procedure provided by BIOS, the file name is less than 20 words. If we use the file that is name more than 20 words,
we can use the upgrade procedure provided by network. (telnet).