Single Active Directory Network with Multiple Gateways

I have a simple problem which I hope would be an easy solution.

I have a single AD network and two Routers to the internet - one on 172.168.0.1 and 172.168.0.2. They are both separate netgear devices. I am running Server 2008 R2

I have setup DHCP to issue two gateways so that if one fails the other one will take over serving the internet to clients. If I manually change the gateway on the clients it works fine but when I power fail the primary router the secondary router doesn't take over unless you change the settings manually.

One thing I am wondering is maybe they don't allow failover in this instance like DNS but any advice would be much appreciated.

Thank you
LVL 1
cmlbaeteAsked:
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.

Neil RussellTechnical Development LeadCommented:
This does not work and never has. In Windows 8.1 they have removed it. Even with default gateway detection, if the DFG is still alive and pingable but the ISP is down, you would be stuffed.

Only use I have seen for it is when moving a laptop around a site with multiple networks on it each with there own seperate DFG.
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
QlemoBatchelor, Developer and EE Topic AdvisorCommented:
I can only second that. The rule of thumb is to never have more than one default gateway for all active network connections alltogether.
That is, you can have
  one on WiFi, which is off while on LAN,
  and one on LAN, which is off while on WiFi.
That makes sense, but almost everything else does not. Even a router failure will not allow for switching the default gateway. You need to script the gateway change in DHCP, and enforce a DHCP refresh on all clients, when failing over. Or you use e.g. psexec to perform the change directly on each PC, but executed at a single machine.
0
JustInCaseCommented:
I don't know are your routers capable for Virtual Router Redundancy Protocol (VRRP), if they are capable, then this could be your solution. You assign virtual IP address to routers and tracking status availability of links to internet, so in case of failure of one route other router forward traffic. That virtual IP address you assign to PCs, then you don't need to change default gateway on PCs, depending on states of links routers switch which one is forward traffic.
0
Making Bulk Changes to Active Directory

Watch this video to see how easy it is to make mass changes to Active Directory from an external text file without using complicated scripts.

cmlbaeteAuthor Commented:
I have two different routers - one is a Draytek 2820 and the other is a Netgear FVS318G.

I am not sure if either of them do but will have a look.
0
Neil RussellTechnical Development LeadCommented:
Those are not going to help you. No VRRP
0
cmlbaeteAuthor Commented:
This was a very helpful post and I have since abandoned it but thank you all for your comments
0
cmlbaeteAuthor Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for cmlbaete's comment #a40754497

for the following reason:

This was not a resolution but did provide the answers that were needed for me.
0
Neil RussellTechnical Development LeadCommented:
The post very accurately answered the question.
0
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
Exchange

From novice to tech pro — start learning today.