Hi Daniel,

"I might be missing something obvious, but 14988 and 41112 don?t look like the 
same number to me?"

Oops, I grabbed the wrong configuration file as the redacted example. Ubiquiti 
(4112) equipment initially used a wireless MIB from MikroTik (14988), which is 
confusing. As a result I support multiple versions of this gauge to support 
different OIDs depending on firmware (it's more fun that it sounds). I did 
check which version was in use, and tested them all. The OID that returns a 
value via SNMP, consistently graphs a value of zero within MRTG. I added 
versions of the gauge with 'WaLK0.' & 'WaLK' prefixed to the OID, and those 
don't graph anything other than zero as well.

I'm still trying to figure out precisely what changed in the output that 
prevents MRTG from parsing it, but I need a little direction on where to look.

Thanks for the quick response, I appreciate it!

Sincerely, 

Edwin A Epstein, III 
Rhinobee Internet Services 


----- Original Message -----
From: "mrtg-request" <[email protected]>
To: "mrtg" <[email protected]>
Sent: Tuesday, July 12, 2016 5:53:10 PM
Subject: mrtg Digest, Vol 112, Issue 25

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Today's Topics:

   1. Installation problem (thomaz portella)
   2. Installation problem (thomaz portella)
   3. Broken gauge seemingly without cause (Edwin A. Epstein III)
   4. Re: Broken gauge seemingly without cause (McDonald, Daniel (Dan))


----------------------------------------------------------------------

Message: 1
Date: Tue, 12 Jul 2016 19:43:28 -0300
From: thomaz portella <[email protected]>
To: [email protected]
Subject: [mrtg] Installation problem
Message-ID:
        <CAEd1yBOg7Sh2ZTVmBAhLiWB0=wk6bkom8+c+44hzgdiltad...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

I need to install GD, but the boutell site says it was replaced by libgd.
I downloaded and tried to install, but the mrtg installation script doesn't
recognize the libgd.
What  I have to do ?
Thanks
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Message: 2
Date: Tue, 12 Jul 2016 20:01:14 -0300
From: thomaz portella <[email protected]>
To: [email protected]
Subject: [mrtg] Installation problem
Message-ID:
        <caed1ybpzev7w3v0v7cbvjsjx9yc-nf6s4vitrhoj3ek6nar...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

> I need to install GD, but the boutell site says it was replaced by libgd.
> I downloaded and tried to install, but the mrtg installation script
doesn't recognize the libgd.
> What  I have to do ?
> Thanks
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Message: 3
Date: Wed, 13 Jul 2016 00:32:08 +0000 (UTC)
From: "Edwin A. Epstein III" <[email protected]>
To: mrtg <[email protected]>
Subject: [mrtg] Broken gauge seemingly without cause
Message-ID:
        <[email protected]>
Content-Type: text/plain; charset="utf-8"

Hello, 

I've been using MRTG to graph the number of stations connected to various 
Ubiquiti access points. This was working quite well with no issues till 
apparently a new firmware broke MRTG functionality in some way that I can't 
identify. The working configuration: 

"Target[192.168.1.1_stcount]: CnTWaLK1. 3.6.1.4.1.14988.1.1.1 .2.1.3&CnTWaLK1. 
3.6.1.4.1.14988.1.1.1 .2.1.3:[email protected] +0 
WithPeak[192.168.1.1_stcount]: ymw 
SetEnv[192.168.1.1_stcount]: MRTG_INT_IP="192.168.1.1" MRTG_INT_DESCR="stcount" 
Options[192.168.1.1_stcount]: gauge,growright,nopercent,noi 
Title[192.168.1.1_stcount]: The-Broken-Gauge 
MaxBytes[192.168.1.1_stcount]: 256 
XSize[192.168.1.1_stcount]: 600 
YTics[192.168.1.1_stcount]: 1 
YLegend[192.168.1.1_stcount]: Station Count 
Legend2[192.168.1.1_stcount]: stcount 
LegendO[192.168.1.1_stcount]: &nbsp stcount 
ShortLegend[192.168.1.1_stcount]: STc 
PageTop[192.168.1.1_stcount]: <h1>192.168.1.1 (stcount)</h1> 
<div id="sysdetails"><table> 
<tr><td>Nagios Name:</td><td>The-Broken-Gauge</td></tr> 
<tr><td>IP Address:</td><td>192.168.1.1</td></tr> 
<tr><td>Make & Model:</td><td>(NSM5) Ubiquiti Networks NanoStation M5</td></tr> 
<tr><td>MRTG Database ID:</td><td>548966</td></tr> 
<tr><td>MRTG Server:</td><td>Node 45 (10.10.3.3 )</td></tr> 
<tr><td>Maintainer:</td><td> [email protected] </td></tr> 
<tr><td>Gauge Type:</td><td>stcount</td></tr> 
<tr><td>Gauge Name:</td><td>Station Count Graph</td></tr> 
</table></div>" 

I'm aware (I think), that MRTG and snmpwalk use different libraries to manage 
the traffic. Hence, WaLK on a target line allows me to graph values otherwise 
unreadable/unreachable. This is the case with much of Ubiquiti equipment that 
is using a MIB from MikroTik (The OID above). I have two different versions of 
this gauge that support the two different MIBs that Ubiquiti uses, so I'm quite 
confident about my OIDs being correct. On the gauges that have issues a value 
of 0 is always received and graphed from the count walk. However, performing a 
snmpwalk still shows: 

"SNMPv2-SMI::enterprises. 41112.1.4.5.1.5.1 = INTEGER: -58" 

A count walk should return a value of 1, but never does. I can't see that 
anything has changed in the configuration file, or even the output from 
snmpwalk. I'm at a loss on how to proceed diagnostically here and would like 
some assistance in debugging MRTG and/or logging better information to find a 
fix here. Everything seems like it should be working as normal.... 


Sincerely, 

Edwin A Epstein, III 
Rhinobee Internet Services 

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Message: 4
Date: Wed, 13 Jul 2016 00:52:55 +0000
From: "McDonald, Daniel (Dan)" <[email protected]>
To: mrtg <[email protected]>
Subject: Re: [mrtg] Broken gauge seemingly without cause
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"

I might be missing something obvious, but 14988 and 41112 don?t look like the 
same number to me?

From: mrtg <[email protected]> on 
behalf of "Edwin A. Epstein III" <[email protected]>
Reply-To: "Edwin A. Epstein III" <[email protected]>
Date: Tuesday, July 12, 2016 at 5:32 PM
To: "[email protected]" <[email protected]>
Subject: [mrtg] Broken gauge seemingly without cause

Hello,

I've been using MRTG to graph the number of stations connected to various 
Ubiquiti access points. This was working quite well with no issues till 
apparently a new firmware broke MRTG functionality in some way that I can't 
identify. The working configuration:

"Target[192.168.1.1_stcount]: 
CnTWaLK1.3.6.1.4.1.14988.1.1.1<callto:3.6.1.4.1.14988.1.1.1>.2.1.3&CnTWaLK1.3.6.1.4.1.14988.1.1.1<callto:3.6.1.4.1.14988.1.1.1>.2.1.3:[email protected]
 +0

"SNMPv2-SMI::enterprises.41112.1.4.5.1.5.1<callto:41112.1.4.5.1.5.1> = INTEGER: 
-58"


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