Here is a sample from the receiving side:
DEBUG 2017-03-07 14:58:11,107 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler.runImpl:546) - /<IP Address>:<port>: ensuring point LGCY_OZ2_PB2_PDM, index: 468
DEBUG 2017-03-07 14:58:11,107 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler.ensurePointV5:788) - /<IP Address>:<port>: ensuring point LGCY_OZ2_PB2_PDM
DEBUG 2017-03-07 14:58:11,107 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler.ensurePointV5:796) - /<IP Address>:<port>: point LGCY_OZ2_PB2_PDM already exists in RT list
DEBUG 2017-03-07 14:58:11,107 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler.updatePointV5:853) - /<IP Address>:<port>: saving point LGCY_OZ2_PB2_PDM updates
DEBUG 2017-03-07 14:58:11,108 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler.runImpl:556) - /<IP Address>:<port>: confirmed LGCY_OZ2_PB2_PDM with client
INFO 2017-03-07 14:58:11,108 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler.runImpl:565) - /<IP Address>:<port>: point init done
DEBUG 2017-03-07 14:58:11,505 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler.updatePointHierarchy:927) - /<IP Address>:<port>: updatePointHierarchy
DEBUG 2017-03-07 14:58:11,513 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler.updatePointHierarchy:934) - /<IP Address>:<port>: updatePointHierarchy: count=468
DEBUG 2017-03-07 14:58:11,523 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler.updatePointHierarchy:990) - /<IP Address>:<port>: updatePointHierarchy: done
DEBUG 2017-03-07 14:58:42,618 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler.runImpl:670) - /<IP Address>:<port>: Received test packet
DEBUG 2017-03-07 14:59:42,594 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler.runImpl:670) - /<IP Address>:<port>: Received test packet
DEBUG 2017-03-07 15:00:22,831 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=0 from task: 0, pointId=1801, xid=LGCY_OZ1_RM12_OFF, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:22,831 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 0 from task: 0
DEBUG 2017-03-07 15:00:22,831 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=0 from task: 2, pointId=1893, xid=LGCY_OZ2_RM13_CONC, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:22,831 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=0 from task: 1, pointId=1847, xid=LGCY_OZ3_PB_PDM, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:22,832 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 0 from task: 1
DEBUG 2017-03-07 15:00:22,835 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 0 from task: 2
DEBUG 2017-03-07 15:00:22,835 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=0 from task: 5, pointId=2031, xid=LGCY_OZ1_RM5_DUTY, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:22,835 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 0 from task: 5
DEBUG 2017-03-07 15:00:22,836 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=0 from task: 7, pointId=2123, xid=LGCY_OZ3_RM8_INTR, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:22,836 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=0 from task: 9, pointId=2575, xid=LGCY_OZ2_PB2_PDM, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:22,836 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 0 from task: 7
DEBUG 2017-03-07 15:00:22,836 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 0 from task: 9
DEBUG 2017-03-07 15:00:22,836 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=0 from task: 4, pointId=1985, xid=LGCY_OZ3_RM3_INSTALLED, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:22,836 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 0 from task: 4
DEBUG 2017-03-07 15:00:22,837 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=0 from task: 6, pointId=2077, xid=LGCY_OZ2_RM6_SETPOINT, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:22,837 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=0 from task: 8, pointId=2169, xid=LGCY_OZ1_TD2_REFLAMP, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:22,837 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 0 from task: 6
DEBUG 2017-03-07 15:00:22,837 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=0 from task: 3, pointId=1939, xid=LGCY_OZ2_RM16_OFF, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:22,837 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 0 from task: 8
DEBUG 2017-03-07 15:00:22,837 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 0 from task: 3
DEBUG 2017-03-07 15:00:23,390 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=1 from task: 9, pointId=2574, xid=LGCY_OZ1_PB2_PDM, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:23,390 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=1 from task: 5, pointId=2030, xid=LGCY_OZ3_RM5_CONC, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:23,390 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=1 from task: 2, pointId=1892, xid=LGCY_OZ2_RM13_ABOVESP, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:23,390 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=1 from task: 7, pointId=2122, xid=LGCY_OZ2_RM8_INTR, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:23,390 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 1 from task: 9
DEBUG 2017-03-07 15:00:23,390 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 1 from task: 7
DEBUG 2017-03-07 15:00:23,390 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=1 from task: 1, pointId=1846, xid=LGCY_OZ2_PB_PDM, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:23,390 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 1 from task: 2
DEBUG 2017-03-07 15:00:23,390 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 1 from task: 5
DEBUG 2017-03-07 15:00:23,390 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 1 from task: 1
DEBUG 2017-03-07 15:00:23,390 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=1 from task: 0, pointId=1800, xid=LGCY_OZ1_RM12_INTR, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:23,391 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 1 from task: 0
DEBUG 2017-03-07 15:00:23,391 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=1 from task: 6, pointId=2076, xid=LGCY_OZ1_RM6_SETPOINT, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:23,391 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=1 from task: 3, pointId=1938, xid=LGCY_OZ1_RM16_OFF, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:23,391 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.runImpl:1060) - /<IP Address>:<port>: Processing range count request: id=1 from task: 8, pointId=2168, xid=LGCY_OZ3_TD2_COMOK, from=1488916230001, to=1488916500000
DEBUG 2017-03-07 15:00:23,391 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 1 from task: 6
DEBUG 2017-03-07 15:00:23,391 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 1 from task: 8
DEBUG 2017-03-07 15:00:23,391 (com.serotonin.m2m2.persistent.ds.PersistentDataSourceRT$TcpConnectionHandler$RangeCountHandler.run:1030) - /<IP Address>:<port>: Finished range count request 1 from task: 3
No failures to note as of yet. I'll stretch the timeouts and see if that helps.