Patent ID: 9054974
Filing Date: 2015-06-09
Classification: H04L

Abstract:
1. A method, comprising: duplicating, by a first packet switching device, an original packet stream into a first packet stream and a second packet stream; sending packets of the first packet stream over a first path, divergent from a second path, from the first packet switching device to a second packet switching device, while sending packets of the second packet stream over the second path from the first packet switching device to the second packet switching device; and communicating, from an ingress line card of the second packet switching device to a particular egress line card of the second packet switching device, packets of the first packet stream, while dropping, by an ingress line card of the second packet switching device, packets of the second packet stream; wherein the first path corresponds to a first Multiprotocol Label Switching (MPLS) tunnel with each particular packet of the first packet stream including a same first MPLS label, corresponding to the first MPLS tunnel, in the label stack of the particular packet of the first packet stream; and wherein the second path corresponds to a second MPLS tunnel, different than the first MPLS tunnel, with each particular packet of the second packet stream including a same second MPLS label, corresponding to the second MPLS tunnel, in the label stack of the particular packet of the second packet stream.