So we have used www.zenoss.org for many years. Individual collectors are easily 
handling snmp poll rates of 1.5k oids per second(450k per 5m). As zenoss core 
is open source Its probably worth a look for you.

-Joel

-----Original Message-----
From: NANOG [mailto:nanog-bounces+joel.whitcomb=citrix....@nanog.org] On Behalf 
Of Pavel Dimow
Sent: Tuesday, September 29, 2015 1:20 PM
To: NANOG <nanog@nanog.org>
Subject: SNMP - monitoring large number of devices

Hi all,

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.

Thank you.

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