Sun Microsystems Ultra 1 Series Reference Manual page 23

Link Test
Enabled
(Default)
1
Ultra 1 Series
Link Test
Enabled
(Default)
1
Ultra 1 Series
Link Test
Disabled
(Reset)
0
Ultra 1 Series
Link Test
Disabled
(Reset)
0
Ultra 1 Series
Ensuring Host-Hub Communication
FIGURE 2-2
Two-Way Communication
Ultra 1 Series may boot
successfully, but with "lost
carrier" or "no carrier" error
messages.
Ultra 1 Series may boot
successfully, but other hosts
in the network cannot
communicate with the
Ultra 1 Series.
Two-Way Communication
Chapter 2
Link Test
Enabled
1
Hub
Link Test
Disabled
0
Hub
Link Test
Enabled
1
Hub
Link Test
Disabled
0
Hub
Twisted-Pair Ethernet Link Test 2-3