ADSM WinNT client could not finish backup?

My adsm server ver 3.1.0.3 and the problem WinNT client ver 3.1.

This client after check/backup 51,000 files then give error:
05/18/2002 22:29:19 ANS1898I ***** Processed    51,000 files *****
05/18/2002 22:29:20 ANS1017E Session rejected: TCP/IP connection failure

05/18/2002 22:29:20 --- SCHEDULEREC OBJECT END BACKUP 05/18/2002 20:00:00
05/18/2002 22:29:20 --- SCHEDULEREC STATUS BEGIN BACKUP 05/18/2002 20:00:00
05/18/2002 22:29:20 Total number of objects inspected:   51,102
05/18/2002 22:29:20 Total number of objects backed up:       32
05/18/2002 22:29:20 Total number of objects updated:          0
05/18/2002 22:29:20 Total number of objects rebound:          0
05/18/2002 22:29:20 Total number of objects deleted:          0
05/18/2002 22:29:20 Total number of objects failed:           0
05/18/2002 22:29:20 Total number of bytes transferred:     1.94 MB
05/18/2002 22:29:20 Data transfer time:                    0.83 sec
05/18/2002 22:29:20 Network data transfer rate:        2,401.23 KB/sec
05/18/2002 22:29:20 Aggregate data transfer rate:          0.32 KB/sec
05/18/2002 22:29:20 Objects compressed by:                    0%
05/18/2002 22:29:20 Elapsed processing time:           01:42:15
05/18/2002 22:29:20 --- SCHEDULEREC STATUS END BACKUP 05/18/2002 20:00:00
05/18/2002 22:29:20 Command will be retried in 20 minutes.
05/18/2002 22:49:20 Retrying scheduled event: BACKUP
05/18/2002 22:49:20 Node Name: PROPDC
05/18/2002 22:49:21 Session established with server ADSM: AIX-RS/6000
05/18/2002 22:49:21   Server Version 3, Release 1, Level 2.0
05/18/2002 22:49:21   Server date/time: 05/18/2002 22:28:16  Last access:
05/18/2002 20:26:00

05/18/2002 22:49:21 --- SCHEDULEREC OBJECT BEGIN BACKUP 05/18/2002 20:00:00
05/18/2002 22:49:21 Incremental backup of volume '\\PROPDC\M$'
05/18/2002 22:50:43 ANS1898I ***** Processed       500 files *****
................................................
05/19/2002 00:31:03 ANS1898I ***** Processed    51,000 files *****
05/19/2002 00:31:04 ANS1017E Session rejected: TCP/IP connection failure

05/19/2002 00:31:04 --- SCHEDULEREC OBJECT END BACKUP 05/18/2002 20:00:00
05/19/2002 00:31:04 --- SCHEDULEREC STATUS BEGIN BACKUP 05/18/2002 20:00:00
05/19/2002 00:31:04 Total number of objects inspected:   51,102
05/19/2002 00:31:04 Total number of objects backed up:        0
05/19/2002 00:31:04 Total number of objects updated:          0
05/19/2002 00:31:04 Total number of objects rebound:          0
05/19/2002 00:31:04 Total number of objects deleted:          0
05/19/2002 00:31:05 Total number of objects failed:           0
05/19/2002 00:31:05 Total number of bytes transferred:        0
05/19/2002 00:31:05 Data transfer time:                    0.00 sec
05/19/2002 00:31:05 Network data transfer rate:            0.00 KB/sec
05/19/2002 00:31:05 Aggregate data transfer rate:          0.00 KB/sec
05/19/2002 00:31:05 Objects compressed by:                    0%
05/19/2002 00:31:05 Elapsed processing time:           01:41:43
05/19/2002 00:31:05 --- SCHEDULEREC STATUS END BACKUP 05/18/2002 20:00:00
05/19/2002 00:31:05 Command will be retried in 20 minutes.
05/19/2002 00:51:05 Retrying scheduled event: BACKUP
05/19/2002 00:51:05 Node Name: PROPDC
05/19/2002 00:51:05 Session established with server ADSM: AIX-RS/6000
05/19/2002 00:51:05   Server Version 3, Release 1, Level 2.0
05/19/2002 00:51:05   Server date/time: 05/19/2002 00:30:01  Last access:
05/18/2002 22:28:16

05/19/2002 00:51:05 --- SCHEDULEREC OBJECT BEGIN BACKUP 05/18/2002 20:00:00
05/19/2002 00:51:05 Incremental backup of volume '\\PROPDC\M$'
05/19/2002 00:52:21 ANS1898I ***** Processed       500 files *****
.........................
05/19/2002 02:32:46 ANS1898I ***** Processed    51,000 files *****
05/19/2002 02:32:47 ANS1017E Session rejected: TCP/IP connection failure

05/19/2002 02:32:48 --- SCHEDULEREC OBJECT END BACKUP 05/18/2002 20:00:00
05/19/2002 02:32:48 --- SCHEDULEREC STATUS BEGIN BACKUP 05/18/2002 20:00:00
05/19/2002 02:32:48 Total number of objects inspected:   51,102
05/19/2002 02:32:48 Total number of objects backed up:        0
05/19/2002 02:32:48 Total number of objects updated:          0
05/19/2002 02:32:48 Total number of objects rebound:          0
05/19/2002 02:32:48 Total number of objects deleted:          0
05/19/2002 02:32:48 Total number of objects failed:           0
05/19/2002 02:32:48 Total number of bytes transferred:        0
05/19/2002 02:32:48 Data transfer time:                    0.00 sec
05/19/2002 02:32:48 Network data transfer rate:            0.00 KB/sec
05/19/2002 02:32:48 Aggregate data transfer rate:          0.00 KB/sec
05/19/2002 02:32:48 Objects compressed by:                    0%
05/19/2002 02:32:48 Elapsed processing time:           01:41:42
05/19/2002 02:32:48 --- SCHEDULEREC STATUS END BACKUP 05/18/2002 20:00:00
05/19/2002 02:32:48 ANS1512E Scheduled event 'BACKUP' failed.  Return code
= 1.
05/19/2002 02:32:48 Sending results for scheduled event 'BACKUP'.
05/19/2002 02:32:48 Session established with server ADSM: AIX-RS/6000
05/19/2002 02:32:48   Server Version 3, Release 1, Level 2.0
05/19/2002 02:32:48   Server date/time: 05/19/2002 02:11:44  Last access:
05/19/2002 00:30:01

05/19/2002 02:32:48 Results sent to server for scheduled event 'BACKUP'.

05/19/2002 02:32:48 Querying server for next scheduled event.
05/19/2002 02:32:48 Node Name: PROPDC
05/19/2002 02:32:49 Session established with server ADSM: AIX-RS/6000
05/19/2002 02:32:49   Server Version 3, Release 1, Level 2.0
05/19/2002 02:32:49   Server date/time: 05/19/2002 02:11:45  Last access:
05/19/2002 02:11:44

05/19/2002 02:32:49 --- SCHEDULEREC QUERY BEGIN
05/19/2002 02:32:49 --- SCHEDULEREC QUERY END
05/19/2002 02:32:49 Next operation scheduled:
05/19/2002 02:32:49
------------------------------------------------------------
05/19/2002 02:32:49 Schedule Name:         BACKUP
05/19/2002 02:32:49 Schedule Name:         BACKUP
05/19/2002 02:32:49 Action:                Incremental
05/19/2002 02:32:49 Objects:
05/19/2002 02:32:49 Options:
05/19/2002 02:32:49 Server Window Start:   20:00:00 on 05/19/2002
05/19/2002 02:32:49
------------------------------------------------------------
05/19/2002 02:32:49 Schedule will be refreshed in 12 hours.
05/19/2002 02:32:49 Schedule will be refreshed in 12 hours.
05/19/2002 14:32:49 Querying server for next scheduled event.
05/19/2002 14:32:49 Node Name: PROPDC
05/19/2002 14:32:50 Session established with server ADSM: AIX-RS/6000
05/19/2002 14:32:50   Server Version 3, Release 1, Level 2.0
05/19/2002 14:32:50   Server date/time: 05/19/2002 14:11:46  Last access:
05/19/2002 02:11:45

05/19/2002 14:32:50 --- SCHEDULEREC QUERY BEGIN
05/19/2002 14:32:50 --- SCHEDULEREC QUERY END
05/19/2002 14:32:50 Next operation scheduled:
05/19/2002 14:32:50
------------------------------------------------------------
05/19/2002 14:32:50 Schedule Name:         BACKUP
05/19/2002 14:32:50 Schedule Name:         BACKUP
05/19/2002 14:32:50 Action:                Incremental
05/19/2002 14:32:50 Objects:
05/19/2002 14:32:50 Options:
05/19/2002 14:32:50 Server Window Start:   20:00:00 on 05/19/2002
05/19/2002 14:32:50
------------------------------------------------------------
05/19/2002 14:32:50 Command will be executed in 7 hours and 12 minutes.
05/19/2002 14:32:50 Command will be executed in 7 hours and 12 minutes.
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  (at the time there is no network problem, because other clients were
still backuping up)
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