Sun Microsystems Enterprise 250 Owner's Manual page 302

For most PCI Ethernet cards, the link integrity test function can be enabled or
disabled with a hardware jumper on the PCI card, which you must set manually. (See
the documentation supplied with the card.) For the standard TPE and MII main logic
board ports, the link test is enabled or disabled through software, as shown below.
Remember also that the TPE and MII ports share the same circuitry and as a result,
only one port can be used at a time.
Note -
through a hardware jumper. In this case, refer to the hub installation or user manual
for details of how the test is implemented.
Determining the Device Name of the Ethernet Interface
To enable or disable the link integrity test for the standard Ethernet interface, or for a
PCI-based Ethernet interface, you must first know the device name of the desired
Ethernet interface. To list the device name:
1. Shut down the operating system and take the system to the ok prompt.
2. Determine the device name for the desired Ethernet interface:
Solution 1
Use this method while the operating system is running:
1. Become superuser.
2. Type:
#
eeprom nvramrc="probe-all install-console banner apply disable-link-pulse
device-name"
(Repeat for any additional device names.)
# eeprom "use-nvramrc?"=true
3. Reboot the system (when convenient) to make the changes effective.
Solution 2
Use this alternate method when the system is already in OpenBoot:
1. At the ok prompt, type:
Sun Enterprise 250 Server Owner's Guide ♦ Revision A, June 1998
268
Some hub designs permanently enable (or disable) the link integrity test