HP SNMP/XL User's Guide (36922-90036)

30 Chapter3

Using SNMPUTIL

SNMPCONTROL User Deﬁned Command

The SNMPCONTROL command allows you to control the HP SNMP/XL

subsystem. This command allows you to start and stop the subsystem

manually, enable the internal trace facility, gather version information,

obtain the current status of the subsystem, enter the help facility, dump

the internal data structures to a ﬂat-ascii ﬁle, and update the

subsystem conﬁguration.

To facilitate access to the SNMPCONTROL command, the

SNMPUDC.NET.SYS must be enabled for those users who require access.

This is accomplished by using the SETCATALOG command as follows:

SETCATALOG SNMPUDC.NET.SYS;SYSTEM.

Before the initial SETCATALOG you must make sure the TZ variable is

properly set for your local time zone by adding the following set of lines

to SNMPUDC.NET.SYS after the setvar opt ups(“!cmd”):

if (not(bound(TZ))) then

setvar TZ “timezonevariable”

endif

See Appendix D , “Time Zones,” for a list of commonly used time zones

and the TZ environment variable strings that correspond to them.

You must also have NM capability to issue the SNMPCONTROL command.

NOTE

Three clock parameters must be set to the correct value for the

SNMPCONTROL STATUS command to display the correct time. They

are the “hardware” clock, set vial CLKUTIL, the system start up clock,

and the SNMPCONTROL time zone variable TZ. CLKUTIL must be set

at the ISL prompt using Greenwich Mean Time (GMT). SNMP uses

GMT to print out the time, therefore if the “hardware” clock is not set or

set inaccurately the SNMPCONTROL STATUS will report the

incorrect time.

It should be noted that the CLKUTIL is linked to the system start up

clock, and when the CLKUTIL clock is changed the system start up

clock will change accordingly. The system start up clock is set by the

user when prompted by the console at start up. However, if the system

start up clock is changed during bookup, the CLKUTIL clock is not

affected. To verify that the correct time is set, ensure that the time

shown by SHOWTIME (displays system start up clock) and

SNMPCONTROL STATUS display match whenever a time change is

made.