Re: timeticks in second and send a easy trap

    [ First - *please* don't mail me privately, without copying
     any responses to the mailing list.  I don't have the time
     or inclination to offer private, unpaid, SNMP consultancy.
     Keep discussions to the list, where others can both learn
     and offer advice.  Thanks.   ]


On 17/12/2007, Tako Chang <[email protected]> wrote:
> > > I find that TimeTicks is a basic type in snmp
> > > but it uses "1/100 second" as its unit.
> > >
> >    Simply define an INTEGER-valued object, and specify
> > a UNITS clause of "seconds".
> >
> > See (for example):
> >     IP_MIB::ipReasmTimeout
>
> I querry ipReasmTimeout.0 and get IP-MIB::ipReasmTimeout.0 = INTEGER: 0
> Actually, I want it to be parsed into a readable format like ?? Days ?? hr
> ?? min ??sec

That's something you will have to implement for yourself.
As far as basic SNMP is concerned, you have a choice
between the standard type TickTicks (in 1/100s), which
most toolkit should be able to interpret.
   Or else an INTEGER-based value, which you will need
to convert into a suitable printable format yourself.   There's
nothing standard that would give you that for one-second
measurement.


   The closest would be the DateAndTime pseudo-type,
though this really refers to clock time, rather than time
intervals.




> > > I define a trap in my MIB
> >
> > What is the actualy definition of the trap/notification?

>
> flagEnable     OBJECT-TYPE
> SYNTAX       INTEGER{
>              enable(1),
>              disable(2)
> }
> ACCESS        read-write
> STATUS       mandatory
> ::= { testMIB 1 }
>
>  demoTrap     TRAP-TYPE
> ENTERPRISE      ipavSTBCommonTrap
> VARIABLES       {
>            flagEnable
> }
> DESCRIPTION     "Send a message to the manager when the DHCP setting is
> chaged"
> ::= 1

So this MIB is written in SMIv1?
That's pretty much obsolete by now.  You should really be looking at
writing MIBs in SMIv2 (i.e. NOTIFICATION-TYPE definitions)




> flagEnable is a global variable and can be access by MY_API
> My_registercb( testTrap() ) will register a callback to MY_API and when the
> value of flagEnable
> is changed by MY_API,  testTrap() will be executed.
>
> so, I plan to write send_easy_trap() in this function,

"send_easy_trap" isn't really sufficient for your requirements here.
You should probably look at using 'send_enterprise_trap_vars()'
in order to specify your Enterprise OID value.

Dave

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