DNS FAILOVER SETTING

1. Under the “SM / FO” column next to the A record, click “off” to edit the configuration.

1. Enable System Monitoring and DNS Failover by checking the boxes.
2. Provide a System Description – this will be included in the notification you receive so you know which system the notification is for.
3. Select your contact list to be notified of system changes – We select the one we created. The default notification is to the account owner which is the email address on file for the account.
4. Select a maximum number of emails you would like to receive regarding the name failover event.
5. Select a Sensitivity Level – The “sensitivity” option in DNS Failover allows users to specify how quickly DNS Failover services change the IP of the monitored system. High Sensitivity means less checks against the system, only three checks are performed to confirm if your system is reachable. Medium Sensitivity ( which is the default) makes six immediate checks to confirm if your system is reachable. Low Sensitivity makes nine instantaneous checks to confirm if your system is reachable.
6. Enter the fully qualified domain name of the system you are monitoring. This is the full host name of the monitored system.
7. Now configure a port and protocol to monitor based on what criteria you want to confirm is reachable on your system. Here we are configuring the primary IP address of 1.2.3.4 to be monitored on HTTP port 80 and failover to the IP address 1.2.3.5 if the primary is not available.
8. We have also added a file and string to query for in the HTTP configuration, these fields are optional. The system will query http://1.2.3.4:80/index.html and look for the string of UP in the first 1KB of text on that page. All this criteria must be met for the IP to be considered online. In addition, the web server must reply with a 200 ok response code.
9. We have also enabled the “Turn off auto-failover after first failure” feature with a check mark. This means that DNS Failover will not revert traffic back to the primary IP address automatically. The current IP will remain 1.2.3.5 until it is manually edited it back to 1.2.3.4.
10. Click “Ok”

For your information, below is the list of networks our monitoring services will check your primary IP address from: