[ELDK] SNMP for ppc8xx w/very little flash

[Eran Duchan]

Hi Wolfgang,

Thanks for the reply.

> there might be better options than JFFS2...
Yep, it was a choice of convenience and not something that will roll out
just yet. Regardless of choice, this specific board will be very tight on
flash space.

>  it has never been a good idea to install complete packages with all the
(potention) dependencies these may pull in
> If you know what you need and pick exactly the needed files only
the result may be different
What I tried to do was rather start from snmpd and work from there (by
running it on the target and seeing what it was yelling about). Is there a
more intelligent way of doing this (and therefore allowing customization)?
My understanding is that the eldk has a compiled with such and such MIBs and
such and such dependencies - take it as a whole or leave it. Am I wrong?

> [compiling net-snmp] you don;t want to install the whole packages either.
Of course, from source I can leave out much functionality that i don't
require (v3, for example and support for MIBs other than the absolute
basic).

Thanks!
Eran

On Sun, Jan 2, 2011 at 8:31 AM, Wolfgang Denk <wd at denx.de> wrote:

> Dear Eran Duchan,
>
> In message <AANLkTi=OCdAD2TNV1A+WzVJyrRgPqn+5hTCVjwr34dHy at mail.gmail.com<OCdAD2TNV1A%2BWzVJyrRgPqn%2B5hTCVjwr34dHy at mail.gmail.com>>
> you wrote:
> >
> > I've ported u-boot and linux 2.6 to a custom ppc8xx based board and
> > everything runs fine. I am using a jffs2 image based on the SELF ramdisk,
> > and have about 1.5 megs of free space on this device.
>
> Depending on your requirements (partition size, need for a writable
> file system etc.) there might be better options than JFFS2...
>
> > I'd like to add an SNMP agent, supporting very few standard MIBs (core
> would
> > suffice). I understand that the eldk has an SNMP package, but for some
> > reason it seems to pull in a lot of libraries (librpm, for example?). In
>
> Well, for a resource-restricted embedded system it has never been a
> good idea to install complete packages with all the (potention)
> dependencies these may pull in.  Just install the tools you really
> need.
>
> > addition, its MIB library is 2 megs so it's pretty much out of the
> question.
> >
> > Therefore:
> > 1) Am I right to assume that I can't use the SNMP package from the eldk
> in
> > my case?
>
> Probably not - when you insist on installing whole packages (which
> makes little or no sense on a resource-restricted system.
>
> If you know what you need and pick exactly the needed files only the
> result may be different.
>
> > 2) Is my only course of action compiling net-snmp using eldk,
> > following the net-snmp
> > faq <http://www.net-snmp.org/wiki/index.php/FAQ:Compiling_04> regarding
> > reducing footprint?
>
> This is always an option - but even then, you don;t want to install
> the whole packages either.
>
> Best regards,
>
> Wolfgang Denk
>
> --
> DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
> Any technology distinguishable from magic is insufficiently advanced.
>