Deployment Architecture

Splunk Enterprise / Universal Forwarder version compatibility

fxyfrank_acn
Explorer

Hi There,

I am planning to upgrade my Splunk Enterprise (currently 6.5.5) and Universal Forwarders (currently 6.3.3) to 7.3.0.

Is Splunk Enterprise 7.3.0 compatible with Universal Forwarder 6.3.3 and and vice versa?

Asking this because there might be a short period of time when some of my Splunk components are still using older version while some of them have already upgraded to the latest.

Thank you!

0 Karma

esix_splunk
Splunk Employee
Splunk Employee

6.3.X can send to 7.3.x without any problems, both UF and HF. Just be aware of the cipher changes that are documented, even though they don't apply as long as your indexers are 7.x+.

0 Karma

KailA
Contributor

Hi !

I think this doc will tell you what you want to know : https://docs.splunk.com/Documentation/Forwarder/7.3.0/Forwarder/Compatibilitybetweenforwardersandind...

From what I read, it should be good for you, you just can't send metrics 🙂

0 Karma

fxyfrank_acn
Explorer

Does this compatibility matrix also apply to Universal Forwarders and Heavy Forwarders? Since I'm currently using HF as the deployment server communicating with UFs. Thanks!

0 Karma

KailA
Contributor

I'm not 100% sure, but for me, your Heavy Forwarder should be consider more like an indexer than a forwarder, you should upgrade it in the same time that you upgrade your Splunk Enterprise to avoid any problems.

0 Karma
Get Updates on the Splunk Community!

Splunk Search APIを使えば調査過程が残せます

   このゲストブログは、JCOM株式会社の情報セキュリティ本部・専任部長である渡辺慎太郎氏によって執筆されました。 Note: This article is published in both Japanese ...

Integrating Splunk Search API and Quarto to Create Reproducible Investigation ...

 Splunk is More Than Just the Web Console For Digital Forensics and Incident Response (DFIR) practitioners, ...

Congratulations to the 2025-2026 SplunkTrust!

Hello, Splunk Community! We are beyond thrilled to announce our newest group of SplunkTrust members!  The ...