Splunk® Universal Forwarder

Forwarder Manual

Download manual as PDF

This documentation does not apply to the most recent version of Forwarder. Click here for the latest version.
Download topic as PDF

Compatibility between forwarders and Splunk Enterprise indexers

The following table shows which versions of forwarder and indexer are compatible. A best practice is to use indexers with versions that are the same or higher than forwarder versions.

Determine forwarder-indexer compatibility

The following table shows the versions of forwarder and indexer that can be used together. As a best practice, use indexers that are the same or higher version than the forwarders.

  • An X in a cell indicates that this version of forwarder can send event data to the corresponding version of indexer.
  • An M in a cell indicates that this version of forwarder can send both event data and metrics data to the corresponding version of indexer.
  • An S in a cell indicates that this version of forwarder can send data to this version of indexer after you change the Secure Sockets Layer (SSL)/Transport Layer Security (TLS) version and cipher suite on the forwarder.
  • An empty cell indicates that Splunk does not support sending any type of data from this version of forwarder to the corresponding version of indexer.

This table lists version 5.0 for informational purposes only. Version 5.0 forwarders are technically compatible with higher versions of indexer, but Splunk does not provide support for version 5.0 software. Version 5.0 reached its End of Life on November 30, 2017.

Indexer version
5.0 (not supported) 6.0-6.1 6.2-6.6 7.x
5.0 (not supported) X X S S
6.0-6.1 X X S S
6.2-6.6 S X X
7.x S X M

Metrics forwarding compatibility

Metrics indexing from forwarders is supported only if both indexers and forwarders are at version 7.0.0 or later. There is no support for forwarding metrics data from a 6.6 or earlier forwarder to a 7.0 indexer.

Forwarding compatibility with other features

The following features are available only if both indexers and forwarders are at version 6.x or higher:

  • Dynamic file headers.
  • Forwarding of structured data.
  • Timezone transmission by the forwarder. Additionally, forwarders do not maintain the timezone transmission feature across intermediate forwarding tiers when those tiers consist solely of light or universal forwarders.

For app-specific compatibility restrictions, see the app documentation on Splunkbase.

Example forwarder deployment topologies
How to forward data to Splunk Light

This documentation applies to the following versions of Splunk® Universal Forwarder: 7.2.0, 7.2.1, 7.2.2, 7.2.3, 7.2.4, 7.2.5, 7.2.6, 7.2.7, 7.2.8, 7.2.9, 7.3.0, 7.3.1, 7.3.2, 7.3.3, 7.3.4


Some issue with UF 6.3.0 ( on linux ) communicating to Deployment Server Ver 7.2.0.
Only UF 6.5.0 and Upward worked for us.

December 17, 2019

Where is Splunk 8 in this compatibility matrix?

November 20, 2019

Hi Plaftaric,

We are actually working on a document with that information. We will link to it from here when it is made public. Thanks for your patience.

Malmoore, Splunker
July 24, 2019

It would be useful if there were instructions in "Determine forwarder-indexer compatibility" chapter for how to configure SSL/TLS version and cipher suite on the forwarder (S option).

July 12, 2019

Jimdiconectiv, we made a few updates to the information in conjunction with the latest release of Splunk Enterprise. We'll contact you directly to see if you have specific questions. Thanks!

Andrewb splunk, Splunker
June 6, 2019

Was this page updated recently, Relative to 6 / 3/ 2019 ?

June 3, 2019

Was this documentation topic helpful?

Enter your email address, and someone from the documentation team will respond to you:

Please provide your comments here. Ask a question or make a suggestion.

You must be logged into splunk.com in order to post comments. Log in now.

Please try to keep this discussion focused on the content covered in this documentation topic. If you have a more general question about Splunk functionality or are experiencing a difficulty with Splunk, consider posting a question to Splunkbase Answers.

0 out of 1000 Characters