In networks of interconnected router nodes for routing data traffic, a method of and system for imperceptibly upgrading router node software and the like without traffic interruption

摘要

In networks of interconnected router nodes for forwarding data traffic along a predetermined path of the network, a method of and system for imperceptibly upgrading router node software and the like without traffic interruption through a novel preparation of upgraded software in a router while that router continues to forward data under the control of its original software, and then swapping the upgraded software for the original software without disruption.