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DNS remote location

Posted on 2016-11-06
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Last Modified: 2016-11-26
Good day,

I have a situation at a client where I don't seem to be able to figure out. I have two locations connected via Fiber.

All the workstations at both locations are joined to the domain which is at the main location. At the remote location I have about 6 workstations and an SQL express server running on a windows 7 machine.

All works well as long as the fiber is up, the moment the fiber goes down everything's stops working. Th consultant of the database tells me the issue is DNS related so I configured all workstations to use static IP but nothing, no he tells me to install a DHCP and DNS server at the remote location, and that's where I run into a knowledge issue.

Can install two DNS and DHCP servers in the same network using the same subnet. If so how would I do that.
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Question by:rudym88
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by:No More
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Could you give more information about your infrastructure Windows server version ?
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by:rudym88
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Sorry, running on windows server 2012
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by:No More
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OK , Could give me more details like are your sites connected by VPN Router,Firewall,Switches in each location >? Can you make a detail picture of your infrastructure ?
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Mal Osborne earned 250 total points (awarded by participants)
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Typically, a remote site would use a different IP range, and the connection between the two sites would be via a VPN.

Either way, yes, it is possible to have a second DNS server at the remote site. Usually, in the Windows world, this would be a second DC. Not difficult, but of course requires a server and second license. Need not be anything special, and old workstation could suffice.

WRT to DHCP, a second server is possible, but probably not a requirement. Machines typically have an 8 day lease, so unless the connection is down for a considerable amount of time, a DHCP server is not an absolute requirement. If a Windows machine boots with time left on a DHCP lease, and is unable to contact a DHCP server, it will attempt to ping the default gateway. If a response is received, it will continue to use that lease. Thus, if the default gateway is pingable, client will be OK for at least 4 days.
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by:masnrock
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Before I delve into your main question you've asked, my big concern is that its appears your point to point connection goes down quite a bit. While there's no such thing as a connection with 100 percent uptime, it sounds like you really need to get the ISP to take a look at that. What company is it?

Can install two DNS and DHCP servers in the same network using the same subnet.
The short answer to your question is yes. Simplest thing would be to have a domain controller at the As Malmensa mentioned, you don't need a top end server to accomplish this.

The upside to the remote site having its own subnet is that anything that troubleshooting can become easier because you can isolate things in a quicker fashion. Plus if you ever needed to have a backup connection at the remote site, it should be fewer headaches.
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