Re: Fwd: NetSNMP configuration of SNMP managers

Hi Mark,
i am configuring my snmp agent to send notifications to  multiple snmp 
manager,using the  tables snmpNotifyTable snmpNotifyFilterProfileTable 
snmpNotifyFilterTable (RFC 3413), snmpTargetAddrTable 
snmpTargetParamsTable (RFC 3413).
Below you have said that :
Now, for sending notifications using the NetSNMP libraries, you might 
use the send_v2trap() or send_trap_pdu() routine contained in the 
~agent/agent_trap.c code that is part of the libnetsnmpagent library.
Now my question is :
To send notifications to the manager i should be knowing their EngineID 
,boots and time . So using send_v2trap() or send_trap_pdu() can i do a 
snmpget request from the snmp agent to the manager to fetch all these 
information ( EngineID ,boots and time )? Or is there any other way to 
know these information?

Regards
kusuma
V Pura wrote:
> Hi Mark,
>  
> Thanks a lot for the info. It helps a lot in understanding the usage 
> of the different MIBs for the v3 support.
>  
> V. Pura
>
> On Sat, Mar 21, 2009 at 6:44 PM, Mark Ellison 
> <[email protected] <mailto:[email protected]>> wrote:
>
>     Hi V,
>
>
>     On 03/20/2009 11:08 PM, V Pura wrote:
>
>          Actually we don't need to have a NetSNMP GUI, but would like
>         to render a GUI based manager configuration, so that the
>         administrator can  directly add the new managers without
>         modifying any config files.  So wanted to know if there was
>         any API available which would be used with our GUI code.
>
>     Okay.  I understand you do not want to directly modify the
>     Net-SNMP configuration files.  The SNMP and the MIB modules
>     supported by Net-SNMP are the API you want to use.
>
>          What if we create a manager table in the database and store
>         all the relevant data in it and retrieve it in local cache for
>         sending notifications using the NetSNMP libraries. Would there
>         be any problems with this scenario?
>
>
>     While I don't have a complete understanding of the overall
>     application you intend to build, it does occur to me that it would
>     simpler and more expedient to simply use SNMP Set-Requests to
>     insert appropriate rows in the usmUserTable (RFC 3414),
>     vacmSecurityToGroupTable vacmAccessTable vacmViewTreeFamilyTable
>     (RFC 3415) when adding a manager.  You would also want to add
>     appropriate rows in the snmpNotifyTable
>     snmpNotifyFilterProfileTable snmpNotifyFilterTable (RFC 3413),
>     snmpTargetAddrTable snmpTargetParamsTable (RFC 3413) for sending
>     notifications to a manager.
>
>     Net-SNMP takes care of the rest.
>
>     You will find examples of  rows for these tables in the Appendix
>     sections of the corresponding RFCs.  The complete set of IETF RFCs
>     are available via http://www.rfc-editor.org/rfcsearch.html of
>     course- try typing  STD62 into the search box and click 'SEARCH'
>     to get links to the set of RFCs comprising the SNMPv3 standard.
>
>     I think that after reviewing the above information, you will come
>     to understand that the above tables indeed comprise the 'manager
>     table in the database'.
>
>     Now, for sending notifications using the NetSNMP libraries, you
>     might use the send_v2trap() or send_trap_pdu() routine contained
>     in the ~agent/agent_trap.c code that is part of the
>     libnetsnmpagent library.
>
>
>     Regards,
>
>     Mark
>     http://EllisonSoftware.com <http://ellisonsoftware.com/>
>
>
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easily build your RIAs with Flex Builder, the Eclipse(TM)based development
software that enables intelligent coding and step-through debugging.
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