Redundant Network Policy Servers and how to implement them?

We currently have one Network Policy Server role installed on a domain controller, that is used to authenticate wireless clients onto our domain from a Cisco Aironet WAP.

How do we implement redundancy in case that NPS server goes down and can not authenticate? What are our options? I have read of load balancing NPS servers, but would prefer other options.

Do they have a hot standby option for the NPS role?
LVL 2
meade470Asked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

rauenpcCommented:
The way I've done it in the past was to run a schedule task to export the NPS configuration on the primary server, and on the secondary server I had a similar task scheduled to import the file that was created by the first. This way, every hour the two NPS servers essentially synchronized settings so you would only need to configure one server.
On networking equipment, you can specify multiple radius servers so that if one doesn't respond, it will try the other.
Below is a link explaining the commands for export/import.

http://technet.microsoft.com/en-us/library/cc732059%28v=ws.10%29.aspx
0
meade470Author Commented:
Thanks rauenpc - how often does the configuration change? is it needed to keep loading the configuration?
0
rauenpcCommented:
Only as often as you change it. If you only have, say, a couple policies and a handful of radius clients, then just configure the two NPS servers and configure your network devices with both radius servers and move on.
In the environments that I set this up, there were usually a few changes made per month when it comes to policies and adding clients, so to reduce mistakes and ensure consistency I setup the scheduled tasks.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
OS Security

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.