Sun Microsystems SPARCstation 4, Service Manual

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D-4 SPARCstation 4/Xterminal 1 Service Manual • January 1995
The following screen gives you an example of a
watch-clock
test.
D.1.4 watch-net, watch-aui, watch-tpe, and watch-net-
all
These tests monitor broadcast Ethernet packets on the Ethernet cable(s) connected to
the system. Good packets received by the system are indicated by a period (
.
)
displayed on the screen. Errors are indicated with an
X
and the error description.
For example:
Your system has two types of Ethernet interfaces, 10BaseT (also called twisted-pair
Ethernet or TPE) and 10Base5 (also called thick Ethernet or AUI). Only one Ethernet
interface may be connected at a time. The system can automatically select which
interface is connected and active.
The AUI port is first tested by transmitting packets and checking for “no carrier” or
response packets. If the AUI test fails, the TPE port is then tested.
ok watch-clock
Watching the ‘seconds’ register of the real-time clock chip.
It should be ‘ticking’ once a second.
Type any key to stop
41
ok watch-net
Using AUI Ethernet Interface
Lance register test -- succeeded
Internal loopback test -- succeeded
External loopback test -- Lost Carrier (transceiver cable
problem?) send failed
Using TP Ethernet Interface
Lance register test -- succeeded
Internal loopback test -- succeeded
External loopback test -- succeeded
Looking for Ethernet packets.
’.’ is a good packet. "X" is a bad packet.
Type any key to stop.
................................................................
................................................................
.................Framing error CRC error X...................