HP procurve 420 Management And Configuration Manual page 85

The following example shows how to disable the Ethernet interface, force the
setting to 100 Mbps full duplex, and then re-enable it.
HP420(config)#interface ethernet
Enter Ethernet configuration commands, one per line.
HP420(if-ethernet)#shutdown
HP420(if-ethernet)#speed-duplex 100mf
HP420(if-ethernet)#no shutdown
HP420(if-ethernet)#
To display the current Ethernet interface status from the Exec level, use the
show interface ethernet command, as shown in the following example.
HP420#show interface ethernet
Ethernet Interface Information
===========================================================
IP Address
Subnet Mask
Default Gateway
Primary DNS
Secondary DNS
Speed-duplex
Admin status
Operational status
===========================================================
HP420#
Configuring Ethernet Interface Parameters
: 10.1.0.1
: 255.255.255.0
: 0.0.0.0
: 0.0.0.0
: 0.0.0.0
: 100Base-TX Full Duplex
: Up
: Up
Access Point Configuration
5-27