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chico

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Hi Their

Glad to be back.

Would like some feedback on this topic.

I work for a small company that is running a domain (local) for the users in the company. Lately I have been asked to preform IT task since they found out I have an IT background.

The new server is running Windows server 2016 Standard. Lately some of the users have been having problems connecting (not getting the proper domain ip address) the network and gaining internet access. So I got snooping around to see how this server was set up by IT company they been using for a while now. I went to the server manager dashboard, then clicked on the tools and too my surprise I found out that they didn't install the DCHP server portion.

From the courses I have taken and my days working with Windows 2008 when you set up a domain you needed to set up the DHCP so that ip address could be provided to the users.

So my question is has this procedure been changed with Windows Server 2016, or do you still need to setup the DCHP server portion when running a domain.

I haven't figured out what is assigning the ip address to the users on the network. But will look further into this in the next couple of days.

Any feedback would be great as I need to figure out if this new server has been set up wrong.
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donoli

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I haven't figured out what is assigning the ip address to the users on the network.


It's probably the router. I was in the same position as you with a small company. There were only 16 workstations so I used static IP addresses. If you have people coming & going w/ laptops, you'll need both.
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dennis-360ict

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Run
Cmd
ipconfig /all

And look for the DHCP server ip, track down that ip to see what device that is to see whats giving the ip adresses.

Small shops tend to let the one server do everything, but there’s no bad or good, just options. And if you make a choice, set it up correctly.

And to answer your question: ws16 doesnt automagically setup dhcp without adding the dhcp role/feature.

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chico

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Thanks for your input.

After checking into this issue further this is what I have found.

The old server (static ip address of 192.168.2.25) that we have, is still setup and acting as the DHCP server, with a ip address range of 192.168.2.1 to 192.168.2.254. The new server doesn't have the DHCP sever installed as of yet.

The new Rogers modem/router we have is also acting as a DHCP server with an ip address range of 192.168.2.10 to 192.168.2.200. This modem was installed around the same time as when the new sever was put online.

With the 2x devices acting as the DHCP server I believe that this could be the problem why the users are not getting proper ip address when they log onto the network, and get a message saying (NOT CONNECTED TO A NETWORK).

Thoughts on 2x DHCP servers running??
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donoli

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Thoughts on 2x DHCP servers running??


I agree that 2 DHCP servers, especially in the same IP range is a problem even if it's not the only problem. Did you also get any IP conflict errors? I would let the router take care of DHCP.
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ml_work

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I agree, you do not need 2 DHCP servers and as others have said the router maybe the best for a small network. I would set the router to hand out from 100-150 with 8 hour lease and set the DNS it hands out to the DNS of the ISP. Give  the users Static IP in the range of 50-99  and the DNS set to the IP of the server if this is domain.
I like keeping the visitors DNS away from the domain.

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chico

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Quote:
Originally Posted by donoli


I agree that 2 DHCP servers, especially in the same IP range is a problem even if it's not the only problem. Did you also get any IP conflict errors? I would let the router take care of DHCP.


What I was finding when I did "ipconfig /all" it would show a ip address of 192.164.22.254 (preferred) then down below it it would show 192.168.2.29(conflict).
This when I started seeing this it told me that the DHCP wasn't doing its job.
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chico

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Quote:
Originally Posted by ml_work
I agree, you do not need 2 DHCP servers and as others have said the router maybe the best for a small network. I would set the router to hand out from 100-150 with 8 hour lease and set the DNS it hands out to the DNS of the ISP. Give  the users Static IP in the range of 50-99  and the DNS set to the IP of the server if this is domain.
I like keeping the visitors DNS away from the domain.


Thanks for the feedback. It confirms that running two systems as a DHCP is causing a conflicts.

I understand that using the router and/or the server for DHCP that their is no wrong way here. Both will do the job.

It's my belief that if you spend good money for a server let the server do everything. I will let management make that decision.

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donoli

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It's my belief that if you spend good money for a server let the server do everything.


They paid good money for the router too. If the server handles DHCP & it crashes, no one has internet. If the router does DHCP. everyone still has internet even if there is a problem with the server.
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chico

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Quote:
Originally Posted by donoli


They paid good money for the router too. If the server handles DHCP & it crashes, no one has internet. If the router does DHCP. everyone still has internet even if there is a problem with the server.


Point taken, thanks fore the feedback.
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chico

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After talking to management, they have agreed that this would be best practice use since we will be going to an ERP software on a cloud system. This way if the server does go down we still have internet access.

I have gone in and revised the ip address range on the router and the router “DNS Obtain” is enabled but it doesn't tell you what the ip address is.

The old server that is also acting as the DHCP with the following setup.

  old server.png    

 I now after I shut it down the old server and let the router to act as the DHCP. I rebooted my PC I could log back in the router did provide an ip address to my PC. However, I was unable to gain any internet access. It says that I have internet access but nothing. Was not able to get back into the modem/router interface either.

So, I restarted the old server, rebooted my PC got back my original ip address was able get on the internet and the modem/router interface.

Something is not right here by shutting down the old server and letting the modem/router act as the DHCP. I should have been able to get on the internet.

Here are the New server info and something doesn't look right. Look at the DNS Server ip address. Whats with this ::1
new server.png    Any suggestion what might the issue be here.


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donoli

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Reply with quote  #12 
You are using the loop back as the DNS (127.0.0.10. Change it to 192.168.2.1 or use the google DNS, 8.8.8.8 or both
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chico

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Quote:
Originally Posted by donoli
You are using the loop back as the DNS (127.0.0.10. Change it to 192.168.2.1 or use the google DNS, 8.8.8.8 or both


I thought this was wrong, and you have confirmed it. Thank god I haven't lost my memory yet and for Mark Minasi's server books. Thanks for your feedback.

BTW, this was set up by the IT company they use on a regular basis.

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donoli

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The time is getting close for them to create a position for you with a raise, if they haven't done that already.
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chico

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Quote:
Originally Posted by donoli
The time is getting close for them to create a position for you with a raise, if they haven't done that already.


Wishfully thinking, I'm not even full time yet. Funny thing they are expecting to help implement an ERP system later this year.

Time will only tell I guess.

Thanks again for everyone's help.
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