Re: AD Sites
- From: "Cary Shultz" <cwshultz@xxxxxxxx>
- Date: Wed, 1 Mar 2006 22:41:03 -0500
Mel,
Had a very long and hard day. I will look at this tomorrow....when I will
hopefully be able to help you.
Maybe PaulW will jump in. He would be a big assistance in this!
--
Cary W. Shultz
Roanoke, VA 24012
"Mel" <Mel@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:7E1B5D4D-F103-4238-B90E-B59B41625779@xxxxxxxxxxxxxxxx
thanks Cary,
I understand the importance of assigning the subnets to the proper site
and
it is a normal practice for me to do so. I needed clarification in
regards
to designing an elaborate site structure or keeping it simple with only
one
site (all DC's and subnets associated to the single site) given the
specific
parameters mentioned in the earlier post.
At issue is the divergance from MS Best Practices becuase T-1 lines are
involved. I believe the sticking point for me is whether or not the
scenario
given within MS Best Practices for Sites and Services applies in this case
as
it pertains to setting up different sites based on physical locations. I
believe that MS BP's are guides, however the company I work for is very
particular when it comes to MS Network Designs IF MS has a BP for any part
of
the design/implementation.
If I undestand your post correctly then a single site structure would be
fine in this specific school district scenario?
thanks,
Mel
"Cary Shultz" wrote:
To jump in here for a second...
I used to be responsible for a single domain, two-site location where the
offices were exactly .5 miles apart from each other. Funny how it took
almost 25 minutes to drive that distance! But, that happens on Wilshire
Blvd!
So, to answer your question...no, it should not 'violate' any Best
Practices.
And Laura was dead-on with creating the Subnets and then associating the
Subnet(s) with a Site. Too many times people do not do this.
As you probably saw, the KCC (Knowledge Consistency Checker) and its
friend
the ISTG (Intersite Topology Generator) work better when you create the
Subnets and associate each Subnet to the correct Site.
--
Cary W. Shultz
Roanoke, VA 24012
"Mel" <Mel@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:84249D2E-A4D8-4A18-BF4D-150C49D33EE2@xxxxxxxxxxxxxxxx
Laura,
If I could add a question please...does it violate the Best Practices
of
setting up Sites and Services IF the buildings are within a 30-40 mile
radius
of each other? These are high speed connections between the schools
and
the
central office (T1 lines, no split tunneling - all traffic flows thru
CO
for
content filtering and Internet access).
The reading indicates setting up sites and services if large geographic
areas are involved and connections that may not be reliable or fast; in
our
case the school district I support has the above scenario for
connections
(T-1's). As MS Best Practices are followed for all accounts we
support,
this
is a contentous design issue within our company among the different
support
techs/engineers. Does a school district with the above scenario fit
the
Best
Practices established by MS?
thanks,
Mel
"Laura E. Hunter [MVP]" wrote:
Active Directory Sites are used to map the behaviour of AD
(particularly
replication) to your physical network layout. The best way to think
of
sites and site links is this: sites correspond to your Local Area
Networks,
site links correspond to WAN links between your LANs. You can have a
single
AD site that corresponds to multiple physical locations, so long as
the
link
between these locations is a reliable, high-speed one.
When determining whether you want to configure a single site or
multiple
sites, remember that Active Directory uses two different schedules for
replication: intrasite replication and intersite replication.
Intrasite
replication occurs rapidly, changes get replicated to other DCs almost
immediately. Intersite replication takes place on a particular
schedule,
where changes will only be replicated every X minutes or hours between
sites - you need to balance the need to minimize replication traffic
over
WAN links against the convenience of having your directory changes
replicated as soon as they occur.
If you decide to configure multiple AD sites, be certain to configure
your
subnets so that they correspond to the correct site. Active Directory
and
clients such as Windows 2000 and XP are "site-aware", which means that
they
will use the information that you've configured in AD Sites & Services
to
determine which domain controller to log onto. You can look here for
more
information to get you started:
http://www.microsoft.com/technet/prodtechnol/windowsserver2003/technologies/directory/activedirectory/stepbystep/adsrv.mspx
HTH
--
Laura E. Hunter: MVP Windows Server - Networking
All replies to newsgroup, please
Post provided as-is, no warranties expressed or implied
"Dbarnaby" <Dbarnaby@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:D23BF426-FF71-4339-9FF0-434473649979@xxxxxxxxxxxxxxxx
I work for a school district. I have 16 buildings in my district. We
have
recently connected all the bulidings with fiber (Buildings had no
connectivity to each other), and we are moving from Novell to a MS
2003
AD
Single Domain. We will have about 3000 users in the AD, but we one
have
under
1500 computers in the district. all switches are HP and layer 4
switches
are
at the core, we are currently one subnet (172.16.x.x). We are about
a
half
way done. That said, the question, is there a need for me to setup
sites
in
AD or is seting up routing on the switches all that I need. A vendor
we
have
said that there should not be any more that 900 devices on a
segment.
.
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