[j-nsp] open source packages to monitor ex2200/vc

[Catalin Dominte - Nocsult Ltd]

I did talk to Juniper TAC about this, and there is no workaround their weird MIB implementation. Filters are your friend, and NMSs like Observiu / LibreNMS which poll everything they can get their hands on are not necessarily your best friend here. Unless you can turn off specific modules that is.  

Catalin Dominte | Senior Network Consultant
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> On 17 Aug 2016, at 16:53, raf <raph at futomaki.net> wrote:
> 
> Le 17/08/2016 à 17:28, Catalin Dominte a écrit :
>> I usually create a snmp filter to avoid polling interfaces ending in .0. If you poll an ex2200 / 3300 / 4200 it spends a long time polling the ifTable and ifxTable. The polling time is reduced considerably if .0 interfaces are dropped and I can poll the device every 5 minutes.
>> 
> 
> Yes snmp request can kill the control plane of EXs. For example Observium was killing my ex4550 (causing ldp sessions to drop and so on). I still consider that completely ridiculous...
> 
> With correct snmp filter the situation is less worse, but I still have to patch the Observium poller to let some breathes to my ex(s).
> OK the Observium poller is quite aggressive (or stupid depend of the point of view :).
> 
> 
>>> What is everyone using to monitor their EX2200/VC stacks?
>>> 
> 
> I've made some ugly scripts in python to check via ssh the output of "show virtual-chassis".
> 
>>> We are using check_mk to monitor our network which is great, however due to
>>> the way it polls or due to the low power of the ex2200 I'm unable to
>>> monitor all the individual interfaces.
> 
> Check-mk is great, but do lot of snmpwalk to check network devices. (If I had time I will take a look to patch and make it use an interfaces cache)
> 
> --
> Raphael Mazelier
> 
> 
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