Re: [Pysnmp-dev] Doubt regarding SNMPv3 Agent setup using PYSNMP

[Ilya E. <il...@gl...>]

Mohammed,

Your Manager might be querying using authentication option (e.g. 
authNoPriv or authPriv) while your Agent does not have a user configured 
with authentication option enabled. So, doublecheck that.

BTW, in your example there seems to be a typo in username - 'test-uset'
instead of 'test-user'.

-ilya

>               Just one help needed regarding SNMPv3 set for agent. I
> used the example given in the link:
>
> http://pysnmp.sourceforge.net/examples/4.x/v3arch/agent/cmdrsp.html
>
> Though v1, v2 are working fine as I have tested with (Free PowerSNMP
> Manager) by discovering and sending queries. But when I tried doing so
> with SNMPv3 set up by configuring noAuthNoPriv (no authentication, no
> privacy), Manager is failing to discover the agent and agent throwing
> error while discovery message is being processed on agent. The error is
>
> Traceback (most recent call last):
>
> /pysnmp/v4/carrier/asynsock/dispatch.py", line 60, in runDispatcher
>
> :              :              :
>
> :              :              :
>
> pysnmp/v4/carrier/asynsock/dgram/base.py", line .., in handle_read
>
> pysnmp/v4/carrier/base.py", line .., in _cbFun
>
>  pysnmp/v4/entity/engine.py", line .., in __receiveMessageCbFun
>
>   pysnmp/v4/proto/rfc3412.py", line ..., in receiveMessage
>
>    pysnmp/v4/proto/mpmod/rfc3412.py", line ..., in prepareDataElements
>
>     pysnmp/v4/proto/secmod/rfc3414/service.py", line ..., in
> processIncomingMsg
>
>      pysnmp/v4/proto/secmod/rfc3414/auth/base.py", line .., in
> authenticateIncomingMsg
>
> ProtocolError: no authentication
>
>
>
> I modified the example only for ip address, used no authentication and
> no privacy for v3 as shown here:
>
> config.addV3User(
>
>     snmpEngine, 'test-uset',
>
>     config.usmNoAuthProtocol, None,
>
>     config.usmNoPrivProtocol, None
>
>     )
>
> :
>
> config.addRwUser(snmpEngine, 3, 'test-user', 'noAuthNoPriv', (1,3,6)) #
> v3
>
> And for discovery, I have used the following configuration on SNMP
> Manager (powerSNMP Manager):
> SNMP Version: Three
> Security-level : None (other options: auth, authpriv)
> Username: test-user
>
> Please have a look and suggest me where I am missing, or let me know if
> my setup/configurations are not OK.