I am configuring a digi Etherlite16 for hpux 11i.
Now I successfully installed A5856A_11.00 (version 1.3.6)
Etherlite ip address configuration is also OK. i can ping to that IP.
Then i configured with drpadmin. my /etc/conf/digi/drp.conf says,…
0 192.168.128.112 16 a 01 771 never 1027
Are you able to display the port settings using ditty -a?
ditty -a cux##
Also, the forcedcd setting typically does not apply to EtherLite units (usually portservers). If you do not have DCD wired on the cable, you will want to be sure to use the /dev/cux## (non-blocking) devices instead of the /dev/ttyx## (blocking) devices.