SNMPc has a good dependency system for minimizing cascading alerts
On Mon, Dec 29, 2014 at 11:34 AM, Paul Conlin via Af <[email protected]> wrote: > I think that is the general consensus. Trapping at first glance appears > to be the solution for alerting until the reliability comes into question > due to the lack of some sort of ACK within the protocol. Forrest has > talked about this numerous times and likely has some hard fought lessons > learned. Maybe he will chime in. > > > > It would be nice if Cacti had some sort of statefull mechanism to switch > to a higher frequency “ping” once a device fails to respond to the standard > 5 minute check-in schedule. A 5 minute old alert would be fine but you > really need to wait for two or more poles to confirm and with such a slow > sample rate 10 or 15 minutes becomes a little tardy for some targets. The > other desirable requirement is for a hierarchal tree so that a backhaul > outage doesn’t trigger a landslide of alerts from all the devices on the > other side on the downed link. I believe there are other monitoring > systems that do both of these things but I have no experience beyond Cacti. > > > > PC > > Blaze Broadband > > > > > > *From:* Af [mailto:[email protected]] *On Behalf Of *Chuck McCown via > Af > *Sent:* Monday, December 29, 2014 12:18 PM > *To:* [email protected] > *Subject:* Re: [AFMUG] traps vs polling > > > > If we poll every minute or every 5 minutes, catching traps may not be > important. > > If we don’t poll, I worry that we will miss a trap due to it being UDP. > > > > *From:* Eric Muehleisen via Af <[email protected]> > > *Sent:* Monday, December 29, 2014 9:52 AM > > *To:* [email protected] > > *Subject:* Re: [AFMUG] traps vs polling > > > > Both. Traps for realtime alerting and polling for historicals. > > On Monday, December 29, 2014, Chuck McCown via Af <[email protected]> wrote: > > When attempting to collect system wide status and alarm data real-time, > are traps reliable enough or should you just poll everything on a regular > basis? > > > > -- > Sent via mobile > -- All parts should go together without forcing. You must remember that the parts you are reassembling were disassembled by you. Therefore, if you can't get them together again, there must be a reason. By all means, do not use a hammer. -- IBM maintenance manual, 1925
