[184247] in North American Network Operators' Group
Re: SNMP - monitoring large number of devices
daemon@ATHENA.MIT.EDU (Anton Berezin)
Wed Sep 30 10:11:54 2015
X-Original-To: nanog@nanog.org
Date: Wed, 30 Sep 2015 15:32:00 +0200
From: Anton Berezin <tobez@tobez.org>
To: Pavel Dimow <paveldimow@gmail.com>
In-Reply-To: <CAKb_Nur6VdVs7QRiGLUT0x6rZwh=Dc1D7cbQEOQiwSWpiXwA8A@mail.gmail.com>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
Hello,
On Tue, Sep 29, 2015 at 10:20:19PM +0200, Pavel Dimow wrote:
> recently I have been tasked with a NMS project. The idea is to pool about
> 20 OID's from 50k cable modems in less then 5 minutes (yes, I know it's a
> one million OID's). Before you say check out some very professional and
> expensive solutions I would like to know are there any alternatives like
> open source "snmp framework"? To be more descriptive many of you knows how
> big is the mess with snmp on cable modem. You always first perform snmp
> walk in order to discover interfaces and then read the values for those
> interfaces. As cable modem can bundle more DS channels, one time you can
> have one and other time you can have N+1 DS channels = interfaces. All in
> all I don't believe that there is something perfect out there when it comes
> to tracking huge number of cable modems so I would like to know is there
> any "snmp framework" that can be exteded and how did you (or would you)
> solve this problem.
You might wish to check out https://github.com/tobez/snmp-query-engine
(disclosure: I am the author).
Some scripting is needed to instruct it to do the polling and fetch the
collecting results. Currently there are only bindings for Perl
(https://metacpan.org/pod/Net::SNMP::QueryEngine::AnyEvent),
but bindings for other dynamic languages should be pretty straightforward.
We routinely use it to collect comparable quantities of OIDs.
\Anton.
--
Our society can survive even a large amount of irrational regulation.
-- John McCarthy
