SNMP - monitoring large number of devices

Tue Sep 29 23:24:47 UTC 2015

@op,

Can you expand a little on the end goal, health,  noise mitigation,  nms replacement,  modem validation?

-----Original Message-----
From: NANOG [mailto:nanog-bounces at nanog.org] On Behalf Of Blake Hudson
Sent: Tuesday, September 29, 2015 4:44 PM
To: nanog at nanog.org
Subject: Re: SNMP - monitoring large number of devices

I'm able to poll a few thousand CMs in a few seconds using perl's Net::SNMP and async calls. 50k seems pretty doable.

--Blake

Pavel Dimow wrote on 9/29/2015 3:20 PM:
> 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.