So Russ doesn't feel so bad, I've been to many
customers that decided to specify preferred BH's. 
When I ask why I normally get any of the following
responses.
1) They want a predictable DC to goto when they need
to force replication between sites.  This is
relatively easy to ween them off of.
2) Like Russ, they thought it would either speed up
replication or "fix" it.  When I try to dig into what
was broken that doing this might have fixed they have
no clue.
3) Why not, it's in the GUI.  I can normally shame
them into undoing it.
4) Um, what's a preferred BH?  These are mindless
sheep that are easily controlled and will do whatever
I tell them, so it's an easy fix.

To be fair, there was 1 customer that actually had
firewalls between Sites and were trying to limit
communiation through specific DC's.  They hadn't
specified enough preferred BH's to account for each
partition but you can't have everything.

--- Dean Wells <[EMAIL PROTECTED]> wrote:

> Without wishing to labor the point Russ, what aspect
> of replication 'speed'
> was thought to be improved?  I ask as I often
> lecture on AD (and related
> technologies) and am interested to understand some
> of the misconceptions.
> --
> Dean Wells
> MSEtechnology
> * Email: dwells <mailto:[EMAIL PROTECTED]>
> @msetechnology.com
>  <http://msetechnology.com/>
> http://msetechnology.com
> 
>  
> 
>   _____  
> 
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On
> Behalf Of Rimmerman, Russ
> Sent: Monday, August 08, 2005 6:08 PM
> To: [email protected]
> Subject: RE: [ActiveDir] Preferred Bridgeheads
> 
> 
> We thought it would "help" with replication speed. 
> I guess it was more of a
> WAG.
> 
>   _____  
> 
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On
> Behalf Of Dean Wells
> Sent: Monday, August 08, 2005 2:13 PM
> To: Send - AD mailing list
> Subject: RE: [ActiveDir] Preferred Bridgeheads
> 
> 
> If you constrain the list of bridgeheads you may be
> incapable of replicating
> an app. NC in and out of a site since in order to
> replicate a particular
> partition, the bridgehead in question must hold a
> copy of it ... if the
> preferred list contains only 2K DCs, that can't
> happen .. for the most part
> ... a 2K3 ISTG will override your choices and
> allocate a suitable bridgehead
> for you, it will however whine and whine and whine
> and ... you get the idea.
>  
> I've found only a few scenarios in which they proved
> valuable ... may I ask
> why you're using them?
> --
> Dean Wells
> MSEtechnology
> * Email: dwells <mailto:[EMAIL PROTECTED]>
> @msetechnology.com
>  <http://msetechnology.com/>
> http://msetechnology.com
> 
>  
> 
>   _____  
> 
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On
> Behalf Of Rimmerman, Russ
> Sent: Monday, August 08, 2005 3:03 PM
> To: [email protected]
> Subject: [ActiveDir] Preferred Bridgeheads
> 
> 
> We're almost all Win2k3 Domain Controllers, have a
> few left to upgrade.
>  
> Question is, we have at least one DC at each site
> configured as a preferred
> bridgehead for IP.  Is this not a good idea?  Is it
> best to not prefer any
> bridgeheads and let AD do its job?  I'm seeing a lot
> of event ID 1567's
> about it as well.
>  
> Thanks
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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