HP -UX 11i Installation And Update Manual page 137

Configuring Built-In PCI Networking
Manual Speed and Duplex Mode Configuration
performing manual configuration:
lanadmin -x ppa
To manually set the duplex mode of the interface, enter:
lanadmin -X mode ppa
where: mode can be any one of the following strings (fd or hd are
case-insensitive):
10fd =10 full-duplex
10hd =10 half-duplex
100fd =100 full-duplex
100hd =100 half-duplex
lanadmin -X auto_on ppa turns autonegotiation on.
The ppa is the physical point of attachment on HP-UX 10.30 or 11.0. On
HP-UX 10.20, use the nmid or Network Management ID of the card. You
can get the ppa ( nmid ) from the output of the lanscan command.
For example, if the ppa (nmid on HP-UX 10.20) of the 100Base-TX
interface is 5, this command sets the card to 10Mbits/s and full-duplex:
lanadmin -X 10fd 5
You must wait at least 11 seconds before attempting to use the specified
network interface.
If you want the Duplex Mode setting to be effective in all subsequent
reboots, you must create a script that includes the appropriate command
in the /sbin/init.d directory so it gets executed on each reboot. Manually
configuring the speed or duplex setting of a switch port on some switches
may disable that switch port from doing autonegotiation. Verify that
both the card and the switch port are operating in the same speed and
duplex mode as desired.
If you use manual configuration to change the card to a different speed
and duplex mode, you may need to turn autonegotiation on first before
the manual setting takes place.
NOTE Mismatches between the speed, autonegotiation, or duplex mode of the
card and switch will cause incorrect operation.
Appendix C 137