Re: v2 notifications as v1 traps

Thanks very much. That's all correct, of course; I'd skimmed right
over paragraph 4 section 3.2 of that rfc somehow, and didn't go back
to re-check it. Much appreciated!

Cheers,
-Dan


2008/9/10 Mike Ayers <[email protected]>:
>
>
>> -----Original Message-----
>> From: [email protected]
>> [mailto:[email protected]] On
>> Behalf Of dan anderson
>> Sent: Wednesday, September 10, 2008 3:53 PM
>> To: [email protected]
>> Subject: Re: v2 notifications as v1 traps
>>
>> Nobody knows? Hmm. Would anyone be able to start and stop a snmpd with
>> a v1 trap sink registered (probably just with snmptrapd), and let me
>> know the values of enterpriseOID, specifictype, and generictype? It'd
>> be very useful, and I'd appreciate it very much.
>
>        For
>
> $ snmptrapd -C -c ./snmptrapd.conf -Le -f -F '%N %w %q\n'
>
>        I get:
>
> NET-SNMP-MIB::netSnmpNotificationPrefix 6 NET-SNMP-AGENT-MIB::nsNotifyShutdown
>
>        ...so you're correctly, IIRC... mostly.
>
>> > When sending v2 notifications as v1 traps, is it correct to set the
>> > enterprise OID to the parent of the trap,
>
>        If the parent of the *notification* is a "0" value, then use the parent of the parent of the notification, else use the parent of the notification.  I suggest you read RFC2576, or its latest update, for details.
>
>> > the generic type to
>> > enterprise,
>
>        Yes.
>
>> > and the specific type to the last digit of the
>> > notification's oid?
>
>        Correct.
>
>> > Eg. for ucdShutdown, would it be enterpriseOID: ucdavis.ucdTraps,
>> > generic: 6 (enterprise-specific), specific: 2 (ucdShutdown)?
>
>        That is correct, I think, but note the difference I note above.  Basically, SNMPv1 enterprise traps were generally of the form enterprise.trapsId.trapNum, whereas SNMPv3 (SMIv2) notifications (aka SNMPv2 notifications) are recommended to be, and usually are, of the form enterprise.trapsId.0.trapNum for coexistence reasons.
>
>        Dave will now kindly step in and tell you what I got wrong.
>
>
>        HTH,
>
> Mike
>

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