3472294 - Communication link failure;-10709 Connection failed (RTE:[] Proxy server connect: Network unreachable

• Table Replication is terminating between an on-premise HANA DB and a SAP HANA Cloud Tenant.
• The On-Premise System's indexserver trace reveals that the table replication is getting terminated :
  
  

  [117446]{-1}[948/-1] 2024-05-06 13:49:24.921687 i TraceContext     TraceContext.cpp(01367) : UserName=, StatementExecutionID=844433966286409
  [117446]{-1}[948/-1] 2024-05-06 13:49:24.921687 e Async_Rep        LogSender.cpp(00177) : [Send RepLog] exception thrown: internal error
  [117446]{-1}[910/22295109944] 2024-05-06 13:49:24.922843 w Async_Rep        ReplicationManager.cpp(05365) : Could not resolve replica node from the given turn off request. 
  [117446]{-1}[910/22295109944] 2024-05-06 13:49:24.922926 e Async_Rep        ReplicationManager.cpp(06069) : turnOffAsyncReplication is requested (turn off reason: EXCEPTION, is_src_volume= 0, rep_vid = (2053, -1), volume_id_=2, table_id = (-1, 0), requester_vid = 2), exclusiveLock = 1, sharedLock = 0
  [117446]{-1}[910/22295109944] 2024-05-06 13:49:24.924246 e Async_Rep        ReplicationManager.cpp(06256) : turnOffAsyncReplicationSource is called (turn off reason = EXCEPTION, rep_vid = (2053, -1), requester_vid = 2)
  [117446]{-1}[910/22295109944] 2024-05-06 13:49:24.924334 e Async_Rep        ReplicationManager.cpp(06339) : turnOffAsyncReplicationSource is finished (turn off reason = EXCEPTION, rep_vid = (2053, -1), table_id = (-1, 0))
  [117446]{-1}[910/22295109944] 2024-05-06 13:49:24.924337 e Async_Rep        ReplicationManager.cpp(06201) : turnOffAsyncReplication is finished (turn off reason = EXCEPTION, rep_vid = (2053, -1), table_id = (-1, 0))
  [54912]{-1}[910/22295109944] 2024-05-06 13:49:24.924347 i TraceContext     TraceContext.cpp(01367) : UserName=, StatementExecutionID=844433966286436
  [54912]{-1}[910/22295109944] 2024-05-06 13:49:24.924347 w Async_Rep        ReplicationManager.cpp(00864) : create runtimedump by ReplicationManager (reason: table_replication_turn_off)
  
  Dumps like these may present too : indexserver_host.port.rtedump.20240506-134924.0141742.table_replication_turn_off.trc

• The HANA Cloud system indexserver trace shows that the destination address is unreachable :
   
  

  [1772]\{216297\}[3850/-1]<> 2024-05-06 13:59:38.584659 e CrossDBATR       qx_remote_table_replication.cc(04900) : error occurred when enabling remote table replica: Unable to connect remote source: 
  [SAP AG][LIBODBCHDB SO][HDBODBC] Communication link failure;-10709 Connection failed (RTE:[89133] Proxy server connect: Network unreachable (HANA Cloud IP:port -> 'on-prem HDB target domain-IP':sql port))

SAP HANA, Platform Edition 2.0
SAP HANA Cloud

KBA , HAN-CLS-HC , HANA Cloud Services HANA Cloud , HAN-DB , SAP HANA Database , BC-MID-SCC , SAP Cloud Connector On-Demand/On-Premise Connectivity , Problem