DNS Round Robin Facts
Round robin is a local balancing mechanism used by DNS servers to share and distribute network resource loads. To configure DNS round robin, do the following:
- On the DNS server, edit the server properties and enable the Enable round robin option on the Advanced tab (this setting is enabled by default).
- Configure two (or more) servers, each with a different IP address.
- On the DNS server, create A records that map the same DNS name to each of the different server IP addresses. This allows the DNS server to respond to clients by sending them to any one of the machines while leaving the appearance that a single machine is responding to all clients.
Note: Round robin is a static method for load balancing. If one of the servers in the round robin configuration fails, DNS still sends requests to that failed server.