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I've got an issue with interface graphs on some hardware. It mainly happens with Ubiquiti, Mimosa and Dragonwave equipment and I am using core version 4.2.5. It happened with earlier versions also. When looking at the interface graphs, ethernet or wlan, the throughput graph is broken up kind of dash like. It does not appear that way in the packets graph of that same interface. Anyone have a clue as to why and a way to fix it

Subject:	my guess is you're
Author:	Andrew Kirch
Posted:	2015-10-08 13:25

my guess is you're experiencing gaps in graphs due to RRD or collection speed issues. This is something that's solved in 5.x. There's a zenpack to detect the issue http://wiki.zenoss.org/ZenPack:NaN_Threshold

Andrew Kirch

akirch@gvit.com

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Subject:	Was hoping it was something I
Author:	Terri Kelley
Posted:	2015-10-12 14:57

Was hoping it was something I could fix in the this one. Otherwise I have to upgrade OS and core. Sigh...

Subject:	in 5, we just interpolate the
Author:	Andrew Kirch
Posted:	2015-10-12 14:59

in 5, we just interpolate the data. I would strongly suggest examining why the data is being missed.

Subject:	To check your raw rrd data
Author:	Jane Curry
Posted:	2015-10-22 09:40

To check your raw rrd data files, navigate to the correct directory - under
$ZENHOME/perf/Devices//os/interfaces/ .

To examine the data in an rrd file, say ifHCInOctets_ifHCInOctets.rrd, use:

rrdtool dump ifHCInOctets_ifHCInOctets.rrd |more

Check whether you have real data or NaN values.

Normally, if you get missing data, you tend to get it for all similar SNMP queries to a device but it may just be a problem getting those throughput values.

You might also check zenperfsnmp.log to see if there are any complaints in there for these devices.

Cheers,
Jane

Email: jane.curry@skills-1st.co.uk Web: https://www.skills-1st.co.uk

Subject:	raw data check
Author:	Terri Kelley
Posted:	2015-10-22 10:42

Hi Jane,

Thanks for the info. Took a look at that interface and I am getting NaN values every so often. Not at regular intervals. I'm not getting it for the packet graphs on those same interfaces. Nothing in the zenperfsnmp.log pertaining to those. Just to make sure I searched for anything on that host in the logs and nothing listed.
I thought at first it might be a timing issue so I lengthened the timeout interval. That didn't help either.

Terri

Subject:	interface graphs become dashes
Author:	Terri Kelley
Posted:	2015-10-08 10:49

interface graphs become dashes