Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Active Directory failover not working as intended

Posted on 2006-10-25
3
Medium Priority
?
283 Views
Last Modified: 2006-11-18
Hello,

We have a relatively small domain - 7 servers total with about 200 users...  All of our servers are running MS Windows Server 2003...  for lack of a better term our PDC (which I know doesn't exist anymore) is called MSDSB04.  It handles DNS as well as Active Directory and DHCP on the local LAN segment.

I have added two other Active Directory servers over the last year or so - the intent being that if something happened to MSDSB04 they would handle DNS and authentication requests seamlessly without any interruption of service to the LAN users... this has not worked...  When MSDSB04 goes offline - it kills the LAN.

What do I need to do to get these other servers to pick up the slack on demand?
0
Comment
Question by:iain_stephen
[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
3 Comments
 
LVL 71

Accepted Solution

by:
Chris Dent earned 750 total points
ID: 17803466

Hey,

You need a few things.

You mentioned it, but didn't say whether or not the other servers were running the DNS Service? And if so, are they mentioned in your clients TCP/IP config?

One of the other most important things is that you set your servers to be Global Catalog, this is done through AD Sites and Services, then under your Site, Servers, your Server and the properties for NTDS Settings you should see a little tick box. There are no problems with you making all your Domain Controllers Global Catalog.

Chris
0
 

Author Comment

by:iain_stephen
ID: 17804013
Just a note - thank you for keeping it simple and not referring me to endless Microsoft KB articles... the key was the global catalog - it was only checked for the 'PDC' - not the other two servers...

I have done that now and will try it out tonight...

One other question - if you have the time - The original 'PDC' is also running DHCP for the local LAN segment...  should I be setting up any kind of failover for that?  Perhaps it would be best to move the DHCP function to the main router (default gateway)?
0
 
LVL 71

Expert Comment

by:Chris Dent
ID: 17812547

Possibly the best way to deal with DHCP is to split the scope up into two, then have one DHCP Server hand out the first half and another the second.

Works pretty well really.

Chris
0

Featured Post

On Demand Webinar - Networking for the Cloud Era

This webinar discusses:
-Common barriers companies experience when moving to the cloud
-How SD-WAN changes the way we look at networks
-Best practices customers should employ moving forward with cloud migration
-What happens behind the scenes of SteelConnect’s one-click button

Question has a verified solution.

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

by Batuhan Cetin Within the dynamic life of an IT administrator, we hold many information in our minds like user names, passwords, IDs, phone numbers, incomes, service tags, bills and the order from our wives to buy milk when coming back to home.…
Learn about cloud computing and its benefits for small business owners.
This tutorial will teach you the special effect of super speed similar to the fictional character Wally West aka "The Flash" After Shake : http://www.videocopilot.net/presets/after_shake/ All lightning effects with instructions : http://www.mediaf…
We’ve all felt that sense of false security before—locking down external access to a database or component and feeling like we’ve done all we need to do to secure company data. But that feeling is fleeting. Attacks these days can happen in many w…

688 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