09130954 is referenced by 1 patents and cites 290 patents.

A global server load-balancing (GSLB) switch serves as a proxy to an authoritative DNS and communicates with numerous site switches that are coupled to host servers serving specific applications. The GSLB switch receives from site switches operational information regarding host servers within the site switches neighborhood. This operational information includes health check information that is remotely obtained in a distributed manner from remote metric agents at the site switches. When a client program requests a resolution of a host name, the GSLB switch, acting as a proxy of an authoritative DNS, returns one or more ordered IP addresses for the host name. The IP addresses are ordered using metrics, including the health check metric that evaluates these IP addresses based on the health check information communicated to the GSLB switch in a distributed manner by the distributed health check site switches. In one instance, the GSLB switch places the address that is deemed “best” at the top of the list.

Title
Distributed health check for global server load balancing
Application Number
10/305823
Publication Number
9130954 (B2)
Application Date
November 27, 2002
Publication Date
September 8, 2015
Inventor
David Chun Ying Cheung
San Jose
CA, US
Prajakta S Joshi
Santa Clara
CA, US
Agent
Novak Druce Connolly Bove Quigg
Assignee
BROCADE COMMUNICATIONS SYSTEMS
CA, US
IPC
H04L 29/08
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