We have noticed an increasing demand for SMB / CIFS troubleshooting. SMB/CIFS is widely used to access and store files for both user activities, and as part of application chains. It has become critical in numerous environments.
SMB / CIFS is a complex Protocol:
To be able to identify an erroneous transaction, let’s start by understanding the different steps of an SMB transaction that works properly.
Let’s start with a very simple example: a user wants to put a file on a remote folder: here is the list of SMB transactions that are required to complete a simple user operation such as this one:
To troubleshoot any such transaction which would be slow or run into an error, you would need to:
If you are willing to investigate further the best practices to troubleshoot performance issues in SMB / CIFS exchanges, you might want to take a look at this guide: best practices for SMB / CIFS performance troubleshooting.