How to set LAN Speed to Auto negotiable

In HP - UX we can change LAN Speed in Two ways one is temporarily and second is permanently.

For temporary base just use this command at command prompt

# lanadmin -X auto_on 0 --- Where 0 is PPA Number of NIC
This command does not need any reboot and this will work up to next reboot of the system.

For permanent base you have to change the script on hpigelanconf file and this file located at /etc/rc.config.d and find the following text

HP_IGELAN_INTERFACE_NAME[0]=lan0
HP_IGELAN_STATION_ADDRESS[0]=
HP_IGELAN_SPEED[0]=100fd
HP_IGELAN_MTU[0]=1500
HP_IGELAN_FLOW_CONTROL[0]=1
HP_IGELAN_AUTONEG[0]=0
HP_IGELAN_SEND_COAL_TICKS[0]=150
HP_IGELAN_RECV_COAL_TICKS[0]=0
HP_IGELAN_SEND_MAX_BUFS[0]=10
HP_IGELAN_RECV_MAX_BUFS[0]=1
HP_IGELAN_VMTU[0]=0
HP_IGELAN_SEND_CKO[0]=
HP_IGELAN_RECV_CKO[0]=
HP_IGELAN_DIAG_THRESH[0]=

and made the changes at the line HP_IGELAN_SPEED[0]=auto_on
This will fix the issue with LAN speed going to 100fd after reboot.