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:
Mar. 16, 2010
Filed:
Oct. 24, 2006
Bernard Volz, Center Harbor, NH (US);
Sri Hary Vengadasubbu, Arlington, MA (US);
Jeffrey Cioli, Derry, NH (US);
Bernard Volz, Center Harbor, NH (US);
Sri Hary Vengadasubbu, Arlington, MA (US);
Jeffrey Cioli, Derry, NH (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A technique is performed within a DNS server to respond to a DNS message. The technique includes receiving the DNS message from a requesting device (e.g., a DHCP server), and generating a search result based on a search of a portion of the DNS message for a request to delete a specific record (i.e., a specific, predefined record which is not expected to exist in the DNS). The technique further includes selectively providing and not providing current state information (or other information) to the requesting device depending on whether the search result indicates that the request to delete the specific record resides within the portion of the DNS message. Such operation allows for augmented operation with augmented DNS clients, as well as non-augmented operation with legacy equipment.