Patent ID: 9678841
Date: 2017-06-13
CPC Classifications: G06F,H04L

Claim:
1. A method of operating a control node in a content delivery network, the method comprising: receiving content requests issued by end user devices for content cached by a plurality of content nodes of the content delivery network; for at least a first content request, mapping a first connection between a first end user device and a first content node, the first connection defined by at least a network address of the first end user device and a virtual next hop network address; directing traffic associated with the first connection to the first content node using at least the virtual next hop network address and a first version of a second address, wherein the first version of the second address indicates the first content node is an original content node for the first content request; identifying a service interruption associated with the first content node; and responsive to the service interruption, identifying a second content node to handle the first connection and directing the traffic associated with the first connection to the second content node using at least the virtual next hop network address and a modified version of the second address, wherein the modified version of the second address indicates the second content node replaces the first content node in servicing the first connection.