[snmp] SNMP V2 Traps

[Brian Jewell]

Birgit,

Thanks again for your help.

--Brian

-----Original Message-----
From: snmp-bounces at snmp.westhawk.co.uk
[mailto:snmp-bounces at snmp.westhawk.co.uk] On Behalf Of Birgit Arkesteijn
Sent: Thursday, August 30, 2007 3:34 AM
To: List for discussion of the Westhawk SNMP stack
Subject: Re: [snmp] SNMP V2 Traps

Hi Brian,

In Trapv2 the notifications are part of the varbind list.

Have a look at the javadoc for
uk.co.westhawk.snmp.stack.TrapPduv2

Reading http://www.ietf.org/rfc/rfc3418.txt,
I think that the Enterprise field in Trapv1 corresponds with the 
(optional?) snmpTrapEnterprise OID in the varbind list of Trapv2.

The description says:
   "The authoritative identification of the enterprise
   associated with the trap currently being sent. When an
   SNMP proxy agent is mapping an RFC1157 Trap-PDU
   into a SNMPv2-Trap-PDU, this variable occurs as the
   last varbind."


See also "4.2.6.  The SNMPv2-Trap-PDU" of
http://www.ietf.org/rfc/rfc3416.txt

I hope this helps.

Cheers, Birgit


On 29/08/07 22:54, Brian Jewell wrote:
> Hi,
> 
>  
> 
> I just wondered if you are familiar with an effective means of processing
> SNMP V2 traps?
> 
>  
> 
> With V1 traps the "Enterprise" field, which contains an OID, can be used
to
> associate a trap with a MIB definition. The TrapPduv1.getEnterprise()
method
> will obtain this OID.
> 
>  
> 
> However, with an SNMP V2 trap, there is no Enterprise field, and no
> TrapPduv2 methods available (as far as I can tell) to somehow identify
which
> trap in a MIB has been received.
> 
>  
> 
> I was wondering if you are familiar with a common approach for solving the
> issue?
> 
>  
> 
> Thanks in advance for your help.
> 
>  
> 
> --Brian
> 
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> snmp at snmp.westhawk.co.uk
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-- 
-- Birgit Arkesteijn, birgit at westhawk.co.uk,
-- Westhawk Ltd, Albion Wharf, 19 Albion Street, Manchester M1 5LN, UK
-- Company no: 1769350
-- Registered Office:
-- 15 London Road, Stockton Heath, Warrington WA4 6SJ. UK.
-- tel.: +44 (0)161 237 0660
-- <URL: http://www.westhawk.co.uk>
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