Patent ID: 8326980
Filing Date: 2012-12-04
Classification: H04L

Abstract:
1. A method comprising: receiving, at a first domain name system (DNS) server of a first data center, a first DNS query from a local DNS resolver, the first DNS query requesting a network address corresponding to a query domain name; responding to the first DNS query, from the first DNS server, by reflecting the local DNS resolver to one or more reflector DNS servers of a second data center, both the first data center and the second data center corresponding to the query domain name, the responding to the first DNS query from the first DNS server including generating a response that is returned to the local DNS resolver by the first DNS server, the response including both an additional network address of one of the one or more reflector DNS servers, and the network address corresponding to the query domain name to be included in responding to the final DNS query; receiving, at the one or more reflector DNS servers, one or more additional DNS queries; responding to a final DNS query, from a collector DNS server, with the network address corresponding to the query domain name; and determining, based on communications between the local DNS resolver and the one or more reflector DNS servers and the collector DNS server of the second data center, one or more network performance measurements for communications between the local DNS resolver and the second data center.