All Apps and Add-ons

Stream App + Netscaler AddOn: Why are Netflow elements not decoded?

Stan816
Explorer

Hello everyone,

I am currently working on the integration of Citrix Netscaler to Splunk. I`d like to see the App-/Netflow data in Splunk to use those for traffic balancing.

My setup is as follows:

  • Splunk v8.2.4
  • Splunk App for Stream v 8.0.2 (and the TAs as well)
  • Splunk Add-on for Citrix NetScaler v8.1.1

I was following the docs and installed as described. The files from TA Citrix are copied to stream app (https://docs.splunk.com/Documentation/AddOns/released/CitrixNetScaler/ConfigureIPFIXinputs).

Eventhough - the netflow elements appear, they are not getting decoded and I am seeing this:

Stan816_0-1651758303343.png

Following IANA i was able to figure out that "5951" is ID of manufacturer: https://www.iana.org/assignments/enterprise-numbers/enterprise-numbers (which is Netscaler in this case).
Unfortunately i did not find any documentation on the decoding procedure for those bytes.

While trying to understand what the streamfwd binary does and how the solution is embedded into the python scripts, I stumbled over one interessting fact. in $SPLUNK_HOME/etc/apps/splunk_app_stream/bin/splunk_app_stream/models/vocabulary.py there is a refernce to this URL:
"http://purl.org/cloudmeter/config"
which seems to be involved into decoding somehow. However when i try to open this, it shows 404.

Coming back to the original issue: those Appflows are not decoded. Is there a known solution for this? If not, does anyone know, where those element definitions may be found?

 

Many thanks in advance!

Best

Stan

 

PS: Seems to be related to https://community.splunk.com/t5/All-Apps-and-Add-ons/How-to-decode-netflow-elements-Key-Values-pair/...

 

Tags (1)
0 Karma

jodros
Builder

I am having the same issue.  Did you find a resolution?

0 Karma
Get Updates on the Splunk Community!

Splunk + ThousandEyes: Correlate frontend, app, and network data to troubleshoot ...

 Are you tired of troubleshooting delays caused by siloed frontend, application, and network data? We've got a ...

Splunk Observability for AI

Don’t miss out on an exciting Tech Talk on Splunk Observability for AI!Discover how Splunk’s agentic AI ...

🔐 Trust at Every Hop: How mTLS in Splunk Enterprise 10.0 Makes Security Simpler

From Idea to Implementation: Why Splunk Built mTLS into Splunk Enterprise 10.0  mTLS wasn’t just a checkbox ...