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
<m...@ellisonsoftware.com <mailto:m...@ellisonsoftware.com>> 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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