Overview

Details

SNMP Interface & IPSLA statistic poller

[snmpif://hostname]
destination = hostname
snmp_version = 3
v3_securityName = username
v3_authKey = password
snmpinterval = 300
interfaces = 1,5,8,9
index = network
# The sourcetype can be whatever you want
sourcetype = snmpif

[ipsla://hostname]
destination = hostname
snmp_version = 3
v3_securityName = username
v3_authKey = password
snmpinterval = 300
operations = 2,7
index = network
sourcetype = ipsla

SnmpMod

Deployment

splunk install app snmpmod.spl -update 1 -auth admin:changeme
cd $SPLUNK_HOME/etc/apps/snmpmod
mkdir local
vim local/inputs.conf

SNMP v3

If you are using SNMP version 3 , you have to obtain the PyCrypto package yourself:

As of Python 2.7.9, pip is included with the release. Run

pip2 install pycrypto

Windows
Copy C:\Python27\Lib\site-packages\Crypto to $SPLUNK_HOME\etc\apps\snmpmod\bin
Linux
Copy /usr/local/lib/python2.7/dist-packages/Crypto to $SPLUNK_HOME/etc/apps/snmpmod/bin

snmpif Stanza

[snmpif://hostname]
destination = hostname
snmp_version = 3
v3_securityName = username
v3_authKey = password
snmpinterval = 300
interfaces = 1,5,8,9
index = network
# The sourcetype can be whatever you want
sourcetype = snmpif

ipsla Stanza

[ipsla://hostname]
destination = hostname
snmp_version = 3
v3_securityName = username
v3_authKey = password
snmpinterval = 300
operations = 2,7
index = network
sourcetype = ipsla

Response Handlers

destination, host and /etc/hosts

Currently, all response handlers set the Splunk host to the value of destination. If you don't have DNS (bad sysadmin!) add an entry to /etc/hosts. I'd be very happy to take a pull request that will look at a host config option and override destination with that value.

SNMP Interface Search Query

I strongly recommend you create a search macro snmpif_traffic that uses streamstats to calculate the bits per second from the raw snmpif data. My macro is:

stats first(*) as * by _time host ifIndex
| streamstats window=2 global=false current=true range(if*Octets) as delta*, range(_time) as secs by host, ifIndex
| where secs&gt;0
| eval bpsIn=coalesce(deltaHCIn, deltaIn)*8/secs
| eval bpsOut=coalesce(deltaHCOut, deltaOut)*8/secs
| eval mbpsIn=bpsIn/1000000 | eval mbpsOut=bpsOut/1000000

Then to call it and display the results as a graph:

index=snmpif host=foo ifIndex=17 | `snmpif_parse`
| timechart bins=500 avg(mbpsIn) as "Mbps IN", avg(mbpsOut) as "Mbps OUT"

And calculate 95th percentile figures

index=snmpif host=foo ifIndex=17 | `snmpif_parse`
| stats perc95(mbpsIn) as "IN", perc95(mbpsOut) as "OUT"

Summary Collection

The search term shown above is quite expensive. I am running the query above and collecting the data into a new index.

[search index=network sourcetype=snmp_traffic | stats first(_time) as earliest] index=network sourcetype="snmpif"
| stats first(*) as * by _time host ifIndex
| streamstats window=2 global=false current=true range(if*Octets) as delta*, range(_time) as secs by host, ifIndex
| where secs&gt;0
| eval bpsIn=coalesce(deltaHCIn, deltaIn)*8/secs
| eval bpsOut=coalesce(deltaHCOut, deltaOut)*8/secs
| eval mbpsIn=bpsIn/1000000
| eval mbpsOut=bpsOut/1000000
| fields _time host ifIndex bpsIn bpsOut ifAdminStatus ifDescr ifMtu ifOperStatus ifPhysAddress ifSpecific ifSpeed ifType mbpsIn mbpsOut
| collect index=network sourcetype=snmp_traffic

There is a trick there of using the most recent snmp_traffic event to start the next round of collections. I run this search every 30 minutes.

About

This project was originally based on SplunkModularInputsPythonFramework.
I have taken the SNMP modular input, refactored the python code to be more re-usable and added extra stanzas for polling interfaces and ipsla statistics.

Release Notes

Version 2.5.4

April 1, 2016

## v2.5.4
* More changes to error handling

Version 2.5.3

March 24, 2016

# Release Notes

## v2.5.3
* Fixes and tweaks to logging

## v2.5.2
* Significant improvements to logging

Version 2.5.1

Feb. 2, 2016

## v2.5.1
* [Issue #3](https://github.com/oxo42/snmpmod/issues/3): Fixed statistics coming through

Version 2.5.0

Jan. 18, 2016

## v2.5.0
* [Issue #2](https://github.com/oxo42/snmpmod/issues/2): Added `dropBitRate` to `qos`

## v2.4.0
* Added `qos` section for querying CB QOS policy rates

## v2.3.0
* Added jitter stats packet loss counters to IPSLA

## v2.2.1
* Increase transport timeout to 2 seconds

## v2.2.0
* Added RTT Sum2 to IPSLA poller
* Added operation response to IPSLA poller
* Added high counter Ucast packets to snmpif

## v2.1.2
* Removed RTTSumHigh from IPSLA

## v2.1.1
* Renamed IPSLA entry to operation

Version 2.4.0

Nov. 13, 2015

* Added `qos` section for querying CB QOS policy rates

Version 2.3.0

July 1, 2015

## v2.3.0
* Added jitter stats packet loss counters to IPSLA

## v2.2.1
* Increase transport timeout to 2 seconds

## v2.2.0
* Added RTT Sum2 to IPSLA poller
* Added operation response to IPSLA poller
* Added high counter Ucast packets to snmpif

## v2.1.2
* Removed RTTSumHigh from IPSLA

## v2.1.1
* Renamed IPSLA entry to operation

Version 2.2.1

June 18, 2015

Increase transport timeout to 2 seconds

Version 2.2.0

May 15, 2015

## v2.2.0 Changelog
* Added RTT Sum2 to IPSLA poller
* Added operation response to IPSLA poller
* Added high counter Ucast packets to snmpif

Version 2.1.2

April 23, 2015

# Breaking change
Renamed IPSLA entry to operation

Version 2.0.1

March 20, 2015

Bug fix release

Version 2.0.0

March 20, 2015

* Added support for polling CISCO IPSLA statistics via [ipsla:// stanza
* Fixed up exception handling
* Tweaked logging

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Built by

John Oxley

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App Contents: Inputs