Patent ID: 8804501
Filing Date: 2014-08-12
Classification: H04L

Abstract:
1. A method of routing packets across a packet switched network domain, the network domain comprising a plurality of nodes, wherein the plurality of nodes includes a source node, a destination node, and one or more intermediate nodes, and wherein each node in the plurality of nodes comprises at least one ingress interface and at least one egress interface, the method comprising: for the destination node, defining a default branching and a detour branching, each of which specifies a route from each node other than the destination node to the destination node; and performing the following at each node operating as an intermediate node for a packet flow being sent from the source node to the destination node, wherein each intermediate node in said plurality of nodes is a two-edge connected node in which the default branching and the detour branching do not share a common ingress interface, and wherein each two-edge connected node is connected to at least two adjacent nodes via a plurality of communication links: