How to decrease inter-domain replication delay under 1 minute?

We need replication to occur in under 5 seconds between two domains in the
same forest. Both domains are on the same fast LAN and the DCs are
underutilized. The inter-site transport options in the Sites and Services
snapin has a minimum configuration of 1 minute. Is there another way to
reduce inter-site replication to ~5 seconds?
Thanks,
Jim

You can enable change notifications across sites, which basically does what
you want. Enabling change notifications to cross site boundaries treats the
DCs in the sites in question as local.
-- http://www.msresource.net/content/view/32/47/


However as both systems are on the same LAN, perhaps they should also be in
the same site? This way they would replicate every 15 seconds by default.

--
Paul Williams
Microsoft MVP - Windows Server - Directory Services
http://www.msresource.net | http://forums.msresource.net

thanks Paul. I don't remember why we built them in separate sites -
probably default. What are the potential disadvantages of having both
domains in the same site other that less control over replication?
Jim


"Paul Williams [MVP]" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> You can enable change notifications across sites, which basically does
> what
> you want. Enabling change notifications to cross site boundaries treats
> the
> DCs in the sites in question as local.
> -- http://www.msresource.net/content/view/32/47/
>
>
> However as both systems are on the same LAN, perhaps they should also be
> in
> the same site? This way they would replicate every 15 seconds by default.
>
> --
> Paul Williams
> Microsoft MVP - Windows Server - Directory Services
> http://www.msresource.net | http://forums.msresource.net
>
>

If the DCs are on the same fast network they should be in the same site unless
you are using it to segregate use of the DCs. In that case, as Paul indicated,
you can use change notification on the site link. Note that this doesn't mean it
acts as one big site and you will expand the single site replication ring, it
simply pushes change notifications across the site boundaries which means your
bridgeheads will be busier. If a bridgehead gets tied up pulling something from
another DC in another site, your site with change notification will have to wait
as well. Only one single inbound replication thread.



Jims wrote:
> We need replication to occur in under 5 seconds between two domains in the
> same forest. Both domains are on the same fast LAN and the DCs are
> underutilized. The inter-site transport options in the Sites and Services
> snapin has a minimum configuration of 1 minute. Is there another way to
> reduce inter-site replication to ~5 seconds?
> Thanks,
> Jim
>
>

None that spring to mind. Sites are domain-independent. They can contain
one or many domains. They are enterprise entities. Also, don't worry about
the fact that they can replicate a lot more frequently. They'll only
replicate enterprise partitions which will change less frequently than the
domain. And it's going to be better to pull lots of updates to the GC over
a fast line rather than a slow one.

--
Paul Williams
Microsoft MVP - Windows Server - Directory Services
http://www.msresource.net | http://forums.msresource.net