DNS Failover Project

DNS Failover Project

Scope: One internet circuit fails dns records failover to back up circuit.

Technology IP anycast

Company DNS Made Easy

Summary;

Moved name servers for Contoso to DNS Made Easy. Configured DNS entries for failover between to IP Addresses.

Screenshot of DNS Failover Configuration. (Note company info has been changed.)

Test:

When Location 1 fails the following email is sent:

Notification: System is DOWN
IP: 8.8.8.8
System Desc: Test
Port: 80
Protocol: HTTP
2013-12-28 04:39:15.177 UTC
Previously failed: 7 times.
ID: 12124184

When the Location is has been restored the following email is sent:

Notification: System is UP
IP: 8.8.8.8
System Desc: Test
Port: 80
Protocol: HTTP
2013-12-28 04:39:15.177 UTC
Previously failed: 7 times.
ID: 12124184

Conclusion:
This Solution seems to be working fine for us, only issue we have seen is when the internet circuit flaps. To mitigate this we log into Easy DNS and disable the failover and disable the circuit on the firewall.

This scenario has only effected our production environment once since go live.