Automatic Server Restart - Sun Microsystems Fire V240 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.
FIGURE 6-4
{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.................................
FIGURE 6-5
{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.

Automatic Server Restart

Note – Automatic Server Restart is not the same as Automatic System Recovery
(ASR), which the Sun Fire V210 and V240 servers also support.
Automatic Server Restart is a component of ALOM. It monitors the Solaris operating
environment while it is running and, by default, syncs the filesystems and restarts
the server if it hangs.
ALOM uses a watchdog process to monitor the kernel only. 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.
80 Sun Fire V210 and V240 Servers Administration Guide • April 2003
watch-net Diagnostic Output Message
watch-net-all Diagnostic Output Message