About Automatic Server Restart; About Automatic System Restoration - Sun Microsystems Sun Fire V445 Server Administration Manual

Start the watch-net diagnostic test by typing the watch-net command at the ok
prompt. For the watch-net-all diagnostic test, type watch-net-all at the ok
prompt.
CODE EXAMPLE 8-18
{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 8-19
{0} ok watch-net-all
/pci@1f,0/pci@1,1/network@c,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.

About Automatic Server Restart

Note – Automatic Server Restart is not the same as Automatic System Restoration
(ASR), which the Sun Fire V445 server also supports.
Automatic Server Restart is a functional part of ALOM. It monitors the Solaris OS
while it is running and, by default, captures cpu register and memory
contents to the dump-device using the firmware level sync command.
ALOM uses a watchdog process to monitor only the kernel. ALOM will not restart
the server if a process hangs and the kernel is still running. The ALOM watchdog
parameters for the watchdog patting interval and watchdog timeout are not user
configurable.
208 Sun Fire V445 Server Administration Guide • September 2007
watch-net Diagnostic Output Message
watch-net-all Diagnostic Output Message