Patent · US Active

DNS server arrangement and method

US9525749B2 · kind B2 · utility

4Cited by

0References

13Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Jari Arkko · Kauniainen, FI
Fredrik Garneij · Göteborg, SE
Christian Gotare · Getinge, SE
Tero Kauppinen · Espoo, FI
Heikki Mahkonen · San Jose, US
Jan Melén · Espoo, FI
Martti Kuparinen · Espoo, FI

Key dates

Filing date	Nov 17, 2010
Grant date	Dec 20, 2016
Priority date	—
Expiry date	Dec 26, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH04L61/58
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

The present invention relates to a Domain Name System (DNS) server and a method for resolving DNS queries from a number of clients. The DNS server comprises multiple virtual DNS server instances servicing different clients. The DNS server further comprises a shared cache for caching records which indicate answers to resolved DNS queries. The shared cache is shared between a set of virtual DNS server instances. The virtual DNS server instances that share the shared cache are able to cache DNS query results in the shared cache as well as resolve a DNS query by retrieving a cached record corresponding to the DNS query from the shared cache. Thus it is possible for a virtual DNS server instance to make use of DNS query results obtained by other virtual DNS server instances.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.