Hi,
   More on the inform issue in v3. I decided to use "snmptrap" and
"snmptrapd" both running 5.5 and here are the details. I am not sure
whether this is a config issue or there is some issue with inform in
v3.

I have snmptrad running on the local host.

I sent an inform message to the trap-server with the following command:

$ sudo snmptrap -Ci -v 3 -e 0x80001f888085b94c4882d8bc4b -l noauth -u
inter localhost 0 linkUp.0
t->local =
t->remote =
sock = 3 flags = 0x0
local_addr: 0.0.0.0 0.0.0.0 162
snmpinform: Timeout (Sub-id not found: (top) -> linkUp)

Since snmptrap did not complain, it did send the message out and did
not get response from snmptrapd.

At the snmptrapd, with some debugs enabled, I am getting the following errors:

snmp_parse: Parsed SNMPv3 message (secName:inter,
secLevel:noAuthNoPriv): USM unknown engineID
snmp_parse: Parsed SNMPv3 message (secName:inter,
secLevel:noAuthNoPriv): USM unknown engineID
snmp_parse: Parsed SNMPv3 message (secName:inter,
secLevel:noAuthNoPriv): USM unknown security name (no such user
exists)

Following is my snmptrapd.conf file:

"
# snmptrapd.conf

doNotRetainNotificationLogs yes

#authCommunity log,execute,net public
authCommunity log,execute   public

authUser log,execute    inter
createUser -e 0x80001f888085b94c4882d8bc4b inter

traphandle .1.3.6.1.6.3.1.1.5.3 log
"

Is there anything missing in the config file?

I am looking forward to any help on this issue.

Thanks,
Fatima

---------- Forwarded message ----------
From: Fatima Peter <fatima.pe...@gmail.com>
Date: Wed, Apr 7, 2010 at 1:20 PM
Subject: Re: Help in getting inform work in v3
To: net-snmp-coders@lists.sourceforge.net


I meant:
snmpd-trapsess -v 3 -t 1 -r 3 -e 0x80001f888085b94c4882d8bc4b -l
noauth -u inter -Ci 10.10.16.118:162

or

snmpd-trapsess -v 3 -t 1 -r 3 -e 0x80001f888085b94c4882d8bc4b -l
noauth -u inter -n inter -Ci 10.10.16.118:162

Here is my snmptrapd.conf file:
"
# snmptrapd.conf

doNotRetainNotificationLogs yes

#authCommunity log,execute,net public
authCommunity log,execute   public

authUser log,execute    inter

createUser -e 0x80001f888085b94c4882d8bc4b inter

traphandle .1.3.6.1.6.3.1.1.5.3 log
"

I invoke snmptrapd like below to accept informs:
sudo /usr/local/sbin/snmptrapd -Dsnmptrapd -C -c /etc/snmptrapd.conf
-Lf <filename>

Thanks,
Fatima

On Wed, Apr 7, 2010 at 1:15 PM, Fatima Peter <fatima.pe...@gmail.com> wrote:
> Hello,
>   We are using net-snmp version 5.5. I have v1/v2c/v3 traps working
> fine and inform also seems to work well in v2c. We have tested it with
> snmptrapd as well as with a 3rd party vendor tool.
>
>   I seem to have problem getting inform work in v3. The informRequest
> goes out to snmptrapd which immediately sends a report back. We have
> captured this exchange in wireshark. Following is how trap is
> configured:
>
> snmptrap -v 3 -t 1 -r 3 -e 0x80001f888085b94c4882d8bc4b -l noauth -u
> inter -n inter -Ci <ipaddr>:162
>
>
> Though the engineID in Inform request matches the authoratative
> engineID in the report, from what I can see it seems to fail because
> of "unknwon engineID"
> reports says:
>   error-status: noError
>   error-Index: 0
>
> Is there anything wrong in the way we configure the trap? I have tried
> without the "-n <name>" also.
>
> I would really appreciate your help in resolving the issue.
>
> Thanks in advance,
> Fatima
>

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