2495801 - CreateRoute failed during HADR replication setup - SRS

• Run setuphadr to setup HADR of SAP Replication Server (SRS).
• The task got stuck at Create Route with error in RMA errorlog:
  CreateRoute       Task Name              Create Route                   
  CreateRoute       Task State               Error   
  CreateRoute       Short Description     Create the route between two Replication Servers. 
  CreateRoute       Long Description      Waiting 20 seconds: Continuing to wait for the route from Replication Server 'SD5_REP_SITE2' to Replication Server 'SD5_REP_SITE1' to become active.   CreateRoute       Short Description     Create the route between two Replication Servers.
  CreateRoute       Long Description      Waiting 20 seconds: Continuing to wait for the route from Replication Server 'SD5_REP_SITE2' to Replication Server 'SD5_REP_SITE1' to become active. 
  CreateRoute       Failing Command               rs_helproute SD5_REP_SITE2 
  CreateRoute       Failing Command Error MessageThe route from Replication Server 'SD5_REP_SITE2' to Replication Server 'SD5_REP_SITE1' did not become active and the setup process has timed out. 
  CreateRoute       Corrective Action             The route from Replication Server 'SD5_REP_SITE2' to Replication Server 'SD5_REP_SITE1' must be active before the setup process can proceed. Use the rs_helproute command to determine the state of the route. Once the route is active, restart the setup process.
  CreateRoute       Hostname                      xxxxx.xxxx.com                                                                                                                         
  Error: Setup Replication...Fail

• SAP Replication Server 15.7.1 SP 305 or higher for Linux
• SAP Replication Server 16.0

KBA , BC-SYB-REP-SAP , Replication with SAP Suite / SAP BW , How To