RE: net-snmp as gateway

Hi Dave,

Thanks a lot for your fast reply! :-)

Sorry, but I still don't see the solution.

So, I have my Cricket instance configured for monitoring one parameter in 2 hosts (maybe I should post that in the Cricket's mailing list too). That means I have something like:

[Cricket config]
datasource param1-host1
    ds-source        = snmp://private@localhost:161/<oid for param1>

datasource param1-host2
    ds-source        = snmp://private@localhost:161/<oid for param1>

So, I send the same OID to the same SNMP instance! That means it has no way to know that the first goes to host1 and the second to host2.

Let's suppose I have configured /etc/hosts

127.0.0.1	localhost host1 host2

and Cricket like:

[Cricket config]
datasource param-host1
    ds-source        = snmp://private@host1:161/<oid for param1>

datasource param-host2
    ds-source        = snmp://private@host2:161/<oid for param1>

Does that help?

Thanks again,

Isi,



-----Mensaje original-----
De: Dave Shield [mailto:[email protected]] 
Enviado el: martes, 22 de noviembre de 2005 12:05
Para: Legido Martínez, Isidoro
CC: [email protected]
Asunto: Re: net-snmp as gateway

On Tue, 2005-11-22 at 11:51 +0100, Legido Martínez, Isidoro wrote:
> So, the question is: how can I say to the Perl script which is the
> remote host related to the initial request if the only information
> it has is the OID, which is the same for all the hosts? Several solutions:
> + The OID string contains a reference to the host (ugly! and not portable)
> + Several instances of net-snmp running in the same machine, each of them
>   listening in a different port. I'm not sure if that is possible or may
>   be is too heavy (we are thinking monitoring around 100 remote systems).

+ Several scripts (or several links to the same script), and use
  the name of the invoked script to determine which host to query

For example

     $ ls -l /usr/local/snmp2http/hosts
     lrwxrwxrwx  .....       host1 -> ../script
     lrwxrwxrwx  .....       host2 -> ../script
     lrwxrwxrwx  .....       host2 -> ../script

     $ head  /usr/local/snmp2http/script

     #!/usr/bin/perl
     $remote_host = $0;
         <etc, etc>


Dave


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