How to change adapter speed without rebooting 1) ifconfig enX down detach 3) make changes in smitty / devices / communications / Ethernet Adapter / Adapter / Change Show Charac../ ( smitty eadap ) or by chdev -l entX -a media_speed='100_Half_Duplex' 5) smitty tcpip inet /Change Show / (select interface) and change Current STATE to up. ( Don't do ifconfig enX up - this will put an IP address of 0.0.0.0 ) 6) mkdev -l inet0 (to activate all routes) Created Oct 2002 by Bruno Croft