VCs, MaxNumberVCs, SessionKey

[Raghu Iyer]

Hi,

Can a SMB expert help me understand how VcNumber, 
MaxNumberVCs, SessionKey are used in the SMB protocol
with some examples and commands that can be issued
from a NT/W2K client to a NT/W2K/Samba Server to
experiment with.

Is there a good reference that can illustrate the concepts
behind these parameters ? I have gone through the
CIFS mailing list on discuss.microsoft.com and have a
very hazy idea. I have not been able to produce sessions 
where - MaxNumberVCs is > 1 OR where SessionKey 
is != 0 OR where VcNumber is != 0. So I fail to appreciate
under what circumstances these parameters change.

Thanks in Advance,
Raghu