Splunk Search

How to build a lookup table based on a condition?

dgoamaral
Engager

Hello all,

I can't figure out how to build a lookup with a condition. I have the following table which is my base search:

SubnetName     ip_address
Subnet_ABCD   10.177.99.53
Subnet_1234     10.8.183.3
Subnet_1234     10.8.182.233
Subnet_ABCD    10.177.83.244

And the following lookup table:

Last_SubnetName SubnetID    NetStart    NetEnd
Subnet_A    10.177.0.0/16   10.177.0.1  10.177.255.254
Subnet_B    10.8.0.0/16 10.8.0.1    10.8.255.254
Subnet_B    192.16.0.0/24   192.168.0.1 192.168.0.254

This is the closest I got after reading several articles, but as you can see, I got no luck. The result is simply blank every time I try it.

index=mybasesearch  ( [| inputlookup myLookupTable.csv | table Last_SubnetName,SubnetID,NetStart,NetEnd ]  AND last_ip_address
>=NetStart AND last_ip_address<=NetEnd)

Need your help to proceed.

Labels (1)
0 Karma

richgalloway
SplunkTrust
SplunkTrust

What results are you trying to get?

---
If this reply helps you, Karma would be appreciated.
0 Karma
Get Updates on the Splunk Community!

Index This | When is October more than just the tenth month?

October 2025 Edition  Hayyy Splunk Education Enthusiasts and the Eternally Curious!   We’re back with this ...

Observe and Secure All Apps with Splunk

  Join Us for Our Next Tech Talk: Observe and Secure All Apps with SplunkAs organizations continue to innovate ...

What’s New & Next in Splunk SOAR

 Security teams today are dealing with more alerts, more tools, and more pressure than ever.  Join us for an ...