Nagios Support Forum

Support for Nagios products and services
https://support.nagios.com/forum/

VMware ESX Network via SNMP v2

https://support.nagios.com/forum/viewtopic.php?t=32732

Page 1 of 2

VMware ESX Network via SNMP v2

Posted: Tue May 05, 2015 11:37 am
by OptimusB
I came across this issue while configuring 5.1 ESXi host. Using SNMPv2 via the network switch wizard, which will capture all the network ports configured with the host. However it does not produce any performance data, all network bandwidth is flatlined. However after reading MRTG's site, I decided to give v1 a try and that looks to be working right. I was able to see the network performance data.

One more item I noticed while comparing the MRTG file and what the wizard discovers. Max speeds detected by the wizard is correct. However in the MRTG configuration is different. Example, Port 5 to 10 are detected as 4.29Gbps but the CFG files shows max speed of 536.9MB.
esx ports.JPG

Code: Select all

### Interface 8 >> Descr: 'Device-vmnic7-at-74:00.0-enic' | Name: 'vmnic7' | Ip: 'No Ip' | Eth: '6c-41-6a-b1-25-38' ###

Target[esxihost_8]: 8:snmp@esxihost:::::1
SetEnv[esxihost_8]: MRTG_INT_IP="No Ip" MRTG_INT_DESCR="Device-vmnic7-at-74:00.0-enic"
MaxBytes[esxihost_8]: 536870911
Title[esxihost_8]: Traffic Analysis for 8 -- esxihost.domain.loc
PageTop[esxihost_8]: <h1>Traffic Analysis for 8 -- esxihost.domain.loc</h1>
                <div id="sysdetails">
                        <table>
                                <tr>
                                        <td>System:</td>
                                        <td>esxihost.domain.loc in </td>
                                </tr>
                                <tr>
                                        <td>Maintainer:</td>
                                        <td></td>
                                </tr>
                                <tr>
                                        <td>Description:</td>
                                        <td>Device-vmnic7-at-74:00.0-enic  </td>
                                </tr>
                                <tr>
                                        <td>ifType:</td>
                                        <td>ethernetCsmacd (6)</td>
                                </tr>
                                <tr>
                                        <td>ifName:</td>
                                        <td>vmnic7</td>
                                </tr>
                                <tr>
                                        <td>Max Speed:</td>
                                        <td>536.9 MBytes/s</td>
                                </tr>
                                <tr>
                                        <td>Ip:</td>
                                        <td>No Ip (No DNS name)</td>
                                </tr>
                        </table>
                </div>
The graphs shows up with Gbps so I just want to validate if the data is correct or not.

Re: VMware ESX Network via SNMP v2

Posted: Tue May 05, 2015 11:49 am
by abrist
Formula:

Code: Select all

Gbps รท 0.008 = MBps
Well, 4.29Gbps = 536.25MBps. So my assumption is that it is most likely correct.
http://www.numion.com/calculators/units.html

Re: VMware ESX Network via SNMP v2

Posted: Tue May 05, 2015 4:07 pm
by OptimusB
Thanks for the clarification. I didn't even think about that after conversion!

As for the SNMP v1 vs v2 with different results, I am guessing that this is just how MRTG behaves?

Re: VMware ESX Network via SNMP v2

Posted: Wed May 06, 2015 10:53 am
by lmiltchev
As for the SNMP v1 vs v2 with different results, I am guessing that this is just how MRTG behaves?
Let's clarify - you are saying that you get performance data ONLY when you use SNMP v1, but not when you use v2, correct?

Re: VMware ESX Network via SNMP v2

Posted: Wed May 06, 2015 1:45 pm
by OptimusB
Let's clarify - you are saying that you get performance data ONLY when you use SNMP v1, but not when you use v2, correct?
That's correct.

Re: VMware ESX Network via SNMP v2

Posted: Wed May 06, 2015 4:12 pm
by jdalrymple
If you go to the advanced tab is your perfdata blank? Mine is not (see attachment)

Re: VMware ESX Network via SNMP v2

Posted: Wed May 06, 2015 5:56 pm
by OptimusB
Here's what I have for v1 and v2. v1 is the one with data.

V1
v1.JPG
V2
v2.JPG
MRTG configuration
V1

Code: Select all

### Interface 8 >> Descr: 'Device-vmnic7-at-74:00.0-enic' | Name: 'vmnic7' | Ip: 'No Ip' | Eth: '6c-41-6a-b1-25-38' ###

Target[vh1_8]: 8:esx@vh1:::::1
SetEnv[vh1_8]: MRTG_INT_IP="No Ip" MRTG_INT_DESCR="Device-vmnic7-at-74:00.0-enic"
MaxBytes[vh1_8]: 536870911
Title[vh1_8]: Traffic Analysis for 8 -- vh1
PageTop[vh1_8]: <h1>Traffic Analysis for 8 -- vh1</h1>
                <div id="sysdetails">
                        <table>
                                <tr>
                                        <td>System:</td>
                                        <td>vh1 in </td>
                                </tr>
                                <tr>
                                        <td>Maintainer:</td>
                                        <td></td>
                                </tr>
                                <tr>
                                        <td>Description:</td>
                                        <td>Device-vmnic7-at-74:00.0-enic  </td>
                                </tr>
                                <tr>
                                        <td>ifType:</td>
                                        <td>ethernetCsmacd (6)</td>
                                </tr>
                                <tr>
                                        <td>ifName:</td>
                                        <td>vmnic7</td>
                                </tr>
                                <tr>
                                        <td>Max Speed:</td>
                                        <td>536.9 MBytes/s</td>
                                </tr>
                                <tr>
                                        <td>Ip:</td>
                                        <td>No Ip (No DNS name)</td>
                                </tr>
                        </table>
                </div>
v2

Code: Select all

### Interface 8 >> Descr: 'Device-vmnic7-at-74:00.0-enic' | Name: 'vmnic7' | Ip: 'No Ip' | Eth: '6c-41-6a-b1-25-38' ###

Target[10.242.13.1_8]: 8:[email protected]:::::2
SetEnv[10.242.13.1_8]: MRTG_INT_IP="No Ip" MRTG_INT_DESCR="Device-vmnic7-at-74:00.0-enic"
MaxBytes[10.242.13.1_8]: 1250000000
Title[10.242.13.1_8]: Traffic Analysis for 8 -- vh1
PageTop[10.242.13.1_8]: <h1>Traffic Analysis for 8 -- vh1</h1>
                <div id="sysdetails">
                        <table>
                                <tr>
                                        <td>System:</td>
                                        <td>vh1 in </td>
                                </tr>
                                <tr>
                                        <td>Maintainer:</td>
                                        <td></td>
                                </tr>
                                <tr>
                                        <td>Description:</td>
                                        <td>Device-vmnic7-at-74:00.0-enic  </td>
                                </tr>
                                <tr>
                                        <td>ifType:</td>
                                        <td>ethernetCsmacd (6)</td>
                                </tr>
                                <tr>
                                        <td>ifName:</td>
                                        <td>vmnic7</td>
                                </tr>
                                <tr>
                                        <td>Max Speed:</td>
                                        <td>1250.0 MBytes/s</td>
                                </tr>
                                <tr>
                                        <td>Ip:</td>
                                        <td>No Ip (No DNS name)</td>
                                </tr>
                        </table>
                </div>

Re: VMware ESX Network via SNMP v2

Posted: Wed May 06, 2015 11:22 pm
by Box293
On your ESXi host, where have you configured the snmp community name? Can you provide a screenshot.

Re: VMware ESX Network via SNMP v2

Posted: Thu May 07, 2015 9:22 am
by jdalrymple
Is SNMP returning any data for v 2c?

Code: Select all

[jdalrymple@localhost cron.d]$ snmpwalk -v 2c -c <community> <ESXi IP> ifOutOctets
IF-MIB::ifOutOctets.1 = Counter32: 849427213
IF-MIB::ifOutOctets.2 = Counter32: 0
IF-MIB::ifOutOctets.3 = Counter32: 849427213
IF-MIB::ifOutOctets.4 = Counter32: 849427213
IF-MIB::ifOutOctets.5 = Counter32: 0
IF-MIB::ifOutOctets.6 = Counter32: 0

Re: VMware ESX Network via SNMP v2

Posted: Thu May 07, 2015 10:33 am
by OptimusB
Yes Looks like it is returning that information.

Code: Select all

# snmpwalk -v 2c -c esx 10.242.13.1 ifOutOctets
IF-MIB::ifOutOctets.1 = Counter32: 0
IF-MIB::ifOutOctets.2 = Counter32: 0
IF-MIB::ifOutOctets.3 = Counter32: 0
IF-MIB::ifOutOctets.4 = Counter32: 0
IF-MIB::ifOutOctets.5 = Counter32: 2746749794
IF-MIB::ifOutOctets.6 = Counter32: 0
IF-MIB::ifOutOctets.7 = Counter32: 3663835517
IF-MIB::ifOutOctets.8 = Counter32: 3566282968
IF-MIB::ifOutOctets.9 = Counter32: 2115618015
IF-MIB::ifOutOctets.10 = Counter32: 2115618015
IF-MIB::ifOutOctets.11 = Counter32: 2115618015
IF-MIB::ifOutOctets.12 = Counter32: 2115618015
IF-MIB::ifOutOctets.13 = Counter32: 0
IF-MIB::ifOutOctets.14 = Counter32: 0
IF-MIB::ifOutOctets.15 = Counter32: 0
IF-MIB::ifOutOctets.16 = Counter32: 0
IF-MIB::ifOutOctets.17 = Counter32: 0
IF-MIB::ifOutOctets.18 = Counter32: 0
I am reading from MRTG that SNMPv2 will look for ifHC* counters? which I do see....
(http://oss.oetiker.ch/mrtg/doc/mrtg-reference.en.html under SNMPv2c)

Code: Select all

# snmpwalk -v 2c -c esx 10.242.13.1 | grep ifHC*
IF-MIB::ifHCInOctets.1 = Counter64: 0
IF-MIB::ifHCInOctets.2 = Counter64: 0
IF-MIB::ifHCInOctets.3 = Counter64: 0
IF-MIB::ifHCInOctets.4 = Counter64: 0
IF-MIB::ifHCInOctets.5 = Counter64: 2478195431
IF-MIB::ifHCInOctets.6 = Counter64: 1464148720
IF-MIB::ifHCInOctets.7 = Counter64: 3997892322
IF-MIB::ifHCInOctets.8 = Counter64: 2132318216
IF-MIB::ifHCInOctets.9 = Counter64: 2181120457
IF-MIB::ifHCInOctets.10 = Counter64: 2181120457
IF-MIB::ifHCInOctets.11 = Counter64: 2181120457
IF-MIB::ifHCInOctets.12 = Counter64: 2181120457
IF-MIB::ifHCInOctets.13 = Counter64: 0
IF-MIB::ifHCInOctets.14 = Counter64: 0
IF-MIB::ifHCInOctets.15 = Counter64: 0
IF-MIB::ifHCInOctets.16 = Counter64: 0
IF-MIB::ifHCInOctets.17 = Counter64: 0
IF-MIB::ifHCInOctets.18 = Counter64: 0
IF-MIB::ifHCInUcastPkts.1 = Counter64: 0
IF-MIB::ifHCInUcastPkts.2 = Counter64: 0
IF-MIB::ifHCInUcastPkts.3 = Counter64: 0
IF-MIB::ifHCInUcastPkts.4 = Counter64: 0
IF-MIB::ifHCInUcastPkts.5 = Counter64: 1974352498
IF-MIB::ifHCInUcastPkts.6 = Counter64: 22586
IF-MIB::ifHCInUcastPkts.7 = Counter64: 3915102381
IF-MIB::ifHCInUcastPkts.8 = Counter64: 3740752572
IF-MIB::ifHCInUcastPkts.9 = Counter64: 1594487583
IF-MIB::ifHCInUcastPkts.10 = Counter64: 1594487583
IF-MIB::ifHCInUcastPkts.11 = Counter64: 1594487583
IF-MIB::ifHCInUcastPkts.12 = Counter64: 1594487583
IF-MIB::ifHCInUcastPkts.13 = Counter64: 3478267112
IF-MIB::ifHCInUcastPkts.14 = Counter64: 2085400558
IF-MIB::ifHCInUcastPkts.15 = Counter64: 0
IF-MIB::ifHCInUcastPkts.16 = Counter64: 1
IF-MIB::ifHCInUcastPkts.17 = Counter64: 2
IF-MIB::ifHCInUcastPkts.18 = Counter64: 2
IF-MIB::ifHCInMulticastPkts.1 = Counter64: 0
IF-MIB::ifHCInMulticastPkts.2 = Counter64: 0
IF-MIB::ifHCInMulticastPkts.3 = Counter64: 0
IF-MIB::ifHCInMulticastPkts.4 = Counter64: 0
IF-MIB::ifHCInMulticastPkts.5 = Counter64: 112578547
IF-MIB::ifHCInMulticastPkts.6 = Counter64: 16667504
IF-MIB::ifHCInMulticastPkts.7 = Counter64: 112580174
IF-MIB::ifHCInMulticastPkts.8 = Counter64: 16667066
IF-MIB::ifHCInMulticastPkts.9 = Counter64: 225158721
IF-MIB::ifHCInMulticastPkts.10 = Counter64: 225158721
IF-MIB::ifHCInMulticastPkts.11 = Counter64: 225158721
IF-MIB::ifHCInMulticastPkts.12 = Counter64: 225158721
IF-MIB::ifHCInMulticastPkts.13 = Counter64: 0
IF-MIB::ifHCInMulticastPkts.14 = Counter64: 0
IF-MIB::ifHCInMulticastPkts.15 = Counter64: 0
IF-MIB::ifHCInMulticastPkts.16 = Counter64: 0
IF-MIB::ifHCInMulticastPkts.17 = Counter64: 0
IF-MIB::ifHCInMulticastPkts.18 = Counter64: 0
IF-MIB::ifHCInBroadcastPkts.1 = Counter64: 0
IF-MIB::ifHCInBroadcastPkts.2 = Counter64: 0
IF-MIB::ifHCInBroadcastPkts.3 = Counter64: 0
IF-MIB::ifHCInBroadcastPkts.4 = Counter64: 0
IF-MIB::ifHCInBroadcastPkts.5 = Counter64: 4984851
IF-MIB::ifHCInBroadcastPkts.6 = Counter64: 21168
IF-MIB::ifHCInBroadcastPkts.7 = Counter64: 4984878
IF-MIB::ifHCInBroadcastPkts.8 = Counter64: 21168
IF-MIB::ifHCInBroadcastPkts.9 = Counter64: 9969729
IF-MIB::ifHCInBroadcastPkts.10 = Counter64: 9969729
IF-MIB::ifHCInBroadcastPkts.11 = Counter64: 9969729
IF-MIB::ifHCInBroadcastPkts.12 = Counter64: 9969729
IF-MIB::ifHCInBroadcastPkts.13 = Counter64: 0
IF-MIB::ifHCInBroadcastPkts.14 = Counter64: 0
IF-MIB::ifHCInBroadcastPkts.15 = Counter64: 0
IF-MIB::ifHCInBroadcastPkts.16 = Counter64: 0
IF-MIB::ifHCInBroadcastPkts.17 = Counter64: 0
IF-MIB::ifHCInBroadcastPkts.18 = Counter64: 0
IF-MIB::ifHCOutUcastPkts.1 = Counter64: 0
IF-MIB::ifHCOutUcastPkts.2 = Counter64: 0
IF-MIB::ifHCOutUcastPkts.3 = Counter64: 0
IF-MIB::ifHCOutUcastPkts.4 = Counter64: 0
IF-MIB::ifHCOutUcastPkts.5 = Counter64: 576654218
IF-MIB::ifHCOutUcastPkts.6 = Counter64: 0
IF-MIB::ifHCOutUcastPkts.7 = Counter64: 3170711689
IF-MIB::ifHCOutUcastPkts.8 = Counter64: 1407162402
IF-MIB::ifHCOutUcastPkts.9 = Counter64: 3747365907
IF-MIB::ifHCOutUcastPkts.10 = Counter64: 3747365907
IF-MIB::ifHCOutUcastPkts.11 = Counter64: 3747365907
IF-MIB::ifHCOutUcastPkts.12 = Counter64: 3747365907
IF-MIB::ifHCOutUcastPkts.13 = Counter64: 2377362792
IF-MIB::ifHCOutUcastPkts.14 = Counter64: 2814315288
IF-MIB::ifHCOutUcastPkts.15 = Counter64: 29
IF-MIB::ifHCOutUcastPkts.16 = Counter64: 0
IF-MIB::ifHCOutUcastPkts.17 = Counter64: 0
IF-MIB::ifHCOutUcastPkts.18 = Counter64: 0
IF-MIB::ifHCOutMulticastPkts.1 = Counter64: 0
IF-MIB::ifHCOutMulticastPkts.2 = Counter64: 0
IF-MIB::ifHCOutMulticastPkts.3 = Counter64: 0
IF-MIB::ifHCOutMulticastPkts.4 = Counter64: 0
IF-MIB::ifHCOutMulticastPkts.5 = Counter64: 1375325
IF-MIB::ifHCOutMulticastPkts.6 = Counter64: 0
IF-MIB::ifHCOutMulticastPkts.7 = Counter64: 1252834
IF-MIB::ifHCOutMulticastPkts.8 = Counter64: 5
IF-MIB::ifHCOutMulticastPkts.9 = Counter64: 2628159
IF-MIB::ifHCOutMulticastPkts.10 = Counter64: 2628159
IF-MIB::ifHCOutMulticastPkts.11 = Counter64: 2628159
IF-MIB::ifHCOutMulticastPkts.12 = Counter64: 2628159
IF-MIB::ifHCOutMulticastPkts.13 = Counter64: 0
IF-MIB::ifHCOutMulticastPkts.14 = Counter64: 0
IF-MIB::ifHCOutMulticastPkts.15 = Counter64: 0
IF-MIB::ifHCOutMulticastPkts.16 = Counter64: 0
IF-MIB::ifHCOutMulticastPkts.17 = Counter64: 0
IF-MIB::ifHCOutMulticastPkts.18 = Counter64: 0
IF-MIB::ifHCOutBroadcastPkts.1 = Counter64: 0
IF-MIB::ifHCOutBroadcastPkts.2 = Counter64: 0
IF-MIB::ifHCOutBroadcastPkts.3 = Counter64: 0
IF-MIB::ifHCOutBroadcastPkts.4 = Counter64: 0
IF-MIB::ifHCOutBroadcastPkts.5 = Counter64: 2260705
IF-MIB::ifHCOutBroadcastPkts.6 = Counter64: 0
IF-MIB::ifHCOutBroadcastPkts.7 = Counter64: 6817126
IF-MIB::ifHCOutBroadcastPkts.8 = Counter64: 21159
IF-MIB::ifHCOutBroadcastPkts.9 = Counter64: 9077831
IF-MIB::ifHCOutBroadcastPkts.10 = Counter64: 9077831
IF-MIB::ifHCOutBroadcastPkts.11 = Counter64: 9077831
IF-MIB::ifHCOutBroadcastPkts.12 = Counter64: 9077831
IF-MIB::ifHCOutBroadcastPkts.13 = Counter64: 0
IF-MIB::ifHCOutBroadcastPkts.14 = Counter64: 0
IF-MIB::ifHCOutBroadcastPkts.15 = Counter64: 0
IF-MIB::ifHCOutBroadcastPkts.16 = Counter64: 0
IF-MIB::ifHCOutBroadcastPkts.17 = Counter64: 0
IF-MIB::ifHCOutBroadcastPkts.18 = Counter64: 0
IF-MIB::ifHighSpeed.1 = Gauge32: 0
IF-MIB::ifHighSpeed.2 = Gauge32: 0
IF-MIB::ifHighSpeed.3 = Gauge32: 0
IF-MIB::ifHighSpeed.4 = Gauge32: 0
IF-MIB::ifHighSpeed.5 = Gauge32: 10000
IF-MIB::ifHighSpeed.6 = Gauge32: 10000
IF-MIB::ifHighSpeed.7 = Gauge32: 10000
IF-MIB::ifHighSpeed.8 = Gauge32: 10000
IF-MIB::ifHighSpeed.9 = Gauge32: 10000
IF-MIB::ifHighSpeed.10 = Gauge32: 10000
IF-MIB::ifHighSpeed.11 = Gauge32: 10000
IF-MIB::ifHighSpeed.12 = Gauge32: 10000
IF-MIB::ifHighSpeed.13 = Gauge32: 0
IF-MIB::ifHighSpeed.14 = Gauge32: 0
IF-MIB::ifHighSpeed.15 = Gauge32: 0
IF-MIB::ifHighSpeed.16 = Gauge32: 0
IF-MIB::ifHighSpeed.17 = Gauge32: 0
IF-MIB::ifHighSpeed.18 = Gauge32: 0
So doing a walk, it looks like it has an ifHCInOctet but not ifHCOutOctet....

Code: Select all

# snmpwalk -v 2c -c esx 10.242.13.1 | grep ifHCInOctets
IF-MIB::ifHCInOctets.1 = Counter64: 0
IF-MIB::ifHCInOctets.2 = Counter64: 0
IF-MIB::ifHCInOctets.3 = Counter64: 0
IF-MIB::ifHCInOctets.4 = Counter64: 0
IF-MIB::ifHCInOctets.5 = Counter64: 2798128280
IF-MIB::ifHCInOctets.6 = Counter64: 1464163212
IF-MIB::ifHCInOctets.7 = Counter64: 4046122006
IF-MIB::ifHCInOctets.8 = Counter64: 3197500063
IF-MIB::ifHCInOctets.9 = Counter64: 2549282990
IF-MIB::ifHCInOctets.10 = Counter64: 2549282990
IF-MIB::ifHCInOctets.11 = Counter64: 2549282990
IF-MIB::ifHCInOctets.12 = Counter64: 2549282990
IF-MIB::ifHCInOctets.13 = Counter64: 0
IF-MIB::ifHCInOctets.14 = Counter64: 0
IF-MIB::ifHCInOctets.15 = Counter64: 0
IF-MIB::ifHCInOctets.16 = Counter64: 0
IF-MIB::ifHCInOctets.17 = Counter64: 0
IF-MIB::ifHCInOctets.18 = Counter64: 0
# snmpwalk -v 2c -c esx 10.242.13.1 | grep ifHCOutOctets
#
At this point if V1 works, I can stick with that, I am not sure why V2 is behaving like this and could be the ESX host side? As long as I can validate that the data captured is accurate.
All times are UTC-05:00
Page 1 of 2

Powered by phpBB® Forum Software © phpBB Limited