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site active directory brandwidth [message #156079] Wed, 10 June 2009 06:03 Go to next message
slardy  is currently offline slardy  France
Messages: 2
Registered: June 2009
Junior Member
Hello,

I'm french student and I don't wrote english very nice. Sorry.

I saw in several documentation (technet, book...), site Active directory are
used for low and expensive connection.

I would like to know the pourcent rate of impact of the replication to the
brandwidth connection.

And if possible, what is the flow of the "low network" which talk in these
documentation (56k/128k/256k/ more....).

Thanks for your answers

slardy
Re: site active directory brandwidth [message #156081 is a reply to message #156079] Wed, 10 June 2009 06:53 Go to previous messageGo to next message
florian  is currently offline florian  Switzerland
Messages: 484
Registered: July 2009
Senior Member
Howdie!

"slardy" wrote:
> I saw in several documentation (technet, book...), site Active directory
> are used for low and expensive connection.

It is generally a good idea to match the physical network with the Active
Directory site setup - not only the slow and expensive links.

> I would like to know the pourcent rate of impact of the replication to the
> brandwidth connection.
>
> And if possible, what is the flow of the "low network" which talk in these
> documentation (56k/128k/256k/ more....).

The metrics (56k, 128k..) are just an indicator here. There is no 1:1
representation. In general, the bandwidth Active Directory uses for
replication depends on how much data is actually changed on the domain
controllers. If nothing changes, there's no data replicated across the links
to the other site. If there's a mass user creation, you're likely to see a
small bandwidth chew up by AD replication.

The numbers you put into the link "cost" field in Active Directory sites and
services is just a relative number (compared to other links) so that the
AD-internal service (the Knowledge Consistency Checker, KCC) can create
routes to all sites. The cost you put into the field doesn't change the
speed or the likeliness, replication will occur.

Cheers,
Florian
--
Microsoft MVP - Group Policy
eMail: prename [at] frickelsoft [dot] net.
blog: http://www.frickelsoft.net/blog.
Maillist (german): http://frickelsoft.net/cms/index.php?page=mailingliste
Re: site active directory brandwidth [message #156088 is a reply to message #156079] Wed, 10 June 2009 08:41 Go to previous message
pbbergs  is currently offline pbbergs  United States
Messages: 1024
Registered: July 2009
Senior Member
You could have a T3 network and it could be clogged with activity unrelated
to AD, so any AD replication traffic could be very slow. At the same time
you could have a wide open 256k connection that can easily replicate the
traffic given to it.

The questions you pose are not qualified enough since how big a domain are
you using, how many changes are occuring, etc...

--
Paul Bergson
MVP - Directory Services
MCTS, MCT, MCSE, MCSA, Security+, BS CSci
2008, 2003, 2000 (Early Achiever), NT4

http://www.pbbergs.com

Please no e-mails, any questions should be posted in the NewsGroup This
posting is provided "AS IS" with no warranties, and confers no rights.

"slardy" <sylvain.lardy@groupe-mb.com.utrf> wrote in message
news:uQiQoKb6JHA.1424@TK2MSFTNGP02.phx.gbl...
> Hello,
>
> I'm french student and I don't wrote english very nice. Sorry.
>
> I saw in several documentation (technet, book...), site Active directory
> are used for low and expensive connection.
>
> I would like to know the pourcent rate of impact of the replication to the
> brandwidth connection.
>
> And if possible, what is the flow of the "low network" which talk in these
> documentation (56k/128k/256k/ more....).
>
> Thanks for your answers
>
> slardy
>
>
>
>
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