Retry

Specifies the DNS requests' retry time. If the DNS request is not responded after timeout, the system will send the request again; if still not responded after the specified retry times (i.e., the repetition times of the DNS request), the system will send the request to the next DNS server.

Timeout

Specifies the DNS requests' timeout value. The system will wait for DNS server's response after sending the DNS request, and will send the request again if no response returns after a specified time. The period of waiting for response is known as timeout.