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System, network device, method, and computer program product for active load balancing using clustered nodes as authoritative domain name servers

  • US 20060235972A1
  • Filed: 06/29/2005
  • Published: 10/19/2006
  • Est. Priority Date: 04/13/2005
  • Status: Active Grant
First Claim
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1. A system for performing active load balancing using at least one network device of a cluster of network devices as an authoritative domain name server, wherein the system comprises:

  • a plurality of network devices grouped in a cluster, wherein each network device has a different respective device internet protocol (IP) address;

    wherein one of the network devices is designated as a master device;

    wherein the master device is assigned an IP address as the authoritative domain name server;

    wherein each network device is capable of communicating status information to at least the master device in the cluster;

    wherein the master device is capable of receiving a domain name service (DNS) query based upon a client request, selecting one of the network devices to communicate with the client based on the status information of each of the network devices, and returning a device IP address of the selected one of the network devices in response to the DNS query.

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