[OT] PDC and BDC

Yahoo Archive
1
In a nutshell..

PDC stands for Primary Domain Controller and BDC stands for Backup domain
controller.

You can only have 1 PDC in a network but you can have multiple BDCs. The
role of a domain controller is to validate logons and assign an access token
to the user. When the "token" is assigned to the user it is then used in
future security checks to verify if the user has access to certain network
resources. The token remains with the user until he logs out. That is why
you can change a user's access privileges and the effects not show up for a
while. Until the user logs out and then in he has the old token and the old
rights.

What you described about the workstation and the server sounds a little
different. An NT workstation has two admin accounts when it is a member of
a domain. It has the local admin account and a domain admin account. Every
system on the domain is accessible when the domain admin account is used
however the local admin account grants access to just that workstation.
When you typed the Vantage server password it likely worked because the
workstation is a member of the domain.

It is much more involved but that is about as brief as I think I can get it.


Jim Carnes
IS Administrator
Kenlee Precision Corp
jcarnes@...
1700 Morrell Park Ave
Baltimore, MD 21230




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2
The discussion about PDC and BDC in the previous thread "Win2000 & Exchange 2000" brings up a point of curiosity. Having no idea what PDC and BDC are (never been in a network class since NT was born, networking in college was back in DOS days). Anyway, someone else set up our Vantage server and also an NT workstation which houses our Video Conferencing workstation.

I noticed yesterday when trying to log on to the NT workstation, that the administrator password wasn't working. Then, just on a guess, I typed the password in for our Vantage Server (which was recently changed), and viola! it worked. Nobody changed the password on the NT station (to my knowledge). Are the two somehow connected? Is that what this PDC and BDC are all about?

Can someone (briefly) explain what's going on?

Troy Funte
Liberty Electronics



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