The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 16, 2008
Filed:
Sep. 20, 2002
Gaurav Banga, Sunnyvale, CA (US);
James Stewart, Palo Alto, CA (US);
Gaurav Banga, Sunnyvale, CA (US);
James Stewart, Palo Alto, CA (US);
Network Appliance, Inc., Sunnyvale, CA (US);
Abstract
The present invention relates to an enhanced DNS resolver architecture configured to operate in high availability environments, such as the Internet. Specifically, the DNS resolver code of the present invention may be implemented by a storage operating system in a filer. The resolver code modifies a conventional resolver algorithm so as to reduce the time necessary to map IP addresses to alphanumeric domain names and vice versa. Advantageously, the enhanced resolver code keeps track of non-responsive or 'dead' DNS servers as well as non-resolvable or 'bad' domain names and IP addresses.