Pavel, AFAIK there are no frameworks that solve, or even come close to solving, this problem. The first thing to learn is how to do asynchronous SNMP calls that will let you send out requests without having to wait for the response. How you do those will vary by the language that you're using. Next, figure out to scale the processing and persisting of the returns and try and learn (without causing an impact) how many simultaneous SNMP requests your CMTSs will deal with while at the same time handling their normal load from customer traffic. BULKGETS are very handy, but they will also cause problems because some platforms limit the max size of the SNMP return.
>From my experience building your server side programming to do 50,000 modems in <5 minutes is very doable, but unless your dealing with more than 10 CMTSs you probably can't do it in production without impacting performance. Cisco 10Ks still have absolute caps on the amount of SNMP they will allow and other manufacturers and models do different things that limit what you can do. Scott Helms Vice President of Technology ZCorum (678) 507-5000 -------------------------------- http://twitter.com/kscotthelms -------------------------------- On Tue, Sep 29, 2015 at 4:20 PM, Pavel Dimow <paveldi...@gmail.com> wrote: > 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. >
