Re: SNMPv3: two request needed to get response(msgAuth oritativeEngineTime)?

> -----Ursprüngliche Nachricht-----
> Von: "Dave Shield" <[email protected]>
> Gesendet: 22.04.09 10:51:24
> An: mike one <[email protected]>
> CC: "[email protected]" <[email protected]>
> Betreff: Re: SNMPv3: two request needed to get response(msgAuthoritativeEngineTime)?


> 2009/4/22 mike one <[email protected]>:
> > The question is how to configure my management application (NetSnmp on the RedHat server)
> > that after the first snmpget request all the following snmpget requests are authorized, without the need for another probe.
> > So that after first snmpget request (probe) the second and all following snmpget requests will be send with correct engineBoot/Time values.
> 
> If you are using separate "snmpget" shell commands for each request,
> then these will indeed be regarded as completely separate, and will
> probe for the boot/time values every time.
> 
> If you code this your management application as a single process,
> and use C-level calls to send the GET requests (using the same
> netsnmp_session structure), then this will remember and reuse
> the boot/time values.   Thus avoiding the re-probe.
> 
> 
> > Need snmpd to be run on the server for that ?
> 
> No - that is completely irrelevant.
> You are talking to the agent on the switch, not the agent on the local system.
> 
> 
> 
> > The switches supports snmpEnableAuthenTraps and suppress the generation of authenticationFailure notifications.
> > But that won't solve my case. It's still needed two snmpget requests to get response.
> 
> That's because you are throwing away the information from the first request,
> rather than keeping it for the second.
> 
> Use a single netsnmp_session structure to send both requests,
> and everything should be fine.
> 
> Dave
> 



Hi Dave,

> Use a single netsnmp_session structure to send both requests,
> and everything should be fine.

Where can I find this? Sorry for stupid question


I just thought that it can be adjusted with the aid of netsnmp tools inside, withot extra C-programming.
Means this that I can not use Nagios as monitoring server for the switches via SNMPv3, because 
Nagios uses external scripts (ex. check_snmp uses snmpget from NET-SNMP package) and have not a single process for all the time? 

Thanks!
mike

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