Navigate to https://centscdn-1b118.web.app/103

Click the manage button of your domain name

Here you can provide the name for your A record

Specify the corresponding TTL value. Time to live (TTL) dictates how long your records stay cached. For example, for how long will your A record is cached before retrieving a new copy of the record from DNS servers

Geo Proximity: Geo Proximity rules allow system administrators to specify the location or the longitude & latitude of their hosted servers (data center locations). Once configured, the traffic director will automatically calculate which server is closest to the end-querying client in real-time. Geo Proximity can also be used with Failover and is highly customizable and scalable.  You can enable it and configure the settings if required

IP Filter: IP Filters are rules you can apply to your records that if a user meets the requirement(s) of the filter, they will be answered with that record. Otherwise, they will be answered with the World/Default. Filters can be created for: regions, countries, cities, ASN (Autonomous System Network) of the resolving name server, /24 IPv4 EDNS client subnet, and /120 IPv6 EDNS client subnet. *IP Filter cannot be enabled for the default rule. It should be disabled for the default rule. It is considered worldwide access if it is disabled. You can create another rule in the same record to configure IP Filter.*

Rule Mode: choose the appropriate rule mode.

Standard – In standard rule mode, you can point your domain to an IP address. This method does not allow failure switching between servers.

Round Robin with Failover-  When using the Standard and Failover methods, the response will be received by a specific IP address at a time. Round Robin with failover mode acts as a load balancer and provides random responses from active IP addresses.

Failover–  This rule method allows you to add multiple servers’ IP addresses. The traffic director will check the status of your server periodically using Health Check and switch to another server if the primary goes offline based on the failover mode. The failover modes are Normal, Off, Oneway

Normal – Failover will attempt to use the lowest IP address in the queue. This means if the lowest IP becomes available again then it will switch to the lowest IP address.

Off- Failover will turn off after the first and only event has occurred. If the primary IP becomes available again, it won’t switch back. You have to resave the settings again to use the primary IP.

One Way- Failover will only move further down the queue to the higher IP address. If the lower one becomes available. It won’t use it. You have to resave the settings again to use the primary IP.

Here you can add the IPv4 address of your A record

Click on "Add IPv4" to add more IP addresses, We can add multiple IP addresses to the A record using traffic director. In this case, the system will check other servers and switch to the one that is available in the event of the primary server going down.

Here I have added 3 IP addresses for the A record.

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The A Record points your hostname to an IP address. This is one of the most frequently used records in the DNS Zones and it is an essential part of your DNS configuration. Record A specifies the IP address (IPv4) for a given host. In other words, it resolves a domain name (or points the domain name) to the correct location by means of the IP address.The A record usually points to IPV4 addresses. We can add multiple IP addresses to the A record using traffic director.

How to create DNS A record in Traffic Director domain?