Sun Microsystems Netra T4 AC100 Service And System Reference Manual page 65

The following code examples identify the watch-net and the watch-net-all
output messages.
CODE EXAMPLE 4-5
{0} ok watch-net
Internal loopback test -- succeeded.
Link is -- up
Looking for Ethernet Packets.
'.' is a Good Packet. 'X' is a Bad Packet.
Type any key to stop.................................
CODE EXAMPLE 4-6
{0} ok watch-net-all
/pci@8,700000/network@5,1
Internal loopback test -- succeeded.
Link is -- up
Looking for Ethernet Packets.
'.' is a Good Packet. 'X' is a Bad Packet.
Type any key to stop.
4.5.2.5 Serial Port Protocol
The serial port protocol is now programmed as RS232 or RS423 using setenv rather
than by changing a jumper setting.
To change the serial ports to RS232, type:
ok setenv ttya-mode 9600,8,n,1,-,rs232
ok setenv ttyb-mode 9600,8,n,1,-,rs232
ok setenv auto-boot? false
ok reset-all
To change the serial ports to RS423, type:
ok setenv ttya-mode 9600,8,n,1,-,rs423
ok setenv ttyb-mode 9600,8,n,1,-,rs423
ok setenv auto-boot? false
ok reset-all
watch-net Diagnostic Output Message
watch-net-all Diagnostic Output Message
Chapter 4 Troubleshooting 4-13