Patent attributes
In some particular embodiments, DNS servers are operated to maintain consistency of DNS records between the multiple master servers in response to certain types of communication situations. Each master DNS server monitors network connectivity by periodically testing or checking network connections of the master server (e.g., to another server). In one such exemplary context and particular embodiment, a first DNS master server operates by maintaining consistency of DNS records with at least one other DNS server. In this manner DNS records are updated using communications over a network and between the servers. Network isolation is detected and, after other related steps, restoration of connections to the at least one second DNS server is detected, and then queued DNS update requests are sent to the second DNS server. This approach is used to establish consistency of the DNS records between the DNS servers.
