[AGENT++] How to use ProxyForwarder to forward requests to external snmp-daemon or another oid?

[Frank Fock]

Hi Jens,

You can try out mib_proxy.[h|cpp]. AgentX is already
implemented, thus it can be used out-of-the-box.

Best regards,
Frank

On 27.10.2010 10:12, Jens Rehsack wrote:
> 2010/10/27 Frank Fock<fock at agentpp.com>:
>> Hi Jens,
>>
>> On 26.10.2010 19:09, Jens Rehsack wrote:
>>> Hi,
>>>
>>> while writing smart-snmpd we have to make a decision: implement some
>>> currently used
>>> netsnmp ucd-mibs or use the ProxyForwarder?
>>>
>>
>> I would recommend using AgentX (AgentX++ master + net-snmp subagent).
>> With that, you can seamless migrate MIB modules into your
>> smart-snmpd.
>
> I'm talking about 4 or 5 values from the UC Davis MIB - not more.
> Developing and integrating an AgentX for that is overkill ;)
>
> All AgentX modules will be plugged in as external commands
> using a pipe and update the agent's data in a separate thread.
>
>>> I personally would prefer the ProxyForwarder - but I couldn't figure
>>> out how to set it up
>>> which requests shall be forwarded to
>>> a) another oid, and
>>> b) an external (2nd) snmpd on the same host but another port
>>
>> The ProxyForwarder (as defined by the RFC3413) cannot
>> be used because it forwards all requests to another agent
>> based on a community or context engine ID.
>
> We need it for SNMPv2c requests (but the Agent runs as
> SNMPv3 Agent). This would mean, we can only forward all
> or nothing.
>
>> You cannot forward by a subtree OID.
>>
>> Although AGENT++ provides also forwarding by OID (subtree)
>> I would not recommend it, AgentX provides a better
>> integration regarding performance and flexibility.
>
> That would be the easiest implementation for us - performance isn't
> a problem for those 5 values. It would be nice to know how to do
> that (or better: where to read how to do).
>
>> Best regards,
>> Frank
>
> Best regards,
> Jens
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