Subagent context question

[Mike Carr]

Jochen, thanks for the reply but it doesn't appear to work.  I've tried it 
on both a Windows 2000 and Linux (SuSE 7.2) build which return the same 
result "SNMP++ GetNext Error, SNMP: Cannot perform operation, Authorization 
Error".

After looking into the code it's failing because the function 
VacmAccessTable::getViewName is copmaring a prefix (I don't know what that 
is?) which is an empty string to a context that contains "subagent" (which I 
was expecting & understand).

By changing the code in the 'main' function of the master agent so that the 
'testGroup' has a prefix that matches the context it does however work.

i.e. changing the line to that below:
        vacm->addNewAccessEntry("testGroup", "subagent", // <--- changed 
this to "subagent"
				SecurityModel_USM, SecurityLevel_authPriv,
				match_prefix,
				"testView", "testView",
				"testView", storageType_nonVolatile);

Could you confirm whether this is indeed a bug or that I'm still 
mis-understanding something?


-----Original Message-----
>From : Jochen Katz <katz at agentpp.com>
To : everythingsfree at another.com
CC : agentpp-dl at agentpp.comDate : 18 February 2002 21:46:10
Subject : Re: Subagent context question
Hi,
>
>>I don't know what you mean by having the SNMP-COMMUNITY-MIB configured 
>>appropriately but that's probably because of my lack of understanding.
>
>in short: the community-mib can be used to translate snmpv2 communities
>to a snmpv3 username,context,... More details are in books or RFCs.
>
>>However, I do understand what you mean by using contexts and the “-cn“ 
>>option.  I've tried the following command:
>>
>>snmpGet 127.0.0.1 1.3.6.1.4.1.4976.6.1.1.2.224 -cnsubagent
>
>As “contexts“ are a snmpv3 feature, you have to use snmpv3. If you
>didn't delete or change the snmpv3 initialization, the following cammand
>will work:
>snmpNext 127.0.0.1 1.3.6.1.4.1.4976.6.1.1.2.224 -cnsubagent -v3 -md5
>-des -sl3 -snMD5DES -uaMD5DESUserAuthPassword -upMD5DESUserPrivPassword
>
>Kind regards,
>  Jochen
>


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