Patent ID: 9124524
Filing Date: 2015-09-01
Classification: H04L

Abstract:
1. A priority based flow control method in a network node, comprising: receiving a packet on an internal ingress port of said network node; identifying a packet priority of said received packet, wherein said identifying comprises identifying a packet priority using a differentiated services code point field in said received packet; selecting a forwarding tree to apply to said received packet from a set of forwarding trees that includes a spanning tree and a shortest path first tree, wherein said selection is based on said identified packet priority, said spanning tree identifying a first set of other network nodes for further forwarding processing of said received packet, and said shortest path first tree identifying a second set of other network nodes for further forwarding processing of said received packet; and forwarding said received packet to a set of internal egress ports for transmission to one of said first set and second set of other network nodes for further forwarding processing of said received packet, said set of internal egress ports determined based on said selected forwarding tree.