I have a doubt regarding the information of server displayed in the Licensing [settings-->Licensing]. I have a forwarder which is configured to the Forwarder license group, but the information is displayed as INDEXER NAME. May I know the why it is displayed as an indexer, even though it is a forwarder..??
Every splunk instance (except Universal Forwarders) is an indexer, license master, deployment server, search head deployer and a search head by default. When looking at local license usage, it will show as an indexer regardless of what it is because every splunk instance is indeed an indexer even when it is not used as an indexer. You're basically splitting hairs on nomenclature when there really is no issue.
To summarize, every splunk instance is an indexer (besides universal forwarders) even if the instance is forwarding the data it "indexes" to other peers.