Open source Netflow analysis for monitoring AS-to-AS traffic

[Brian Knight via NANOG <nanog () nanog org>]

What's presently the most commonly used open source toolset for
monitoring AS-to-AS traffic?

I want to see with which ASes I am exchanging the most traffic across my
transits and IX links. I want to look for opportunities to peer so I can
better sell expansion of peering to upper management. 

Our routers are mostly $VENDOR_C_XR so Netflow support is key.

In the past, I've used AS-Stats [1] for this purpose. However, it is
particularly CPU and disk IO intensive. Also, it has not been actively
maintained since 2017.

InfluxDB wants to sell me [2] on Telegraf + InfluxDB + Chronograf +
Kapacitor, but I can't find any clear guide on what hardware I would
need for that, never mind how to set up the software. It does appear to
have an open source option, however. 

pmacct seems to be good at gathering Netflow, but doesn't seem to
analyze data. I don't see any concise howto guides for setting this up
for my purpose, however. 

I'm aware Kentik does this very well, but I have no budget at the
moment, my testing window is longer than the 30 day trial, and we are
not prepared to share our Netflow data with a third party. 

Elastiflow [3] appears to have been open source [4] at one time in the
past, but no longer. Since it too appears to be hosted, I have the same
objections as I do with Kentik above. 

On-list and off-list replies are welcome. 

Thanks, 

-Brian 
  

Links:
------
[1] https://github.com/manuelkasper/AS-Stats
[2] https://www.influxdata.com/what-are-netflow-and-sflow/
[3] https://www.elastiflow.com/
[4] https://github.com/robcowart/elastiflow?tab=readme-ov-file