Following a recovery of our primary site (due to upgrading to Server 2012) all appears to be working ok apart from none of our secondary sites are updating their SUP. The link state is 'Active' but the last sync attempt and Catalog version are all pre-recovery (ie not up to date). The wsyncmgr.log file on one of the affected secondary sites has very little information - doesn't look like its even tried to check in.
Wakeup for a polling cycle SMS_WSUS_SYNC_MANAGER 28/07/2015 20:33:35 3132 (0x0C3C)
Wakeup for a polling cycle SMS_WSUS_SYNC_MANAGER 28/07/2015 21:33:35 3132 (0x0C3C)
Wakeup for a polling cycle SMS_WSUS_SYNC_MANAGER 28/07/2015 22:33:35 3132 (0x0C3C)
Wakeup for a polling cycle SMS_WSUS_SYNC_MANAGER 28/07/2015 23:33:35 3132 (0x0C3C)
Wakeup by SCF change SMS_WSUS_SYNC_MANAGER 29/07/2015 00:00:08 3132 (0x0C3C)
Wakeup for a polling cycle SMS_WSUS_SYNC_MANAGER 29/07/2015 01:00:13 3132 (0x0C3C)
Wakeup for a polling cycle SMS_WSUS_SYNC_MANAGER 29/07/2015 02:00:13 3132 (0x0C3C)
Wakeup for a polling cycle SMS_WSUS_SYNC_MANAGER 29/07/2015 03:00:13 3132 (0x0C3C)
Wakeup for a polling cycle SMS_WSUS_SYNC_MANAGER 29/07/2015 04:00:13 3132 (0x0C3C)
Wakeup for a polling cycle SMS_WSUS_SYNC_MANAGER 29/07/2015 05:00:13 3132 (0x0C3C)
Wakeup for a polling cycle SMS_WSUS_SYNC_MANAGER 29/07/2015 06:00:13 3132 (0x0C3C)
Wakeup for a polling cycle SMS_WSUS_SYNC_MANAGER 29/07/2015 07:00:13 3132 (0x0C3C)
Wakeup for a polling cycle SMS_WSUS_SYNC_MANAGER 29/07/2015 08:00:13 3132 (0x0C3C)
Wakeup for a polling cycle SMS_WSUS_SYNC_MANAGER 29/07/2015 09:00:14 3132 (0x0C3C)
Wakeup for a polling cycle SMS_WSUS_SYNC_MANAGER 29/07/2015 10:00:14 3132 (0x0C3C)
Wakeup for a polling cycle SMS_WSUS_SYNC_MANAGER 29/07/2015 11:00:14 3132 (0x0C3C)
SMS_EXECUTIVE started SMS_WSUS_SYNC_MANAGER as thread ID 3256 (0xCB8). SMS_WSUS_SYNC_MANAGER 29/07/2015 11:46:06 1372 (0x055C)
Log level 2 SMS_WSUS_SYNC_MANAGER 29/07/2015
11:46:06 3256 (0x0CB8)
Wakeup by SCF change SMS_WSUS_SYNC_MANAGER 29/07/2015 11:46:23 3256 (0x0CB8)
Wakeup by SCF change SMS_WSUS_SYNC_MANAGER 29/07/2015 12:20:15 3256 (0x0CB8)
Wakeup by SCF change SMS_WSUS_SYNC_MANAGER 29/07/2015 12:20:25 3256 (0x0CB8)
Wakeup for a polling cycle SMS_WSUS_SYNC_MANAGER 29/07/2015 13:20:30 3256 (0x0CB8)
Wakeup by SCF change SMS_WSUS_SYNC_MANAGER 29/07/2015 13:39:18 3256 (0x0CB8)
Thread terminated by service request. SMS_WSUS_SYNC_MANAGER 29/07/2015 14:07:06 3256 (0x0CB8)
SMS_EXECUTIVE started SMS_WSUS_SYNC_MANAGER as thread ID 3356 (0xD1C). SMS_WSUS_SYNC_MANAGER 29/07/2015 14:10:20 2024 (0x07E8)
Log level 2 SMS_WSUS_SYNC_MANAGER 29/07/2015
14:10:20 3356 (0x0D1C)
Wakeup by SCF change SMS_WSUS_SYNC_MANAGER 29/07/2015 14:10:40 3356 (0x0D1C)
Wakeup for a polling cycle SMS_WSUS_SYNC_MANAGER 29/07/2015 15:10:45 3356 (0x0D1C)
Wakeup for a polling cycle SMS_WSUS_SYNC_MANAGER 29/07/2015 16:10:45 3356 (0x0D1C)
If anyone can point me in the right direction it would be really appreciated!