https://community.splunk.com/t5/Getting-Data-In/Upgrade-to-Splunk-v5/m-p/103922#M21872 <P>Yes you can. Per the documentation: "All indexers are backwards compatible with any forwarder and can receive data from any earlier version forwarder. For example, a 4.2 indexer can receive data from a 4.1 forwarder." See <A href="http://docs.splunk.com/Documentation/Splunk/5.0.1/Deploy/Enableareceiver#Compatibility_between_forwarders_and_indexers">Compatibility between forwarders and indexers</A> in the Distributed Deployment Manual.</P> Tue, 29 Jan 2013 23:44:44 GMT ChrisG 2013-01-29T23:44:44Z https://community.splunk.com/t5/Getting-Data-In/Upgrade-to-Splunk-v5/m-p/103921#M21871 <P>Hi Guys,</P> <P>Can I upgrade my central indexer from 4.3.4 to v5.0.1 and keep my universal forwarders at version 4.3.1 ? </P> <P>From a compatibility perspective, will it affect the performance of the forwarders.</P> <P>Please advise if the v5.0.1 indexer is not backwards compatible with 4.3+ version of forwarders</P> Tue, 29 Jan 2013 23:30:17 GMT https://community.splunk.com/t5/Getting-Data-In/Upgrade-to-Splunk-v5/m-p/103921#M21871 asarolkar 2013-01-29T23:30:17Z https://community.splunk.com/t5/Getting-Data-In/Upgrade-to-Splunk-v5/m-p/103922#M21872 <P>Yes you can. Per the documentation: "All indexers are backwards compatible with any forwarder and can receive data from any earlier version forwarder. For example, a 4.2 indexer can receive data from a 4.1 forwarder." See <A href="http://docs.splunk.com/Documentation/Splunk/5.0.1/Deploy/Enableareceiver#Compatibility_between_forwarders_and_indexers">Compatibility between forwarders and indexers</A> in the Distributed Deployment Manual.</P> Tue, 29 Jan 2013 23:44:44 GMT https://community.splunk.com/t5/Getting-Data-In/Upgrade-to-Splunk-v5/m-p/103922#M21872 ChrisG 2013-01-29T23:44:44Z