[SNMP4J] SNMP Manager re-installation no longer authenticating

[Clement_Pellerin at ibi.com]

I stand corrected. The SNMPv3 spec uses "less-than" comparisons which assumes the boot count is indeed a monotonically increasing number.

On the other hand, reverting the boot count or letting it roll over has the same effect on the communication partners. The partners need to redo time synchronization.

I would expect the cached authoritativeEngineBoots are not persisted, so a simple reboot of SNMP4J would cause time synchronization again and fix the problem. Is this true?


-----Original Message-----
From: snmp4j-bounces at agentpp.org [mailto:snmp4j-bounces at agentpp.org] On Behalf Of Frank Fock
Sent: Monday, January 18, 2010 2:04 PM
To: snmp4j at agentpp.org
Subject: Re: [SNMP4J] SNMP Manager re-installation no longer authenticating


The engineBoots counter needs to monotonically increasing.
There is no time limit. The roll-over is handled
differently.

On 18.01.2010 18:17, Clement_Pellerin at ibi.com wrote:
> I don't think the boot count needs to be monotonically increasing. I believe the boot count only needs to be unique within the time window (maybe 2 minutes). Eventually any boot count will roll over and the application needs to handle that case. Are you sure it is related to the boot count?
>
> Error 1414 is:  "SNMPv3: USM: Address error"
>
>
> -----Original Message-----
> From: snmp4j-bounces at agentpp.org [mailto:snmp4j-bounces at agentpp.org] On Behalf Of Aidan Diffey
> Sent: Monday, January 18, 2010 10:31 AM
> To: snmp4j at agentpp.org
> Subject: [SNMP4J] SNMP Manager re-installation no longer authenticating
>
> Hello.
>
> I have an SNMP device which is connected to a manager (A J2EE application).
> They are both talking to each other using SNMP V3.  I have re-installed the
> manager which involved reloading a database.
> This has reset the engine boot count on the manager from 21 back to 1. Since
> then, I am receiving a -1414 error from SNMP4J.
>
> Is there something in SNMP4J that requires the engine boots to be
> incremented in order for authentication to take place?
>
> How would I get the devices talking again after rebuilding the manager
> database?
>
> Kind Regards
> _______________________________________________
> SNMP4J mailing list
> SNMP4J at agentpp.org
> http://lists.agentpp.org/mailman/listinfo/snmp4j
> _______________________________________________
> SNMP4J mailing list
> SNMP4J at agentpp.org
> http://lists.agentpp.org/mailman/listinfo/snmp4j

-- 
AGENT++
http://www.agentpp.com
http://www.snmp4j.com
http://www.mibexplorer.com
http://www.mibdesigner.com

_______________________________________________
SNMP4J mailing list
SNMP4J at agentpp.org
http://lists.agentpp.org/mailman/listinfo/snmp4j