Seeing all the forwarded data on indexer but universal forwarder is saying "configured but inactive"

Hi splunkers , I have forwarded the data using universal forwarder to heavy forwarder and then to indexer , where i am seeing all my data of agent server. But, the problem is I don't know why UF is still saying that "configured but inactive " At universal forwarder end i am seeing in splunkd.log : 08-14-2018 07:03:34.401 -0400 INFO TcpOutputProc - Initializing connection for non-ssl forwarding to 165.113.21.66:9997 08-14-2018 07:03:34.538 -0400 INFO TcpOutputProc - Connected to idx=165.113.21.66:9997, pset=0, reuse=0. 08-14-2018 07:14:15.696 -0400 INFO TcpOutputProc - Initializing connection for non-ssl forwarding to 165.113.21.66:9997 08-14-2018 07:14:15.814 -0400 INFO TcpOutputProc - Connected to idx=165.113.21.66:9997, pset=0, reuse=0. 08-20-2018 06:12:36.906 -0400 INFO TcpOutputProc - Initializing connection for non-ssl forwarding to 165.113.21.66:9997 08-20-2018 06:12:37.038 -0400 INFO TcpOutputProc - Connected to idx=165.113.21.66:9997, pset=0, reuse=0. and this also (don't know why) [root@abc.com bin]# ./splunk list forward-server Active forwards: None Configured but inactive forwards: 165.113.21.66:9997 and at heavy forwarder end [root@def.com bin]# ./splunk display listen Your session is invalid. Please login. Splunk username: admin Password: Receiving is enabled on port 9997 in splunkd.log at heavy forwarder end : 08-14-2018 07:04:26.163 -0400 INFO TcpInputProc - clustering is enabled but ACK not enabled on forwarder=165.113.20.239 Everything is connected. But still, why am I seeing this "Configured but inactive forwards:" I don't know why, and i also have tried telnet from universal forwarder for heavy forwarder server [root@abc.com bin]# telnet def.com 9997 Trying def.com... Connected to def.com. Escape character is '^]'. Guys please help. Although, i am receiving all my data at indexer, but still i want to know why i am seeing the "configured but not active" entry in universal forwarder