Loop detection and avoidance for segment routed traffic engineered paths

A method is described and in one embodiment includes receiving a packet of a traffic flow at an ingress node of a communications network; routing the packet to an egress node of the communications network via a first path comprising a tunnel if the packet was received from a node external to the com...

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Bibliographic Details
Main Authors Filsfils, Clarence, Sivabalan, Muthurajah, Saad, Tarek
Format Patent
LanguageEnglish
Published 15.01.2019
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:A method is described and in one embodiment includes receiving a packet of a traffic flow at an ingress node of a communications network; routing the packet to an egress node of the communications network via a first path comprising a tunnel if the packet was received from a node external to the communications network; and routing the packet to the egress node of the communications network via a second path that does not traverse the tunnel if the packet was received from a node internal to the communications network. The first path is identified by a first Forwarding Information Base ("FIB") entry corresponding to the flow and the second path is identified by a second FIB entry corresponding to the flow.
Bibliography:Application Number: US201615227721