Re: SBS2003 and backup domain controller
- From: "Charlie Russel - MVP" <charlie@xxxxxxxxxxxxxxxxxxxxxxx>
- Date: Sun, 29 Oct 2006 15:28:34 -0800
It's true that your existing clients will retain their lease. But you don't want them to - they won't be able to see the gateway, since the SBS server is down. You want them to switch default gateways to point out through the secondary server.
Another point - I'd make the leases on the secondary server quite short. That way, once your main SBS box is ready to come online, you simple stop the DHCP Server service on the secondary, bring up the main SBS box, and fairly quickly clients will have to get a new address...
--
Charlie.
http://msmvps.com/xperts64
"NetTransplant" <flbritton@xxxxxxx> wrote in message news:bcR0h.212407$R63.163436@xxxxxxxxxxxx
Thanks. Existing clients will retain IP address until next lease timeout at least and then the second dhcp scope will be online.
I did not know of sbs2003's dhcp restriction. thanks.
"Charlie Russel - MVP" <charlie@xxxxxxxxxxxxxxxxxxxxxxx> wrote in message news:C349B22F-8A57-4CF2-B5E5-EB44987B64E6@xxxxxxxxxxxxxxxxI would set the second one to be DNS (integrated AD), and set up a DHCP scope that mirrors what is set up in your SBS server. Then exclude different ranges from each. (So, for example, SBS has DHCP from 10-200, with 101-200 excluded. Server 2k3 has DHCP from 10-200, with 10-100 excluded.) Set the default gateway on this box to point through itself, obviously. And the DNS order should be reversed.
Do NOT authorize the secondary DHCP server (SBS doesn't want to see any other DHCP servers on the network. ) If the SBS box is down, you go in to the secondary and authorize and start the DHCP server and you're in business. Existing clients will need to repair their connection or reboot.
--
Charlie.
http://msmvps.com/xperts64
"NetTransplant" <flbritton@xxxxxxx> wrote in message news:ghN0h.205317$5R2.34934@xxxxxxxxxxxxI have a client, a not-for-profit, that has a two NIC SBS2003 SP1. Domain runs fine. They also own a Dell Poweredge and a Windows 2003 server license. I am thinking about using this as a second domain controller and not much else. It has only 512 mg and dual 36 g hard drives so not a lot of resource here.
I'm stuck on the configuration to best survive a SBS2003 server failure. If this office was configured with a single NIC SBS2003 life would be easier.
If I dual NIC the DELL and place it's external on a public IP address, which they do have two of, then set DHCP and DNS up on the DELL, if the SBS2003 failed the users would have full log on access and Internet through the DELL.
I would have to adjust the DHCP leases to point to both servers as DNS and gateway.
Is anyone doing this?
.
- References:
- SBS2003 and backup domain controller
- From: NetTransplant
- Re: SBS2003 and backup domain controller
- From: Charlie Russel - MVP
- Re: SBS2003 and backup domain controller
- From: NetTransplant
- SBS2003 and backup domain controller
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