Network and Storage Protocols

nbt.nbss.network.error - what is tis

mdvillanueva
6,950 Views

Hello Expert,

I am seeing quite alot of this:

nbt.nbss.network.error being suppressed. Is this a cause for concern?

Thanks,

Maico

6 REPLIES 6

chriszurich
6,950 Views

I'm seeing the same error on many of my filers as well.  I'm running 8.1.1 7-Mode

Exact Error:

filer:ems.engine.suppressed:debug]:Event 'nbt.nbss.network.error' supressed 1 times in last 96 seconds.

mdvillanueva
6,950 Views

I found out from Netapp that it is a bug and not yet resolved. They told me to just ignore it for now.

chriszurich
6,950 Views

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.

Reference / Source: http://sysadmin-dayindayout.blogspot.com/2009/04/netapp-errors-nbt-cannot-send-broadcast.html

mdvillanueva
6,950 Views

disable netbios where?

chriszurich
6,950 Views

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.

mdvillanueva
6,950 Views

I don’t know what type of effect disabling it would have when browsing using
servername<file:///
servername>

Please give us an update. Thanks.

Public