Patent ID: 8745240
Filing Date: 2014-06-03
Classification: H04L

Abstract:
1. A global load balancing system for use in a content delivery network having a plurality of edge servers distributed across multiple geographical locations, comprising a first load balancing server located at a first geographical location for balancing a load across a first plurality of edge servers, the first load balancing server being associated with a first router that advertises a first set of IP addresses for the first load balancing server, and a second load balancing server located at a second geographical location for balancing a load across a second plurality of edge servers, the second load balancing server being associated with a second router that advertises a second set of IP addresses for the second load balancing server, wherein the first router advertises a first IP address identical to one advertised by the second router, such that a first content request addressed to the first IP address from a first user located closer to the first geographic location is received and processed by the first load balancing server, whereas a second content request addressed to the first IP address from a second user located closer to the second geographic location is received and processed by the second load balancing server, and wherein the first router regulates relative traffic load at the first geographical location and the second geographical location by: removing the second IP address from the first set of IP addresses such that the first router no longer advertises the second IP address.