HP-UX 11i Version 1 Installation and Update Guide, June 2003

Configuring Built-In PCI Networking
PCI 10/100Base-TX and 100Base-FX/9000
Appendix D 205
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.
Setting Speed and Duplex Mode at Boot Time (workstation only)
With this method you may set both the speed and duplex mode of the
interface, and have this setting be in effect across subsequent system
reboots.
To access the LAN configuration commands: From the boot console,
select the
Configuration Menu and from there select LAN Configuration.
From this menu you can configure and display the current mode of
the10/100 Base-T interface using these commands:
LanConfig Display current configuration settings.
LanConfig 10/Half_dx Operate in 10 Mbit/s, half-duplex mode.
LanConfig 100/Half_dx Operate in 100 Mbit/s, half-duplex mode.
LanConfig 10/Full_dx Operate in 10 Mbit/s, full-duplex mode.
LanConfig 100/Full_dx Operate in 100 Mbit/s, full-duplex mode.
LanConfig AUTO_detect (default) Enable auto-negotiation.
If you don't use this method, the system boots up with the default setting
AUTO_Detect.
Autonegotiation and Auto-sensing
Autonegotiation enables devices sharing a link segment to operate at the
optimal mode: 10Base-T or 100Base-TX and half- or full-duplex modes.
If the PCI 10/100Base-TX/9000 card is connected to a device, such as a
switch, that is autonegotiating, the PCI card will autonegotiate with the
device to mutually determine the highest possible speed and duplex
settings.