2009/12/1 Jordan Kagan <jrkag...@gmail.com>:
> We are trying to write a Linux application that polls network devices and
> writes the responses to a .csv file on the local hard drive. Also, we need
> the input parameters to Net-SNMP to come from a separate config file.
> Lastly, there is a requirement to run multiple queries in just one socket
> connection, rather then just opening a socket, polling, and closing the
> socket for each query.
>
> Should we modify the agent that comes with Net-SNMP, or write a separate
> "sub agent" that we could easily integrate with the rest of the package? I
> read somewhere on the site that the first thing to look into may be MIB
> modules. Any guidance on this subject would be helpful.
I suggest that you treat this as two distinct requirements:
- Extending the Net-SNMP agent to report the particular values
that you wish to monitor (assuming it doesn't already)
- A (separate) client application, to poll SNMP agent(s)
and log the results.
For the second, it would definitely be worth looking as RRDTool
and similar/related software (e.g MRTG, Cacti, etc) - which may
already do most of what you need.
For the first - yes, you are looking at implementing a MIB module
(or modules) for any missing information. It doesn't really matter
whether this is a subagent, or extends the master agent directly.
The MIB module code would be the same in either case.
But I'd definitely decouple the two requirements.
Dave
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