Sun Microsystems Sun Fire X4200 - Manual (Page 124)

9-18 Sun Fire X4100 and Sun Fire X4200 Servers System Management Guide • December 2005
When the service processor reboots, the SP clock is set to Thu Jan 1 00:00:00 UTC
1970. The SP reboots as a result of the following:
■ A complete system unplug/replug power cycle
■ An IPMI command; for example, mc reset cold
■ A command-line interface (CLI) command; for example, reset /SP
■ ILOM web GUI operation; for example, from the Maintenance tab, select Reset SP
■ An SP firmware upgrade
After an SP reboot, the SP clock is changed by the following:
■ When the host is booted – The host's BIOS unconditionally sets the SP time to that
indicated by the host's RTC. The host's RTC is set by the following operations:
■ When the host's CMOS is cleared as a result of changing the host's RTC battery
or inserting the CMOS-clear jumper on the motherboard. The host's RTC starts
at Jan 1 00:01:00 2002.
■ When the host's operating system sets the host's RTC. The BIOS does not
consider time zones. Solaris and Linux software respect time zones and will set
the system clock to UTC. Therefore, after the OS adjusts the RTC, the time set
by the BIOS will be UTC. Microsoft Windows software does not respect time
zones and sets the system clock to local time. Therefore, after the OS adjusts
the RTC, the time set by the BIOS will be local time.
■ When the users sets the RTC using the host BIOS Setup screen.
■ Continuously via NTP if NTP is enabled on the SP – NTP jumping is enabled to
recover quickly from an erroneous update from the BIOS or user. NTP servers
provide UTC time. Therefore, if NTP is enabled on the SP, the SP clock will be in
UTC.
■ Via the CLI, ILOM web GUI and IPMI
9.8 How to Enable SNMP Settings and View
SNMP Users
This section explains how to enable monitoring and management of the Sun Fire
X4100 or Sun Fire X4200 server using the Simple Network Management Protocol
(SNMP). The Sun Fire X4100 or Sun Fire X4200 server supports SNMP versions 1, 2c,
and 3. SNMP v3, which is the preferred version to use for secure operations, is
enabled by default. The ILOM Service Processor has a preinstalled SNMP agent that
enables you to manage the server using the service processor. You can use any
management application that supports SNMP to manage the Sun Fire X4100 or Sun
Fire X4200 server.