Thanks for your responses,
I find out that we could use context field to register the same objects of
ifTable with our subagent which netsnmp will understand and forward all
requests to my callback function connected to that context. is it right?
can i register same objects/mibs using different context and handle each
context with it own callbacks? if so? which APIs should i use to create,
register handles and how can i set the context.
Regards,
/Masoud
-----Original Message-----
From: Magnus Fromreide <[EMAIL PROTECTED]>
To: Masoud Fatollahy <[EMAIL PROTECTED]>
Cc: [email protected],
[EMAIL PROTECTED]
Date: Sun, 03 Feb 2008 08:08:08 +0100
Subject: RE: overwrite standard mib2/interfaces
On lör, 2008-02-02 at 21:42 +0100, Masoud Fatollahy wrote:
> Hi and thanks for the response,
> Since it is not possible to add our own rows to the ifTable right now
> and we don't know when this feature can be added to the net-snmp, I
> think it should be nice and helpful to know the way to disable/exclude
> ifTable on net-snmp and do everything in our subagent?
It is possible, just register your row using
Register-PDU ( ifDescr.[ifIndex] .. ifSpecific.[ifIndex] ) and it should
show up.
The problem is that you have to make sure that you don't clash with the
normal ifTable and that your interface number allocations stays the same
over time, specifically there is a requirement that interface numbers
are constant between agent (and subagent) restarts.
As for turning off the module:
>From the command line:
-I -ifTable,ifXTable
Using configure:
--with-out-mib-modules=if-mib
> Thanks,
>
> /Masoud
>
>
> -----Original Message-----
> From: "Mike Ayers" <[EMAIL PROTECTED]>
> To: "Masoud Fatollahy" <[EMAIL PROTECTED]>,
> <[EMAIL PROTECTED]>,
> <[email protected]>
> Date: Fri, 1 Feb 2008 10:38:12 -0800
> Subject: RE: overwrite standard mib2/interfaces
>
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On
> > Behalf Of Masoud Fatollahy
> > Sent: Thursday, January 31, 2008 7:24 AM
>
> > We are planning to find the best possible way to register
> our
> > ports as interface in mib2/interfaces(if-mib/ifTable) table
> > on net-snmp-5.4.1. since these ports are not seen by the
> > linux system then we should include them to the interface
> > list ourselves, but the idea is to keep net-snmp as it is
> and
> > do not modify anything(modify as little as possible). in
> > order to do this we have decided to use a sub-agent and
> > AgentX to talk to net-snamp agent. the question is:
> > How can we do this to achieve our goal?
> > A answer which we are looking at right now is that remove
> > registration of MIB2/Interfaces(if-mib/ifTable) and use our
> > subagent to register all interface mibs and callbacks
> functions.
> > Since you are the experties, I want to know your idea about
> this?
>
> There is no need to clobber the entire ifTable. Simply
> register a row for each port. You'll need to register each
> object in each row individually, which is a bit of a pain, but
> that's the only real problem. I don't know if there are
> helpers for this. I would recommend using very large numbers
> for your ifIndex to keep clear of those generated by the MIB
> module.
>
> Hopefully, the ifTable implementation has a way to
> cooperatively add your own rows, but I've never examined it.
> Anyone?
>
>
> Thanks,
>
> Mike
>
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