?
Solved

What is the best way to set up a redundant DHCP server on a second DC in a domain?

Posted on 2006-10-25
4
Medium Priority
?
813 Views
Last Modified: 2013-12-23
I use W2K server and just setup a secondary DC.  I believe I can simply add DNS to it for redundancy but I would also like to add a redundant DHCP server.  My current DHCP server issues IP address to 10.1.1.100 through 10.1.1.254 subnet 255.255.255.0 with reservations 1-100

I am looking for the easiest possible way to do this.  Thanks
0
Comment
Question by:chitchcock
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 31

Accepted Solution

by:
Gareth Gudger earned 2000 total points
ID: 17804727
Microsoft typically recommends a 80 / 20 lease split in your scope. Personally I have never quite understood there mentality behind this as this could still mean incomplete redundancy in my book.

The question I have to ask...how many hosts are using up those 154 IP addresses? If you only have say 50 hosts then I would configure one server with a lease range of 10.1.1.100 - 10.1.1.175 and the other as 10.1.1.176 - 10.1.1.254.

You don't want the scopes to overlap from each server or you might be handing out duplicate IPs. Ultimately you are creating the same exact scope on each server, with the same scope options (DNS server IP address etc) but you are going to reserve the block 10.1.1.100 - 10.1.1.175 on one and 10.1.1.176 - 10.1.1.254 on the other.
0
 

Author Comment

by:chitchcock
ID: 17804980
I have about 110 users accessing this segment.  So all I would need to do is enable DHCP on server 2, create a scope different then scope on server 1.  Or do I just set exlusion ranges on each that won't interfere with each other?  DHCP discovery by clients will just get the first handed to them but both will update DDNS automagically?
0
 
LVL 31

Expert Comment

by:Gareth Gudger
ID: 17808352
Yep. Create the same scope and set exclusions on each. In your case I guess the 80 / 20 IP scheme would work :D

You may also want to consider expanding your 10.x subnet so you can have total redundancy.
0
 

Author Comment

by:chitchcock
ID: 17808469
thanks
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Many of us in IT utilize a combination of roaming profiles and folder redirection to ensure user information carries over from one workstation to another; in my environment, it was to enable virtualization without needing a separate desktop for each…
An article on effective troubleshooting
This course is ideal for IT System Administrators working with VMware vSphere and its associated products in their company infrastructure. This course teaches you how to install and maintain this virtualization technology to store data, prevent vuln…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…

649 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question