Re: need help setting a basic extented snmp agent with perl

On Mon, 28 Jan 2008, Jordi Moles Blanco wrote:

> I would like to do some thing as easy as this:
>
>
> in my snmpd.conf
>
>
> pass	.1.2.3.4.5.6.7.8.9.10  /root/myperl.pl
>
>
>
> then in this myperl.pl
>
> something as simple as.....
>
>
> echo "77";
>
[...]
>
> The snmpget command always says it didn't find the OID i'm asking for.

Quoting from the snmpd man page:

   pass [-p priority] MIBOID PROG
        will pass control of the subtree rooted at MIBOID to the  speci-
        fied  PROG  command.   GET  and GETNEXT requests for OIDs within
        this tree will trigger this command, called as:

               PROG -g OID

               PROG -n OID

        respectively, where OID is the requested OID.  The PROG  command
        should  return  the  response  varbind  as  three separate lines
        printed to stdout - the first line should  be  the  OID  of  the
        returned  value,  the second should be its TYPE (one of the text
        strings integer, gauge, counter, timeticks, ipaddress, objectid,
        or string ), and the third should be the value itself.

        If  the  command  cannot return an appropriate varbind - e.g the
        specified OID did not correspond to a valid instance for  a  GET
        request,  or  there  were no following instances for a GETNEXT -
        then it should exit without producing  any  output.   This  will
        result  in  an SNMP noSuchName error, or a noSuchInstance excep-
        tion.

That is, as long as your myperl.pl does not return three lines of
output with OID, type and value, you will always get this error from
snmpget.

HTH

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