RE: What NMS do you use and why?

[Stan Ouchakov <stano () imaginesoftware com>]

Regarding netflow/sflow/ipfix monitoring, we had recently started using elastiflow by Robert Cowart. Scales very well 
with pretty visualizations. Cannot imagine what paid / supported version has to offer :)

https://github.com/robcowart/elastiflow



-----Original Message-----
From: NANOG <nanog-bounces () nanog org> On Behalf Of Joe Loiacono
Sent: Wednesday, August 15, 2018 8:31 PM
To: William Herrin <bill () herrin us>
Cc: NANOG <nanog () nanog org>
Subject: Re: What NMS do you use and why?

Consider also open-source FlowViewer for netflow capture and analysis. A lot of very useful netflow based analytical 
tools in an easy UI. Sits on top of a robust set of Carnegie-Mellon's high-capacity SiLK netflow tools.

https://sourceforge.net/projects/flowviewer/

Joe



----- Original Message -----
From: "William Herrin" <bill () herrin us>
To: "Colton Conor" <colton.conor () gmail com>
Cc: "NANOG" <nanog () nanog org>
Sent: Wednesday, August 15, 2018 3:25:48 PM
Subject: Re: What NMS do you use and why?

On Wed, Aug 15, 2018 at 9:49 AM, Colton Conor <colton.conor () gmail com> wrote:
> We are looking for a new network monitoring system. Since there are so 
> many operators on this list, I would like to know which NMS do you use and why?
> Is there one that you really like, and others that you hate?

I still use a tool I wrote in perl nearly 20 years ago called "MrPing." MrPing handles multi-dependency graphs.

Consider:

A is reachable via either B or C.

If A and B are down but C is up, A being down is a separate failure from B being down. I need to know about both.

If B and C are both down, A is unreachable. I don't want to receive alerts about A because they'll distract me from the 
root cause of the
problem: that both B and C are down. The NMS should record that A is unreachable but it should also tell me that A 
being unreachable is a dependent failure that I can ignore until I fix the failures it depends on.


The NMSes I've paid attention to either don't support dependencies well at all or support only simple hierarchical 
dependencies.
Resilient, professional networks simply aren't built that way.

Regards,
Bill Herrin


--
William Herrin ................ herrin () dirtside com  bill () herrin us Dirtside Systems ......... Web: 
<http://www.dirtside.com/>