Electrical computers and digital processing systems: multicomput – Master/slave computer controlling
Reexamination Certificate
2008-02-22
2010-11-16
Patel, Haresh N (Department: 2454)
Electrical computers and digital processing systems: multicomput
Master/slave computer controlling
C709S245000, C709S246000, C370S230000
Reexamination Certificate
active
07836142
ABSTRACT:
A system and method for synchronizing a dynamic domain name system (DDNS). Updated domain name information is received at a first datastore and sent to a second datastore. Updated domain name information is also received at the second datastore and sent to the first datastore. Either datastore determines whether the other datastore is available to receive the updated domain name information. If the receiving datastore is not available, the sending datastore waits until the receiving datastore is available. The first datastore is connected to a first master DNS server and the second datastore is connected to a second master DNS server. The first and second master servers share an IP address. When a request for domain name information is received at a router, the request is sent to a master DNS server selected from the first and second master DNS servers using the shared IP address. A master DNS server is selected to respond to the DNS request only if that master server is able to respond to the request. The requested domain name information is retrieved from the datastore connected to the selected DNS server and a response to the request for domain name information is generated.
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Patel Haresh N
The Marbury Law Group PLLC
Time Warner Cable Inc.
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