[Samba] Multihomed AD DC Server and subnets

Federico Sayd fsayd at uncu.edu.ar
Mon Nov 3 15:56:58 MST 2014

El Lunes, 3 de Noviembre de 2014 16.33 CLST, Allen Chen <achen at harbourfrontcentre.com> Ha escrito:
 On 11/3/2014 8:18 AM, Federico Alberto Sayd wrote:
> Hello:
> I am currently planning to divide our network in smaller subnets. Our
> central server is a Samba AD DC File Server also acting as DC.
> My plan is subnet our current network, add a new interface for each
> subnet in the Samba File Server and configure it to listen in all new
> interfaces.
> Questions:
> 1 - Does this multihomed configuration have any drawback, specifically
> because AD relies so much on DNS to work, and hosts in each subnet
> need resolve to the right ip of the multihomed server?
To make your life easier, it's better to use a separate router to handle
your new subnets.
So you don't need to change anything on your AD DC.
BTW, you have to have a router to do the routing.

I have a router, and the router will route the connections bewtween hosts in differents subnets, but I want avoid latency introduced by routing when clients try to reach files in the File Server. I can attach a interface for every subnet in the File Server and I want use this interfaces for direct access. I don't know if it is possible (May be pushing a route into the hosts using a GPO...?)

> 2 - Do I need to configure new sites for each subnet from "Active
> Directory Sites and Services" and install a new DC in each subnet?

What is the use of "subnets" in "Active Directory Sites and Services". AFIK Samba supports sites, and Microsoft's docs [1] tell about sites with routed subnets and so on. Why "N/A"?

> 3 - Can you suggest a way to avoid that pcs placed in a different
> subnet other than the File Server can reach the File Server without
> routing (The File Server will have a interface in each subnet)?. I
> assume that pcs reach the File Server by name and a name only resolve
> to a unique ip.
You have to do routing between subnets either via a router or your AD DC.
I don't think it's a good idea using the AD DC as a router.
Does routing affect the file sharing?
> Can you drive me in some direction or point me if this approach is the
> right choice?
> Thanks
> PD: Sorry for my poor English

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[1] http://technet.microsoft.com/en-us/library/cc754697.aspx

PD: Sorry, I fixed the subject, although Samba is a music style, it don't have nothing to do with hard rock :-)


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