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You would use failover at your firewall to support multiple internet connections. &nbsp;SonicWALLs do a very good job at this and are easy to configure. &nbsp;If your firewall does not support failover you can use a regular load balancer. &nbsp;I've used this one in the past and it will even fail over DNS records so inbound connections aren't broken.<br />
<br />
<a href="http://www.ecessa.com/products/single-site/powerlink" rel="ugc">http://www.ecessa.com/products/single-site/powerlink</a><br />
<br />
Make sure you point the primary DNS of the clients to the DNS server (ADC/RODC) located at that site.
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You would use failover at your firewall to support multiple internet connections.  SonicWALLs do a very good job at this and are easy to configure.  If your firewall does not support failover you can use a regular load balancer.  I've used this one in the past and it will even fail over DNS records so inbound connections aren't broken.

http://www.ecessa.com/products/single-site/powerlink [http://www.ecessa.com/products/single-site/powerlink]

Make sure you point the primary DNS of the clients to the DNS server (ADC/RODC) located at that site.

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my firewall handle this type of connection, the problem that I have is how I configure my clients and DNS servers when communication with my backup link is cut,
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my firewall handle this type of connection, the problem that I have is how I configure my clients and DNS servers when communication with my backup link is cut,

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<div class="content wysiwyg-content">
Good afternoon I need to support the following: <br />
I have 2 sites, each site has installed a RODC and Internet Backup<br />
<br />
1) how I should configure the servers so that when the link is cut (1 or ShutDown ShutDown) can still have control of my active directory and users can connect to the network for 802.1x <br />
2) how I should configure DNS so you can surf the internet for backup <br />
<br />
waiting for your comments <br />
<br />
best regards<br />
<a href="https://filedb.experts-exchange.com/incoming/2014/09_w36/870039/AltaDisponibilidad-Comunicaciones.png" target="_blank" class="file-inline" title="AltaDisponibilidad-Comunicaciones.png (102 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>AltaDisponibilidad-Comunicaciones.png</a>
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AltaDisponibilidad-Comunicaciones.png

Good afternoon I need to support the following: 
I have 2 sites, each site has installed a RODC and Internet Backup

1) how I should configure the servers so that when the link is cut (1 or ShutDown ShutDown) can still have control of my active directory and users can connect to the network for 802.1x 
2) how I should configure DNS so you can surf the internet for backup 

waiting for your comments 

best regards

High Availability in Active Directory and Internet.

The Windows operating systems have distinct methodologies for designing and implementing networks, and have specific systems to accomplish various networking processes, such as Exchange for email, Sharepoint for shared files and programs, and IIS for delivery of web pages. Microsoft also produces server technologies for networked database use, security and virtualization.