Watch-Net, Watch-Aui, Watch-Tpe, Watch-Net-All - Sun Microsystems SPARCstation 20 Service Manual

watch-net, watch-aui, watch-
tpe, watch-net-all
The watch-net, watch-aui, watch-tpe, and watch-net-all commands
monitor broadcast Ethernet packets on the Ethernet cable(s) connected to the system.
Good packets received by the system are displayed by a period (.). Erroneous
packets received by the system are indicated with an X and the error description.
CODE EXAMPLE E-4
CODE EXAMPLE E-4
ok watch-net
Internal loopback test -- succeeded.
External loopback test -- Auto-selecting Ethernet cable I/F
Trying AUI
Received packet on AUI
Select cable - AUI
succeeded.
Looking for Ethernet packets.
'.' is a good packet. "X" is a bad packet.
Type any key to stop.
...............................................................
...............................................................
...................Framing error CRC error X...................
The SPARCstation 20 system has two types of on-board Ethernet interfaces: 10Base-
T (also called twisted-pair Ethernet or TPE) and 10Base5 (also called thick Ethernet
or AUI). Only one on-board interface may be connected at a time. The system
automatically selects which interface is connected and active.
The AUI port is first tested by transmitting data packets and checking for No Carrier
or response packets. If the AUI test fails, the TPE port is then tested.
This automatic selection occurs by typing watch-net.
the watch-net command output message.
tpe command output message.
command output message.
224 SPARCstation 20 Service Manual • July 1996
identifies the watch-net command output message.
watch-net Command Output Message
CODE EXAMPLE E-5
CODE EXAMPLE E-5
identifies the watch-
CODE EXAMPLE E-5
identifies the watch-net-all
identifies