2012-10-01 02:05 PM
I'm seeing the same error on many of my filers as well. I'm running 8.1.1 7-Mode
filer:ems.engine.suppressed:debug]:Event 'nbt.nbss.network.error' supressed 1 times in last 96 seconds.
2012-10-01 02:09 PM
Found a possible root cause... NetBios (windows ports 137, 138 (UDP) and 139 (TCP) are used to NetBIOS over TCP. TCP445 is used for SMB over TCP.) being disabled and/or blocked on the domain controller. The fix is to disable NetBios and to reset the DC connection on the filer.
2012-10-01 02:58 PM
The blog post mentions that in some environments NetBios is disabled on Domain Controllers. This would lead to the filer making NetBios requests and not getting a response. Check with your AD team to see if this is the case. I will be checking shortly and will report back if this is the root cause.