Re: Question on SNMP TRAP MIB definition

2009/4/21 dhaval sanghvi <[email protected]>:
> MIB for trap(this is just an example)


> // TRAP Definition
>
> tapeAlertTrap280                TRAP-TYPE
>        ENTERPRISE      tapeAlert
>        VARIABLES       {
>                                    hbaNumber,
>                                    hbaChannel
>                                  }
>        DESCRIPTION
>        "A library operation has been attempted that is invalid at this
> time."

That looks suspiciously like an SMIv1 definition.
Please don't use SMIv1 - it was superceded by SMIv2 several years ago.

Current MIB files should define notifications using NOTIFICATION-TYPE
and they would be assigned an OID, just as for any other MIB object.



> Now here, A trap is send with 2 varbinds. If i don't define the above
> varbind as hbaNumer or hbaChannel , does it make any difference?

What do you mean by "the above varbind" ?

If you are talking about the value for the snmpTrapOID.0 varbind,
then that would be the OID of your notification MIB object.
The payload varbinds would have the same OID/value as if they
were the result of a GET request.



> I just want to know if we don't define the varbionds we use in traps, what
> could happen?

The trap recipient wouldn't have the faintest idea what you were
trying to report.


> Does masteragent look into varbinds and its respective oid
> value and does a get on localagent ?

No.

> How does masteragent react to snmptrap with defined/undefined
> varbinds send from localagent?

It passes on whatever it's given by the subagent.
If you give it garbage, then the trap recipient will receive garbage.


Dave

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