4-6 UltraEnterprise 6000/5000/4000 Systems Manual—November 1996
4
The Graphics I/O board includes one SYSIO ASIC that provides a single SBus
for two plug-in SBus cards, two fiber interfaces, and the on-board devices
(10/100Mbyte TPE and Single-ended Fast/Wide SCSI).
4.5.1 tpe-link-test? Variable
If the system cannot communicate with a network, the tpe-link-test?
settings for the on-board Ethernet ports may be incompatible with the setting
at the network hub. The tpe-link-test? variable is set separately for the on-
board Ethernet port on each I/O board. The variable is also set for any SBus
Ethernet cards in the system.
If you have problems verifying connection between Sun equipment and your
hub, verify that your hub also has the link test function enabled.
See Section 8.5.3.2, “printenv Command,” for information about displaying
configuration variables and Section8.6.1, “Failure of Network
Communications,” for additional tpe-link-test? information. Also, refer to
the manual provided with your hub.