samba - Sep 2011 - QoS to prioritise netlogon traffic over SMB file shares

Exactly what it says in the subject really. Looking for a way to prioritise the
netlogon requests on the network above the file share transfers. We have a few
desktops that are used for design files and are connected by 1Gbe along with a
fleet of WiFi (802.11g generally) enabled laptops. Trying to logon while the
desktops are transferring large files can cause some nasty issues.

Thinking about giving the Desktops a dedicated port for their connection, but
would also like to be able to QoS prioritise. What ports do all of the samba
services run over?

Thanks
Tom Harvey